Phylum Porifera

What is left, when bath sponges dries up?

Gemmule formation in sponges are useful in

Power of regeneration in sponges is due to

Assertion: Sponges have body organization of “cellular level”.
Reason: There is some physiological division of labour.

Fill in the blank with the correct answer from the bracket.

The skeleton is of calcareous spicules in _____. (Hyalonema, Spongilla, Sycon)

Which of the following organism is included in the class Calcarea.

Sycon is included in the class Hexactinellida.

Which of the following class comes under phylum Porifera?

Flagellated collar cells (choanocytes) is the characteristics of

Match the following

Study the following statements.

I) Digestion in sponges is extra cellular.

II) Primary function of flame cells in flatworms is osmoregulation.

III) Clitellum is absent in unisexual annelids.

IV) Dipleurula larva is considered as the ancestor of echinoderms.

Fromthe above, the correct statements are-

Study the following statements

(I) Digestion in sponges is extra cellular

(II) Primary function of flame cells in flatworms is osmoregulation

(III) Clitellum is absent in unisexual annelids

(IV) Dipleurula larva is considered as the ancestor of echinoderms

Among the above, correct statements are

Spicules are found in:

Rhagon type of larva is found in

Ostium and osculum are surrounded by

Endoskeleton of sponge is made up of

Epidermis of a sponge is called:

Sponges have division of labour. Which cells are found in the gemmules for asexual reproduction?

In the case of Poriferans, the spongocoel is lined with flagellated cells called