Question

Locomotory organ of Protozoa is
(a) Tentacles
(b) Reticulocytes
(c) Legs
(d) None of the above

Answer 1

Hint: Sporozoa belongs to the phylum protozoa and all the members of this class are parasites.

Complete answer:
Sporozoa is a large group of parasites and are non-photosynthetic protists.
The flagellated stage is completely absent in them. Hence they do not bear any locomotory organ.
A movement that Sporozoans show is gliding movement.
In the sexual phase-only male gametes undergo a flagellated stage of motility. But they do not have flagellated extensions for locomotion.
1. Tentacles: Tentacles of Sporozoa shows the function of grasping and feeding.
2. The Reticulocytes are immature red blood corpuscles.
3. For movement, the sporozoans do not have flagella, cilia, or pseudopodia. They are capable of gliding movements.
4. A host is infected by ingesting cysts in their body, which further divide to produce sporozoites that enter the cells of the host.
5. Sporozoans are named so because they can form spore-like cells. spores are the reproductive cells.
6. Sporozoans have a complex life cycle that involves both asexual and sexual generations.
Important pathogens of this class are malarial parasites and babesias.
So, the correct answer is ‘none of the above’.

Note: Examples of some parasites of Sporozoa: Plasmodium (P. falciparum, P. malariae, P. vivax), Toxoplasma gondii, Pneumocystis carinii, Coccidian, Babesia, Cryptosporidium (C. parvum, C. muris) , and Gregorian. Toxoplasmosis may cause miscarriages in pregnant women. She can transmit the parasite to the fetus through the placenta. This may cause blindness or mental retardedness in the child.