Biology 11 Chapter - 9
Diversity Among Animals - 38
1.
Which one of the following is a bottom dwelling fish?
a) Rays
b) Non of these
c) Skates
d) Both of these
2.
Which vitamin is present in the oil obtained from shark liver?
a) D
b) C
c) A
d) B and c are correct
3.
Squalus acanthias is commonly called as?
a) Eagle ray
b) Hagfish
c) Raja
d) Dogfish shark
4.
Bony fishes belong to the class?
a) Cephalospidomorphi
b) Chondrichthyes
c) Osteichthyes
d) Mixini
5.
The scales of bony fishes are?
a) All of these
b) Cycloid
c) Ctenoid
d) Ganoid
6.
How many dorsal fin(in cartilagenous fishes?
a) Two
b) Three
c) Absent
d) One
7.
The caudal fin of the chondrichthyes is?
a) Heterocercal
b) Homocercal
c) Pseudocercal
d) Isocercal
8.
The endoskeleton of chondrichthyes is?
a) Entirely cartilagenous
b) Partialy bony
c) Partialy cartilagenous
d) Entirely bony
9.
The stomach of chondrichthyes is?
a) J shaped
b) V shaped
c) M shaped
d) Absent
10.
The heart of chondrichthyes is ___chambered?
a) Four
b) Five
c) Six
d) Two
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