The only true skin gland of the bird is

The preening of feathers by birds is done by dipping their beak in a secretory gland called

Only cutaneous gland present in bird is

Mucus glands in the skin and three chambered heart are seen in

Name the following: A skin gland which when inflamed cause acne.

State whether the following statements are true or false. If false, rewrite the correct statement by changing the bold/dark word only. Thyroid gland is known as 'Master gland of the body'.

Mammary glands are the modified glands of the skin. (True)

The ________ glands are modified glands of the skin.

True or False - if false give the correct statement. Third-degree burns affect only the outer layer of the skin

Skin of birds contains