Porifera (Class XI)
What is the gelatinous matrix present within a sponge called?
What are the cells which cover the inner surface of sponges called?
Which of the following classes comprises of the largest number of porifera?
What is the supporting structure in sea anemones?
Lissodendoryx is found in collaboration with
In sexual reproduction, eggs are formed by sponges by
Which of the following sentences is false?
Which of the following sponges belong(s) to class Calcarea?
What are grey cells of sponges equivalent to?
Which compound secreted by sponges has anti-viral property?
Which of the following cells of sponges exhibit totipotency?
Which of the following organisms act as endosymbionts for freshwater sponges?
Which of the following sponges exhibit the phenomenon of carnivory?
Which of the following are a prerequisite for regeneration of sponge fragment?
Which of the following animals exhibit the behaviour of sponging?
Match the following:
| Cell types | Function |
| 1. Lophocytes | a. Secrete spicules |
| 2. Rhabdiferous cells | b. Secrete polysaccharides |
| 3. Sclerocytes | c. Contraction |
| 4. Myocytes | d. Secrete collagen fibres |