Biology 11 Chapter - 9
Diversity Among Animals - 36
1.
Which one of the following is true about agnatha?
a) Internal fertilization
b) Free swimming larvae
c) Hermaphroditic
d) External fertilization
2.
The scientific name of sea lamprey is?
a) Drosophila melanogaster
b) Rana tigrina
c) Petromayzon marinus
d) Myxine glutinosa
3.
In agnatha, the buccal funnel and toothed tongue are used for?
a) Respiration
b) Blood sucking
c) Reproduction
d) Food churning
4.
Which one of the following is not included in gnathostomata?
a) Reptilia
b) Amphibia
c) Aves
d) Mixini
5.
Chondrichthyes are called as?
a) Burrowing fishes
b) Flying fishes
c) Cartilagenous fishes
d) Bony fishes
6.
Which one of the following does not belong to chondrichthyes?
a) Lampreys
b) Skates
c) Sharks
d) Chimaeras
7.
Dogfishes belong to?
a) Osteichthyes
b) Reptilia
c) Mammalia
d) Chondrichthyes
8.
The jaws of gnathostomates are believed to have evolved from ___ of agnathans?
a) Last pair of gill arches
b) 3rd pair of gill arches
c) 1st pair of gill arches
d) 2nd pair of gill arches
9.
The scales in condrichthyes are?
a) Placoid
b) Absent
c) Non placoid
d) A and c are correct
10.
How many dorsal fin(in cartilagenous fishes?
a) Three
b) One
c) Absent
d) Two
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