Question

Read the following statement and select the option having correct statements only.
(a) Presence of body hair and mammary gland is characteristic feature of all adult mammals.
(b) Duck-billed platypus is a connecting link between reptiles and mammals.
(c) Prehensile tail is a characteristic of both new world and old world monkey.
(d) There will be no change in the body temperature of Neophron and Macaca if the surrounding temperature changes.

• A. (b) & (d)
• B. (a) & (c)
• C. (b) only
• D. (a), (b), (c), & (d)

Answer 1

The correct option is A (b) & (d)

A- Two characteristics are used to define the mammal class. They are mammary glands and body hair (or fur). Female mammals have mammary glands. The glands produce milk after the birth of offspring.

B- Egg laying mammalian like “Duck bill platipus” is the connective link between reptiles and mammals. They have both characters reptilian and mammalian. They lay egg like reptiles and have hairy skin and other characters like mammals.

C- Many New World monkeys in the family Atelidae, which includes howler monkeys, spider monkeys and woolly monkeys,have grasping tails often with a bare tactile pad. This is in contrast with their distant Old World monkey cousins who do not have prehensile tails.

So, the correct option is 'Option A'.