BIOLOGY – Assignmentexcelac.in/Neet-Coaching/wp-content/uploads/2020/04/... · 2020-04-28 · 3. Bryophytes are also called amphibians of the plant kingdom, because 1) They play

Email: [email protected], [email protected] | Website: www.excelac.in | Contact: 9535656277, 9900836461

IIT-JEE Main & Advanced | NEET | AIIMS | JIPMER | CET | VIT | BHU | BITSAT | MAHE | COMED-K

#326, 3rd A-Cross, Opp. People’s Tree Hospital, Seshadripuram College Road, Yelahanka New Town, Bangalore-64

BIOLOGY – Assignment

Chapter : Plant Kingdom

1. Coralloid roots of Cycas has 1) Anabaena/Nostoc 2) Azotobacter 3) Mycorrhiza 4) Rhizobium

2. The event in pteridophytes which is precursor to the seed habit is

1) Production of micro and megaspores 2) Embryo developing into a multicellular well

differentiated sporophyte 3) Development of zygotes into young embryos

within the female gametophytes 4) Spores germinating into small, multicellular free

living photosynthetic thalloid prothallus

3. Bryophytes are also called amphibians of the plant kingdom, because

1) They play an important role in succession on bare rocks

2) These plants can live in soil but are dependent on water for sexual reproduction

3) They provide peat that have long been used as fuel

4) They prevent soil erosion 4. Pigments common to all algae are 1) Chlorophyll a & phycobilins 2) Chlorophyll a & carotenoids 3) Chlorophyll a & chlorophyll b 4) Chlorophyll b & carotenoids

5. In Selaginella, spores are of 1) Two types 2) Many types 3) Monotype 4) Haploid and diploid type

6. Gemmae are 1) Tiny leaf like appendages present in two rows

on a stem like structure 2) Green, multicellular, asexual buds, which

develop in small receptacles located on the thalli

3) Male sex organ, that produces biflagellated antherozoids

4) Female sex organ, which is flask shaped and produces a single egg

7. Identify the type of life cycle given below

1) Haplontic life cycle – Ulothrix 2) Diplontic life cycle – Fucus 3) Haplontic life cycle – Sargassum 4) Diplontic life cycle – Funaria

8. Agar-agar is obtained from 1) Chlorella 2) Spirogyra 3) Ulothrix 4) Gelidium 9. On germination a moss spore produces 1) Protonema 2) Leafy gametophyte 3) Sporogonium 4) Sporophyte

10. In ferns, fertilization does not involve 1) Pollen tube 2) Archegonia 3) Flagellate Antherozoids 4) Water

11. Which of the following group of organisms maximize the level of dissolved oxygen in their immediate environment?

1) Algae 2) Bryophytes 3) Pteridophytes 4) Gymnosperms and angiosperms

12. Gymnosperms differ from bryophytes and pteridophytes in

i) Having halplontic life-cycle ii) Not depending on water for fertilization iii) Microspores carried by wind iv) Not having independent gametophytes 1) (ii), (iii) and (iv) 2) (i), (ii),and (iii) 3) (iii) and (iv) 4) (i) and (iv)

2n

(n)Syngamy Gametogenesis

Meiosis

EXCEL ACADAMICS - Bangalore 2 Biology Assignment

EXCEL ACADAMICS – Bangalore. The Premier Institute for NEET/IIT-JEE/CET/AIIMS/JIPMER

13. Alginic acid is present in the cell wall of 1) Green Algae 2) Red Algae 3) Brown Algae 4) All the above

14. Cycas differs from angiosperms in having 1) Ovule 2) Fruit 3) Haploid endosperm 4) Diploid embryo

15. Which of the following is not the characterstics of gymnosperm?

1) Presence of xylem vessel 2) Non porous wood 3) Haploid endosperm 4) None of the above

16. Bryophytes are dependent on water because 1) Archegonium has to remain filled with water for

fertilization 2) Water is essential for fertilization for their

homosporous nature 3) Water is essential for their vegetative

propagation 4) The sperms can easily reach upto egg in the

archegonium

17. Match the following w.r.t. pteridophytes

Column I (Class)

