During unfavourable conditions, the sponges form
cyst
encyst
spicule
Gemmule
D.
Gemmule
Unfavourable conditions such as high temperature, dry conditions, sponges body gets divided into numerous small spore like bodies called gemmules.
In Amoeba, cysts are formed during unfavourable conditions.
Spicules are endoskeleton of sponge body.
Animals having a built in thermostat to maintain constant body temperature are known as
biothermic
poikilothermic
oligothermic
homeothermic
Which of the following cell type is capable of giving rise to other cell types in sponges?
Thesocytes
Pinacocytes
Cnidocytes
Archaeocytes