Phylum-porifera Flashcards
1
Q
Porifera common name
A
Sponges
2
Q
Which type of water porifera live?
A
Marine
3
Q
Water enter into porifera through?
A
Minute pores called ostia
4
Q
Central cavity of porifera?
A
Spongocoel
5
Q
In porifera ,Water goes out through?
A
Osculum
6
Q
Uses of water pathway?
A
Food gathering
Removal of waste
Respiratory exchange
7
Q
Collar cells are also known as
A
Choanocytes
8
Q
What are Choanocytes?
A
They line spongocoel and the canals
9
Q
Digestion in sponges is?
A
Intracellular
10
Q
Skeleton of porifera is made of?
A
Spicules or sponge fibres
11
Q
Porifera are unisexual or bisexual?
A
Bisexual(hermaphrodite)
12
Q
Sponges reproduce asexually by?
A
Fragmentation
13
Q
Sponges reproduce sexually by ?
A
Gamete formation
14
Q
Fertilization in porifera is?(external/internal)
A
Internal
15
Q
Development of porifera is(direct/indirect)
A
Indirect
