Question

26) Birds do not have
a) Urinary bladder b) Gall bladder c) Teeth d) All the above.
27) Feathers used during flight are ----
a) Quills b) Coverts c) Contours d) Fliloplumes.
28) Feathers in the birds are modification of ---
a) Dermal scales b) Plates c) Epidermal scales d) Hooks.
29) Flight muscles of birds are attached to ---
a) Coracoid b) Clavicle c) Scapulla d) Keel of sternum.
30) Air sacs are found in
a) Amphibians b) Birds c) Reptiles d) Mammals.​

Answer 1

Answer:

(a)

Explanation:

according to me all your answers are option a. all the questions have their answers in the first option that is a. hope it helps you.