Botany Facts

8/18/2019 Botany Facts

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BOTANY FACTS -2

Pollination in Rafflesia

By flies/mites

Dispersal of seeds in Rafflesia

By Elephant

Smallest parasite

Arceuthobium minutissimum — It lives in stem of Pinus,

Rootless plants

Balanophora, Utricularia, Ceratophylium, Woiffia

Plantless roots

plants have only roots to perform assimilation/growth/reproduction e.g. Sapria, Podostemum,

Arceuthobium, Rafflesia

also visit facts of animals

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Scindapsus (family Araceae)

First terrestrial and then becomes epiphyte

Arachis hypogea (Ground nut)

Flowering occurs outside soil and after fertilization, ovaries go into soil where fruit formation occurs. It is

called Geocarpy and is due to auxin action.

Plant with Broadest leaves

Victoria amazonica, (Amazon lily) leaf diameter 1.5 to 1.8 m

Plant with Longest leaf

Raphia vinifera (10—15 m )

http://lh5.ggpht.com/_yItZwKwfM-I/TOAwxQ27EOI/AAAAAAAAAvQ/dwudwQwEEp8/s1600-h/Victoria_amazonica-_largest_leaf%5B4%5D.jpghttp://biozoom.blogspot.com/2010/11/botany-facts-2.html


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Largest (Tallest) angiosperm

Eucalyptus regnans (114 m)

Tallest Gymnosperm

Sequoiadenron sempervirens ( = Sequoia gigantea) Douglosfir or Californian red wood tree

Largest flower

Rafflesia arnoldi ( 1 mt in dia, wt 7 kg) It is a root parasite on Tetrastigma roots

http://www.parasiticplants.siu.edu/Rafflesiaceae/RafflesiaGallery.html


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Largest flower of India

Sapria (a root parasite)

Largest inflorescence

Amorphophallus titanum (5.5 m) may be upto 12 m in Agave

Largest cotyledons

Capsella bursa pestoris (Shepherd’s purse)


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Biggest fruit

Lodoicea maldivica (Double coconut wt 6 kg)

Largest diameter of a tree

Taxodium mucronatum (100—125 ft) Cestanea (167 feet)


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Strongest wood used to keep mummies

Taxodium mucronatum (a gymnosperm)

Maximum number of chromosomes, plant

Ophioglossum reticulatum (2n = 1262)

Animal

Aulacantha (Radiolarians (2n = 1600)

Smallest Archegonium is found in

Angiosperms

Largest Archegonium is found in

Mosses

Smallest gametophyte plant

Chiamydomonas

Largest gametopilytic plant

Dasownia

Smallest pollen grain (2.5 t)

Myosotis


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Largest pollen grain (250 j.t)

Mirabilis

Biggest ovule

Cycas thourasii (7 cm in length)

Biggest sperm

Cycas

Biggest egg

Cycas

Largest seed

Lodoicea maidivica

Maximum number of chromosomes in Angiospérms

Poa litorosa 2n = 266

Smallest chromosome

An alga (0.025 rim)

Largest chromosome

Trillium govanianuin (30 jim)

Minimum number of chromosomes-Plant

Mucor, Porphyra (n = 2)


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Minimum number of chromosomes-animal

Ascaris (2n = 2)

Highest yielding cereal (grain) crop

Maize

Largest and widest cultivated crop

Rice (Oryza sativ)

Most advanced familyCompositae in dicots and gramineae in monocots

Billiards ball is made

from vegetable (Ivory) Palm (Phvtelephas microcarpa)

Lightest wood

Balsa (Ochrorna Pyramidale) sp. gr. 00444

Heaviest wood of world

Guaicum officinale ( sp. gr. I .49 wt. 93 lb/cubic feet

Heaviest wood of India

Hardwichia birata, Acacia sundra

Fire proof wood (wood without resin)

Sequoia dendron

Maximum life span of a tree

Macrozamia (10000 years), Dracaena (8000 years)

Largest spreading tree

Ficus bengulensis


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Largest leaf in diameter

Victoria arnazonica (V. regia) Amazon lily dia. (5—6 ft)

Longest leafRaphia vinifera 30—50 ft

Longest Botanic Garden of World

Royal Botanic Garden, Kew, England

Largest Botanic Garden of India

Indian Botanic Garden, Sibhpur (Howrah) Calcutta

First Plant taxonomist

Caesalpinio

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World’s largest herbarium

Royal Botanic Garden, Kew, England

Largest herbarium of India

Central National Herbarium (CNH), Howrah, WB

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