Protozoa

Question 1

What does commensualism mean?

Answer 1

One organism benefits the other is unaffected.

Question 2

What are the 2 groups of endoparasites?

Answer 2

• Protozoa.
• Helminths.

Question 3

What are the 2 groups of ectoparasites?

Answer 3

• Insects.
• Arachnids (ticks + mites).

Question 4

What are the 5 steps of the parasite pathway?

Answer 4

1. Transmission.
2. Entry.
3. Multiplication.
4. Damage.
5. Exit.

Question 5

Give 2 types of life-cycle?

Answer 5

• Direct - straight forward transmission.
• Indirect - uses a vector.

Question 6

What does transmission mean?

Answer 6

Method of moving from one organism to another.

Question 7

How are different protozoa identified?

Answer 7

Morphology - under microscope.

Question 8

How are protozoa generally transmitted?

Answer 8

• Arthropods.
• Fecal-oral.

Question 9

Give 4 methods of protozoa locomotion?

Answer 9

• Pseudopodia - cytoplasmic extentions.
• Flagellae (can form undulating membrane).
• Cilia.

Question 10

Give 2 morphological features that enables protozoa to eat?

Answer 10

• Cytostomes.
• Trypanosomes.

Question 11

What 2 methods of asexual reproduction do protozoa use?

Answer 11

• Sporogony - within oocyte.
• Binary fission.

Question 12

What are the 2 classes of protozoa?

Answer 12

• Sarcomastigophera.
• Sporozoa.

Question 13

How are protozoa controlled?

Answer 13

• Chemotherapy.
• Controlling Vector.

Question 14

What does sporogony mean?

Answer 14

Asexual formation of spores in sporozoans (sub-class of protozoa)