HARD
11th West Bengal Board
IMPORTANT
Earn 100

Chitinous exoskeleton is found in
(a)Sponge
(b)Hydra
(c)Leech
(d)Mosquito

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Important Questions on Classification of living organism
MEDIUM
11th West Bengal Board
IMPORTANT
Thecodont teeth are found in

HARD
11th West Bengal Board
IMPORTANT
Duck- Billed Platypus is a member of class

HARD
11th West Bengal Board
IMPORTANT

HARD
11th West Bengal Board
IMPORTANT
Coral is a cnidarian animal

HARD
11th West Bengal Board
IMPORTANT
Ventral hollow nerve cord is present in the Earthworm.

MEDIUM
11th West Bengal Board
IMPORTANT
The swim bladder is absent in shark.

HARD
11th West Bengal Board
IMPORTANT
Prototherian animals do not have a placenta.

HARD
11th West Bengal Board
IMPORTANT
Kangaroo can lay eggs
