61. The hind limbs are modified for ________ in Aves.
62. Which of the following is present on the skin of bird
63. Endoskeleton is full A and the long bones are hollow with B in birds.
A. A = cartilage , B = air cavities
B. A = Bony , B = air cavities
C. A = Bony , B = air bladder
D. A = cartilage , B = air balloons
Answer : Option B
64. Gizzard is associated with ________ in birds
A. Reproductive system
B. Digestive system
C. circulatory system
D. skeletol system
Answer : Option B
65. The blood of Aves is
66. Which is correct for birds ?
67. Air sacs is connected to ________ in birds
68. Mammary gland are found in
69. Which one of the following mammalia live in water
70. Which mammalian have adapted to Fly ?