Assertion Spongilla and Leucosolenia are structurally similar sponges
Reason In Spongilla and Leucosolenia, body is radially symmetrical.

Digestion in Leucosolenia and other sponges is

Digestion of food occurs in sponges Leucosolenia in

Assertion Sponges are less specialised ones. Reason Sponges show least power of regeneration.

Which phylum do I belong to I am a marine living animal with spiny skin, my body is radially symmetrical.

Assertion : Leucosolenia shows ascon type of canal system Reason : In Leucosolenia water passes through ostia rarr spongocoel rarr osculum

Assertion : Sponges are multicellular. Reason : Sponges have tissue level of organisation.

Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct ? (a) Penguin is homiothermic while the remaining three are poikilothermic (b) Leech is fresh water from while all others are marine (c) Spongilla has special collared cells called choanocytes, not found in the remaining three (d) All are bilaterlly symmetrical