Column II (Genus)

A Psilopsida (i) Selaginella B Lycopsida (ii) Psilotum C Sphenopsida (iii) Adiantum D Pteropsida (iv) Equisetum

1) A – (ii), B – (iii), C – (i), D – (iv) 2) A – (ii), B – (i), C – (iv), D – (iii) 3) A – (i), B – (ii), C – (iii), D – (iv) 4) A – (iv), B – (iii), C – (ii), D – (i)

18. Which of the following is called ‘reptiles of plant kingdom’?

1) Bryophytes 2) Pteridophytes 3) Gymnosperms 4) Algae

19. Heterocysts are present in 1) Riccia 2) Ulothrix 3) Albugo 4) Nostoc

20. Embryophytic, trachaeophytic, archegoniate phanerogams are

1) Algae 2) Gymnosperms 3) Pteridophytes 4) Bryophytes

21. Iodine is obtained from 1) Laminaria 2) Chlorella 3) Polysiphonia 4) Porphyra

22. Which one of the following classes is included under gymnosperms?

1) Lycopsida 2) Bryopsida 3) Cycadopsida 4) Pteropsida

23. Identify the algae which exhibits diplontic life cycle. 1) Spirogyra 2) Chlamydomonas 3) Fucus 4) Volvox

24. Which of the following pteridophytes is heterosporous in nature?

1) Psilotum 2) Adiantum 3) Equisetum 4) Salvinia

25. Consider the following statements regarding gymnosperms and choose the correct option.

(X) In gymnosperms, the male and female gametophytes have an independent existence

(Y) The multicellular female gametophyte is retained within the megasporangium

(Z) The gymnosperms are heterosporous Of these statements 1) (X) and (Y) are true but (Z) is false 2) (X) and (Z) are true but (Y) is false 3) (Y) and (Z) are false but (X) is true 4) (Y) and (Z) are true but (X) is false 26. Pick out wrong statement 1) Double fertilization is unique to gymnosperms

and monocotyledons 2) Sequoia, a gymnosperm, is one of the tallest

trees 3) Phaeophyceae members possess chlorophyll

a, c, carotenoids and xanthophylls 4) Moss is a gametophyte which consists of two

stages namely, protonema stage and leafy stage

27. Select the correct match from the options given below.

(A) Phaeophyceae - Mannitol (B) Rhodophyceae - Dictyota (C) Chlorophyceae - Non-motile gametes (D) Rhodophyceae - r-Phycoerythrin 1) A, B & C 2) B, C & D 3) A & C 4) A & D

28. Which of the following Pteridophytes belong to class Pteropsida?

1) Equisetum and Psilotum 2) Lycopodium and Adiantum 3) Selaginella and Pteris 4) Pteris and Adiantum

29. Prothallus is 1) Small, unicellular, free living, gametophyte 2) Small, multicellular, photosynthetic, sporophyte 3) Small, multicellular, photosynthetic,

gametophyte 4) Small, unicellular, free living, thalloid,

gametophyte



30. Consider the following statements with respect to gymnosperms and angiosperms.

A. Double fertilization is an event unique to gymnosperms.

B. Angiosperms range in size from microscopic Wolffia to tall trees of Sequoia.

C. In gymnosperms the seeds are not covered. D. In gymnosperms the male and female

gametophytes have an independent free living existence.

Of the above statements 1) A and B alone are correct 2) C alone is correct 3) B and C alone are correct 4) C and D alone are correct

31. Choose the correct order of colours with respect of pigments, chlorophyll, phycoerythrin and fucoxanthin.

1) Green, red and brown 2) Brown, green and red 3) Red, green and brown 4) Green, brown and red

32. The green algae rich in proteins used as food supplements even by space travellers is

1) Chlamydomonas 2) Volvox 3) Spirogyra 4) Chlorella

33. Which of the following is a phaeophyceae algae? 1) Gelidium 2) Polysiphonia 3) Porphyra 4) Laminaria

34. Which of the following is a character of rhodophyceae?

1) Major pigments are chlorophyll-a and chlorophyll-b.

