Question

Identify the incorrect statements from the following.
I. Oviparous mammals do not have mammary glands
II. The skin in mammals is dry without any glands
III. Homodont dentition is seen in mammals
IV. Pinna is a characteristic feature of mammals

• A. I, II & III
• B. II & III
• C. I & IV
• D. II & IV

Answer 1

The correct option is A I, II & III

The incorrect statements are I, II and III.
Oviparous mammals lay eggs and have mammary glands to nourish young ones. Eg: Platypus.
The skin in mammals is provided with sweat glands and sebaceous glands. The sebaceous glands secrete an oily secretion called sebum that keeps the skin moist.
Heterodont dentition means having different types of teeth. This is a feature of mammals. The different types of teeth of mammals include incisors, canines, premolars and molars.
Statement IV is correct. The presence of pinna is the characteristic feature of mammals.