Multiple Choice QuestionsTube feet is the locomotory organ in
starfish
jelly fish
silver fish
Scoliodon
A.
starfish
Tube feet are extensible tubular processes bearing suckers and present in rows on the under surface of Echinoderms. These are connected internally with water vascular system. Each tube foot has an ampulla, a podium and a sucker. These are sensory structures that take part in adhesion, locomotion, respiration and food capturing.
Jelly fish is a member of Phylum- Coelenterata. Scoiliodon is a fish and silver fish is an arthropod.
Which of the following cell type is capable of giving rise to other cell types in sponges?
Thesocytes
Pinacocytes
Cnidocytes
Archaeocytes
Animals having a built in thermostat to maintain constant body temperature are known as
biothermic
poikilothermic
oligothermic
homeothermic
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