2) Commonly called brown algae. 3) Stored food materials are mannitol and

laminarin. 4) Flagella is absent.

35. Which of these is not a character of Bryophytes? 1) The main plant body is haploid. 2) They possess multicellular sex organs. 3) They need water for sexual reproduction. 4) They possess well differentiated vascular

tissues.

36. The diagram represents the life cycle pattern of an angiosperm. Choose the correct combination of labelling numbered as A to E.

1) A–Anther, B–Ovary, C–Microspore, D–Zygote,

E–Embryo 2) A–Embryo, B–Zygote, C–Anther, D–Ovary, E–

Microspore 3) A–Ovary, B–Anther, C–Microspore, D–Zygote,

E–Embryo 4) A–Anther, B–Ovary, C–Zygote, D–Embryo, E–

Microspore

37. Classification given by George Bentham and Joseph Dalton Hooker represents which of the following system?

1) Cladistic 2) Phylogenetic 3) Natural 4) Artificial

38. Algae are mainly classified on the basis of 1) Pigments 2) Reserve food 3) Flagella 4) Cell wall composition

39. I. In Rhodophyceae, food is stored in the form of mannitol and laminarin.

II. The ovules of Gymnosperms are not enclosed by ovary wall.

III. Salvinia is heterosporous. IV. In the diplontic life-cycle, the free living

gametophyte represents the dominant phase. Of the above statements 1) II and III are correct but I and IV are wrong 2) II and IV are correct but I and III are wrong 3) III and IV are correct but I and II are wrong 4) I and II are correct but III and IV are wrong

40. Phaeophycean members vary in colour from olive green to various shades of brown depending upon amount of

1) Phycocyanin 2) Fucoxanthin 3) Chlorophyll 4) Phycoerythrin

41. Endosperm in gymnospermic seed is 1) Triploid 2) Haploid 3) Diploid 4) Polyploid

Flower Microsporangium

MegasporangiumSporophyte

Egg apparatus Male gametophyte

Male gametes

Gametophytic(2n)

Generation

Sporophytic(2n)

Generation

A

B

C

D

E



42. Natural system of classification is based on 1) Few characteristics 2) Vegetative and sexual characteristics given

equal weightage 3) Evolutionary relationships between various

organisms 4) Based on natural affinities among organisms

43. Isogamous sexual reproduction with the help of non-flagellated gametes occur in

1) Chlamydomonas 2) Volvox 3) Spirogyra 4) Polysiphonia

44. Reserve food of algae found at greater depths in ocean with little light penetration is

1) Mannitol and laminarin 2) Floridean starch 3) Starch 4) Laminarin and floridean starch

45. Identify incorrect statements 1) Pyrenoids contain protein besides starch 2) Kelps may reach a height of 100 metres 3) Vegetative cells of brown algae have a

cellulosic wall usually covered on outside by gelatinous coating of polysulphated esters

4) Red algae reproduces sexually by non-motile gametes

46. Name the plant used as packing material for trans-shipment of living material

1) Funaria 2) Marchantia 3) Sphagnum 4) Polytrichum

47. The given figure represents the examples of bryophytes. In them few structure/part are marked as A, B, C and D.

Identify the option which shows the correct labeling

of A, B, C and D. A B C D

1) Gemma cup

Archegoniophore

Sporophyte Sphagnum

2) Archegoniophore

Gemma cup

Gametophyte

Sphagnum

3) Archegonia Antheridia Gemma cup

Sphagnum

4) Antheridia Archegonia Gemma cup

Sphagnum

48. The dominant phase/main plant body of pteridophyte 1) Is differentiated into true root, stem and leaves 2) Possess vascular tissue 3) Bear sex organs 4) All of the above

49. Which aquatic fern performs nitrogen fixation? 1) Azolla 2) Nostoc 3) Salvia 4) Salvinia

50. Double fertilization is an unique event to 1) Naked seeded plants 2) Vascular cryptogams 3) Non-embryophytes 4) Flowering plants 51. In class phaeophyceae, the plant body is usually

attached to the substratum by a A and has a stalk, the B and leaf like photosynthetic organ-the C .

