PrepBharat

1. The character possessed by all sponges are
a) That all are fresh water
b) All possess tissue level of organization
c) External fertilization
d) Hermaphrodite

View Answer

2. Select the total number of statements belonging to sponges:
(1) Cellular level of organization.
(2) Body is supported by endoskeleton made up of spicules or sponging fibres.
(3) Larva stage is morphologically different from adult.
(4) Pathway of water transport is helpful in gathering of food, respiratory exchange and removal of waste.
(5) Hermaphrodite organism.
(6) They show the power of regeneration.
a) 5
b) 6
c) 4
d) 3

View Answer

3. Select the fresh water sponge from the following:
a) Sycon
b) Euspongia
c) Spongilla
d) Hyalonema

View Answer

4. Another name of sycon is
a) Scypha
b) Euspongia
c) Spongilla
d) Hyalonema

View Answer

5. Match the following:
Column I        Column II
A. Sycon     –     1. Bath sponge
B. Spongilla   –   2. Scypha
C. Euspongia   –   3. Fresh water sponge
a) A–2, B–3, C–1
b) A–1, B–2, C–3
c) A–3, B–2, C–1
d) A–3, B–1, C–2

View Answer

6. Select the total number of marine sponges from the following:
Leucosolenia, Euspongia, Spongilla, Sycon, Hyalonema
a) 3
b) 4
c) 5
d) 2

View Answer

7. The primitive multicellular animals having cellular level of organization are
a) Ctenophores
b) Sponges
c) Corals
d) Crustacean

View Answer

8. Water enters through minute pores in the body wall into central cavity in sponges. These minute pores are known as
a) Osculum
b) Ostia
c) Spongocoel
d) Any of the above

View Answer

9. In sponge, the sperm and ova are produced by the same individual. Such types of organisms are called
a) Asexual
b) Unisexual
c) Hermaphrodite
d) Dioecious

View Answer

10. Canal system and choanocytes are characteristic of
a) Ctenophora
b) Coelenterates
c) Platyhelminthes
d) Porifera

View Answer