PROTOZOA AND HELMINTHS

Question 1

protozoa

Answer 1

Protist -> protozoa (heterotrophic/parasitic) -> protophyta (Autotrophic) -> Moulds (saprophytic)

Protozoa
Unicellular eukaryotes
non -photosynthetic
10-52um
Widely distributed habitats
movement -> pseudopodia, no movement, flagella and cilia

Question 2

Sexual reproduction:

Answer 2

Micronuclei decide and join at the oral groove, micronuclei disintegrate and move to the groove, micronuclei divide by mitosis and two matching pairs, separation;one type in each and pairs fuse.

Question 3

Cilliate examples

Answer 3

Mostly nonpathogenic, some form symbiotic relationships

Question 4

mastigophora (the flagellates):

Answer 4

They have 1+ flagella, movement, most species free living and mobile, inhabit fresh water, reproduce via binary fission.

Question 5

Apicomplexa

Answer 5

parasitic , unique organelle (apicoplast,plasmodium), complex life cycles- asexual and sexual.

Question 6

Plasmodium falciparum

Answer 6

malaria

Question 7

Parasitic worms

Answer 7

Macroscopic and multicellular
Not intracellular

Question 8

Roundworms

Answer 8

Elongated, round and unsegmented. Humans carry infections-ingestion of egg or lava.

Question 9

Pinworm:

Answer 9

Enterobiasis: small, thin white worm, female lays eggs, reinfection faecal-oral route.

Question 10

Platyhelminthes:

Answer 10

Flatworms:

Hermaphroditic, trematoda (flukes) and cestoda (tapeworms).

Question 11

Tapeworm:

Answer 11

Intestinal, segmented and lack a digestive system