1) A – holdfast, B – stipe, C – frond 2) A – stipe, B – holdfast, C – frond 3) A – frond, B – stipe, C – holdfast 4) A – stipe, B – frond, C – holdfast

52. Haploid plant body produces gametes by 1) Mitosis 2) Meiosis 3) Both mitosis and meiosis 4) Usually mitosis but sometimes meiosis

53. Select the mismatch pair 1) Amphibians of plant kingdom – Bryophytes 2) First terrestrial plants to posses vascular

tissues – Gymnosperms 3) Water required for fertilization – Pteridophytes 4) Seeds enclosed in fruits – Angiosperms

54. During the life cycle of any sexually reproducing plant, there is alternation of generation between gamete producing and spore producing

1) A – Haploid gametophyte, B – Diploid sporophyte 2) A – Diploid sporophyte, B – Haploid gametophyte 3) A – Haploid sporophyte, B – Diploid gametophyte 4) A – Diploid gametophyte B – Haploid sporophyte,

55. Identify A, B, C and D in the given diagram.

A B C D 1) Strobilus Node Branch Rhizome 2) Cone Node Root Rhizome 3) Sporophyte Internode Branch Root 4) Sporocarp Internode Leaf Root 56. Carrageen is obtained from a member of 1) Chlorophyceae 2) Dinophyceae 3) Rhodophyceae 4) Phaeophyceae

A

B

D

C A

B

C

D



57. Ovules are not enclosed by any ovary wall and remain exposed, both before and after fertilization in

1) Monocots 2) Dicots 3) Gymnosperms 4) More than one option is correct

58. Mark the correct statement w.r.t. protonema stage 1) Haploid and found in mosses 2) Haploid and found in ferns 3) Diploid and found in Selaginella 4) Diploid and found in liverworts

59. Bryophytes differ from pteridophytes in the absence of

1) Multicellular archegonia 2) Vascular tissues 3) Motile antherozoids 4) Alternation of generations

60. If the organisms are classified on the basis of microscopic observation and biochemical evidences, it is called

1) Alpha taxonomy 2) Beta taxonomy 3) Omega taxonomy 4) Chemotaxonomy

61. Evolutionarily first terrestrial plants with vascular tissues are

1) Liverworts 2) Hornworts 3) Pteridophytes 4) Mosses

62. Select a correct statement 1) Selaginella is heterosporous with seed

producing habit 2) Multicelled female gametophyte remain inside

sporangium in all pteridophytes 3) The sporophyte in mosses is more elaborate

than that in liverworts 4) Selaginella and Ferns have cones/strobili

63. Find the odd one out w.r.t. dominant phase in life cycle

1) Angiosperms 2) Gymnosperms 3) Pteridophytes 4) Bryophytes

64. Peat is obtained from 1) Funaria 2) Sphagnum 3) Cycas 4) Ginkgo

65. Tallest gymnospermic tree is 1) Pinus 2) Cycas 3) Sequoia 4) Cedrus

66. Select odd one w.r.t. dicots 1) Pentamerous or tetramerous flowers 2) Tap root system 3) Adventitious root and trimerous flower 4) Reticulate venation

67. Majority of red algae are 1) Marine 2) Unicellular and fresh water forms 3) Heterotrophic 4) Saprophytic

68. Cell wall in green algae is usually made up of an inner layer of ____ and an outer layer of _____.

1) Cellulose, Pectose 2) Pectose, Cellulose 3) Cellulose, Algin 4) Pectin and poly sulphated esters, Cellulose

69. Examine the figure (A – D) given below and select the right option out of (1 – 4)

A.

B.

C.

D.

