Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Which of the following is true about preen gland? (1) Occur in birds (2) Also known as uropygial gland (3) Occur in bats (4) Help in digestionA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: B
Solution :
In birds, skin is without glands. Only cutaneous gland called uropygial gland or preen gland is present at tail base.
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