Lab Exercise 10 : Protists. Station 1. Entamoeba histolytica and then trophozoites hatch out in the...

Lab Exercise 10:

Protists

Station 1. Entamoeba histolytica

and then trophozoites hatch out in the intestines and can be seen in fecal smears

Name two ways parasitic Entamoeba histolytica is different from its pond water ‘cousin’ Amoeba proteus

Cysts are ingested in contaminated water or food

Answer: It has no contractile vacuoles or food vacuoles

Station 2. Trypanosoma brucei

Station 3: Giardia lamblia

flagella

Station 4: Trichomonas vaginalis

Vaginal smear

Station 5. Paramecium caudatum

a. Method of reproduction?

Asexual or sexual?

Conditions?

b. Method of reproduction?

Asexual or sexual?

Conditions?

Answers: a. binary fission, asexual, good conditions

b. conjugation, sexual, harsh conditions

c. anterior end

c. Anterior or posterior end?

Station 6. Plasmodium life cycle

Gametocytes

Fertilization occurs

Sporogony

(10-14 days)

48 hour cycles

Schizogony

Schizogony

form

Macro and micro

zygotes

Station 7. Physarum (slime mold)

cyclosis

Station 8. Slime mold sporangia

Station 9. Dinoflagellates

Name of groove?

Answer: annulus

Station 10. Diatoms

Habitats?

Answer: round marine, elongated freshwater

Cell wall composed of?

Answer: silica (glass)

Station 11. Diatomaceous earth

Station 12. Filamentous Green algae

Spirogyrab. Haploid (n) or diploid (2n)?

a. Type of reproduction?

Asexual or sexual?

Conditions?

Answers: a. conjugation, sexual, harsh conditions

b. diploid (2n)

Station 13. Red Algae

agar

blade

Kelp

Station 14. Brown agae

algin

Wet Mount 1. Amoeba proteus

Wet Mount 2. Trichonympha from termite gut

Wet Mount 3. Paramecium caudatum

Paramecium, continued

Wet Mount 4. Euglena gracilis

A

Wet Mount 5. Volvox