1) A – Laminaria, B – Polysiphonia, C – Chara, D – Fucus 2) A – Fucus, B – Chara, C – Laminaria, D – Dictyota 3) A – Polysiphonia, B – Chara, C – Laminaria, D – Dictyota 4) A – Chara B – Laminaria, C – Dictyota D – Fucus

70. Identify the correct match w.r.t. Brown algae Pigments Reserve food 1) Chl. a & b – Starch 2) Chl. a & c – Mannitol and laminarin 3) Chl. a & d – Mannitol 4) Chl. a & c – Floridean starch

71. Fusion between one large, static female gamete and a smaller motile male gamete is termed as

1) Isogamous 2) Anisogamous 3) Oogamous 4) Hologamous

72. Two unequal and lateral flagellation is characateristically found in the members of

1) Chlorophyceae 2) Phaeophyceae 3) Rhodophyceae 4) Phaeophyceae and Rhodophyceae

Air bladder

FrondMidrib

Holdfast

Branches

Axile

Holdfast

Stipe

Frond

Stipe

Frond



73. Members of chlorophyceae are usually grass green due to the dominance of pigments

1) Carotenes 2) Chlorophyll a and b 3) Phycobilins 4) Chlorophyll a and c

74. Choose the correct combination from the following options

1) Bryophyte – Ploidy of main plant body is diploid 2) Pteridophyte – Vascular bundles are present in

sporophyte 3) Gymnosperms – Homospory 4) Angiosperms – Dominant phase is

gametophyte

75. Which one is a living fossil? 1) Pinus 2) Gnetum 3) Ginkgo 4) Riccia

76. Bryophytes resemble algae in which of the following aspects?

1) Thallus like plant body, lack of vascular tissue and presence of autotrophic nutrition.

2) Filamentous body presence of vascular tissues and autotrophic nutrition.

3) Differentiation of plant body into root, stem and leaves and autotrophic nutrition.

4) Thallus like plant body, presence of roots and autotrophic nutrition

77. Which among the following pairs includes plants which are not seed producers?

1) Dryopteris and Funaria. 2) Funaria and Gnetum. 3) Nephrolepis and pinus. 4) Cycas and pinus.

78. Tracheophyta includes 1) Bryophytes only. 2) Pteridophytes only. 3) Gymnosperms and angiosperms only. 4) Pteridophytes, gymnosperms and angiosperms

79. Three features which distinguish angiosperms are 1) Naked seeds flowers, double fertilization 2) Double fertilization, covered seeds, flowers 3) Dominant gametophyte, covered seeds flowers 4) Dominant sporophytes, naked seeds, double

fertilization

80. Symbiotic association between fungal mycelium and roots of pinus is known as

1) Mycoplasma 2) Mycorrhiza. 3) Sclerotium 4) Both 2 and 3 are correct

81. During the life cycle of a sexually reproducing plant there is an alternation of generation between

1) Diploid gametophyte and haploid sporophyte 2) Gamete producing sporophyte and spore

producing gametophyte

3) Gamete producing Gametophyte and spore producing sporophyte

4) Diploid gametophyte and sporophytes

82. Reduction division (meiosis) in pteridophytes occurs

1) During gametes formation 2) During spore formation. 3) After spore formation. 4) After gamete formation

83. Zoospores are common types of spores produced during asexual reproduction in algae. They are

1) Non–flagellated, non–motile. 2) Non–flagellated, motile. 3) Flagellated, motile 4) Flagellated, non–motile

84. This product of bryophytes is used as fuel 1) Bryokenin 2) Club moss 3) Peat 4) Horn worts

85. Source of terpentine is 1) Funaria 2) Pinus 3) Mango 4) Peepal

86. Pyrenoids are the structures made of 1) Starch and store proteins 2) Proteins and store starch 3) Proteins and store lipids 4) Lipids and store starch

87. The given figure shows the life cycle of an angiosperm. Few plants are marked as A, B, C, D and E. Identify the correct labelling from the given option.

