Class Aves: General Characteristics
Class aves have number of orders
23
34
27
28
27
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Gonads are in abdominal region present next to:A. intestine
B. kidney
C. uterus
D. anus
Retina of bird’s eye is:
A. thick
B. thin
C. double layered
D. single layer
A portion that attached feather to bird is called:
A. plumage
B. ectodermis
C. epidermis
D. cuticle
Posterior caudal vertebrae are fused to form a structure called:
A. plumage
B. synsacrum
C. furcula
D. pygostyle
Eggs, laid by female and production of chicks, is called:
A. eggs
B. reproduction
C. clutch
D. pygostyle
Flight muscles are attached to sternum and clavicles and extend to the:
A. humerus
B. femur
C. ulna
D. radius
Living species of birds are:
A. 9100
B. 9000
C. 1100
D. 1800
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