1) A–Stigma, B–Anther, C–Male gametophyte, D–

Egg, E–Female gametophyte 2) A–Stigma, B–Anther, C–Female gametophyte,

D–Egg, E–Male gametophyte 3) A–Stigma, B–Anther, C–Male gametophyte, D–

Fertilized egg, E–Female gametophyte 4) A–Stigma, B–Anther, C–Embryo sac, D–Egg,

E–Female gametophyte

BA

C

D

E

Microsporangium

Microspores

Microspore(pollen grain)

GametesZygote

Embryo

Sporophyte

FlowerOvary

Style Filament

Microsporemother cells

Megasporangium(ovule)

Megasporemother cell

SPOROPHYTIC(2n)

GENERATION

GAMETOPHYTIC(n)

GENERATION



88. Marchantia belongs to liverworts because 1) It cures liver diseases 2) It produces liver diseases 3) It is dorsiventral like liver 4) It is filamentous

89. Thick cuticle and sunken stomata are characteristically found in

1) Leaves of most pteridophytes 2) Leaves of gymnosperms

3) Stem of sunflower 4) Leaves of pteridophytes & gymnosperms

90. Choose the wrong combination in relation with gymnosperms

1) Female gametophyte – Endosperm 2) Gametophytes – Independent free living

existence 3) Megasporangium – Nucellus 4) Ovule – Integumented

ANSWER KEY 1. (1) 11. (1) 21. (1) 31. (1) 41. (2) 51. (1) 61. (3) 71. (3) 81. (3)

2. (3) 12. (1) 22. (3) 32. (4) 42. (4) 52. (1) 62. (3) 72. (2) 82. (2)

3. (2) 13. (3) 23. (3) 33. (4) 43. (3) 53. (2) 63. (4) 73. (2) 83. (3)

4. (2) 14. (3) 24. (4) 34. (4) 44. (2) 54. (1) 64. (2) 74. (2) 84. (3)

5. (1) 15. (1) 25. (4) 35. (4) 45. (3) 55. (1) 65. (3) 75. (3) 85. (2)

6. (2) 16. (2) 26. (1) 36. (1) 46. (3) 56. (3) 66. (3) 76. (1) 86. (2)

7. (2) 17. (2) 27. (4) 37. (3) 47. (2) 57. (3) 67. (1) 77. (1) 87. (3)

8. (4) 18. (2) 28. (4) 38. (1) 48. (4) 58. (1) 68. (1) 78. (4) 88. (3)

9. (1) 19. (4) 29. (3) 39. (1) 49. (1) 59. (2) 69. (2) 79. (2) 89. (2)

10. (1) 20. (2) 30. (2) 40. (2) 50. (4) 60. (4) 70. (2) 80. (2) 90. (2)

HINTS AND SOLUTIONS 1. Answer: (1) Sol. Symbiotic association. 2. Answer: (3) Sol. The female gametophytes in these plants are

retained on the parent sporophyte for variable periods.

3. Answer: (2) Sol. Antheridium produces biflagellated antherozoids

which swim in water and reach Archegonium. 4. Answer: (2) Sol. Phycobilins are found in pheophyceae and

Rhodophyceae 5. Answer: (1) Sol. It is a heterosporous plant 6. Answer: (2) Sol. Gemmae develop in gemma cups. Gemmae detach

from parent body and germinate into new plant. 7. Answer: (2) Sol. Diploid sporophytes is dominant photosynthetic

independent phase. The gametophyte is haploid single or few celled.

8. Answer: (4) Sol. Agar-agar is a solidifying agent used in the

preparation nutritive media 9. Answer: (1) Sol. In moss plant gametophyte as 2 stages i. Protonema ii. Leafy gametophyte 10. Answer: (1) Sol. Ferns are non flowering plants

11. Answer: (1) Sol. Being photosynthetic the algal members release

oxygen to immediate environment 12. Answer: (1) Sol. Gymnosperms exhibit diplontic life cycle. 13. Answer: (3) Sol. Algenic acid is a hydrocolloid used in the

transshipment of living materials 14. Answer: (3) Sol. Cycas is a gymnospermic plant. In Cycas before

fertilization the endosperm is formed it is haploid. In angiosperm after fertilization the endosperm is formed it is triploid.

15. Answer: (1) Sol. Xylem vessels are absent in Gymnosperms 16. Answer: (2) Sol. Bryophytes religious by flagellate antherozoids into

water 17. Answer: (2) Sol. Pteridophytes classified into i. Psilopsida – Psilotum ii. Lycopsida – Selaginella iii. Sphenopsida – Equisetum iv. Pteropsida – Adiantum 18. Answer: (2) Sol. Evolutionarily, they are the first terrestrial plants

possessing vascular tissues and creeping on the soil.

19. Answer: (4) Sol. Heterocysts specialized cells which fix nitrogen in

nostoc anabena



20. Answer: (2) Sol. Gymnosperms are first embryophytic, trachaeophytic,

archegoniate, flowering plants called phanerogams. 21. Answer: (1) Sol. Laminaria is a member of pheophyceae having

marine habitat 22. Answer: (3) Sol. Gymnosperms are divided into 3 classes i. Cycadopsida – Cycas ii. Coniferopsida – Pinus iii. Gnetopsida – Gnetum 23. Answer: (3) Sol. Most of the algal members shows haplontic life cycle 24. Answer: (4) Sol. Salvinia produces 2 types of spores microspore

and Megaspore 25. Answer: (4) Sol. Gymnosperms male and female gametophytes do

not have independent existence 26. Answer: (1) Sol. Gymnosperms includes medium sized/ tall trees

and shrubs 27. Answer: (4) Sol. Algal members are classified mainly based on

pigments they have and reserve food materials 28. Answer: (4) Sol. Pteris and adiantum belongs to pteropsida of

pteridophytes 29. Answer: (3) Sol. Sporangia produces haploid spores which

germinate into prothallus. 30. Answer: (2) Sol. In Gymnosperms nacked seeds without seed coat 31. Answer: (1) Sol. Characteristic pigment present in rhodophyceae

members is r – phycoerythrin 32. Answer: (4) Sol. Chlorella protein rich algal members used as food

by space travelers 33. Answer: (4) Sol. Iodine is obtained from laminaria which is a

pheophycean alga 34. Answer: (4) Sol. In chlorophyceae 2 – 8 equal flagella In phaeo phyceae 2 unequal flagella In rhodo phyceae flagella absent 35. Answer: (4) Sol. Vascular tissues are absent in Bryophytes 36. Answer: (1) Sol. Flowering plants shows Diplontic life cycle 37. Answer: (3) Sol. Natural system of classification is based on natural

affinities among the organisms. 38. Answer: (1) Sol. Chlorophyceae members are grass green in colour

due to the dominance of chlorophyll a and b 39. Answer: (1) Sol. The reserve food material in rhodophyceae

members is floridean starch 40. Answer: (2) Sol. Xanthophyll pigment, fucoxanthin present in them. 41. Answer: (2) Sol. Endosperm is a pre–fertilization structure in

gymnosperms.

42. Answer: (4) Sol. George Benthem and Adolf Hooker classification

comes under natural system of classification 43. Answer: (3) Sol. In spirogyra gametes are similar in appearance. 44. Answer: (2) Sol. Members of rhodophyceae usually occur in deep

oceans storing floridean starch very similar to amylopectin and glycogen in structure

45. Answer: (3) Sol. In brown algae cell wall has outer coating of

gelatinous algin. 46. Answer: (3) Sol. Sphagnum is a moss having capacity to hold water. 47. Answer: (2) Sol. Bryophytes and pteridophytes shows intermediate

life cycle that is haplo-diplontic life cycle 48. Answer: (4) Sol. Dominant phase, is sporophyte which is diploid and

do not possess sex organs 49. Answer: (1) Sol. Azolla fixes nitrogen which has symbiotic

association with some cyanobacteria. 50. Answer: (4) Sol. Only in angiosperms double fertilization takes place

where one ♂ gamete fuses the egg and the other one with polar nuclei.

51. Answer: (1) Sol. Plant body is thalloid attached to substratum by a

holdfast and has a stalk called stipe and leaf like photosynthetic organ called frond.

52. Answer: (1) Sol. Since plant body is haploid reduction division is not

essential. 53. Answer: (2) Sol. Pteridophytes are regarded as vascular

cryptogams 54. Answer: (1) Sol. In sporophytes in sexually reproducing plants

sporophyte is the dominant phase 55. Answer: (1) Sol. Equisetum belongs to pteridophyta plants 56. Answer: (3) Sol. Carrageen is a water holding substance having

commercial value. 57. Answer: (3) Sol. In gymnosperms there is no flowering and hence

no ovary. Ovules are exposed so regarded as Naked seeded plants.

58. Answer: (1) Sol. The predominant state in the life cycle of a moss is

the gametophyte having first stage called protonema developed from haploid spore.

59. Answer: (2) Sol. Pteridophytes are first terrestrial plants having

vascular tissues 60. Answer: (4) Sol. If the organisms are classified on the basis of

microscopic observation and bio-chemical evidences, it is called chemo taxonomy

61. Answer: (3) Sol. Pteridophytes also called as reptiles of plant kingdom



62. Answer: (3) Sol. Most of the pteridophytes are homosporous except

selaginella and salvinia 63. Answer: (4) Sol. In Bryophytes haploid gametophyte is dominant

phase in other members its diploid sporophyte. 64. Answer: (2) Sol. Peat is used as a fuel as well as packing material 65. Answer: (3) Sol. Ginkgo is regarded as living fossil belongs to

Gymnosperms 66. Answer: (3) Sol. Adventitious roots and trimerous flows are absent

in dicots 67. Answer: (1) Sol. Majority of red algae are marine 68. Answer: (1) Sol. Cell wall in green algae is usually made up of on

inner layer of cellulose and outer layer of pectose 69. Answer: (2) Sol. In algal members plant body is not differentiated

roots, stems and leaves - thalloid 70. Answer: (2) Sol. Brown algae have chlorophyll a and c, carotenoids

and xanthophyll pigment fucoxanthin. Mannitol or laminarin are complex carbohydrates stored as Reserve food.

71. Answer: (3) Sol. Fusion between one large, static female gamete

and a smaller motile male gamete is termed as oogamy or oogamous

72. Answer: (2) Sol. Phaeophyceae members can reproduce asexually

by the formation of biflagellated spores 73. Answer: (2) Sol. The size and forms of chlorophyceae where is from

unicellular, colonial to filaments 74. Answer: (2) Sol. Most widely distributed plants on biosphere are

angiosperms 75. Answer: (3) Sol. Ginkgo is a living fossil having medicinal value

76. Answer: (1) Sol. Bryophytes are regarded as amphibians of plant

kingdom 77. Answer: (1) Sol. Pryopteris is a fern and Funaria is a moss are not

seed producers. 78. Answer: (4) Sol. Plant possessing xylem and phloem. 79. Answer: (2) Sol. Double fertilisation covered seeds, flowers are 3

features which distinguish angiosperms 80. Answer: (2) Sol. Symbiotic association between fungal mycelium

and roots of pinus is known as micorrhiza 81. Answer: (3) Sol. In life cycle of sexually reproducing plants gametes

produces gametophyte and spores produces sporophytes

82. Answer: (2) Sol. Since plant body is diploid sporophyte. 83. Answer: (3) Sol. Spores and gametes produced in rhodophyceae

members are non-motile 84. Answer: (3) Sol. Peat produced from sphagnum is used as fuel 85. Answer: (2) Sol. Adaptation to reduce transpiration. 86. Answer: (2) Sol. Pyrenoids are the structures made of proteins and

store starch 87. Answer: (3) Sol. In angiosperms life cycle sporophyte is a dominant

phase 88. Answer: (3) Sol. Marchantia belongs to liverworts because its looks

like a liver 89. Answer: (2) Sol. Leaves of Gymnosperms are well adopted to with

stand extremes of temperature, humidity and wind 90. Answer: (2) Sol. In Gymnosperms ovules are not covered by ovary

wall

Documents

BIOLOGY – Assignmentexcelac.in/Neet-Coaching/wp-content/uploads/2020/04/... · 2020-04-28 · 3. Bryophytes are also called amphibians of the plant kingdom, because 1) They play