AP BIOLOGY

PLANTS

CLASSIFICATION OF PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Two characteristics of a mammal are ____
A
cold-blooded and live birth
B
feathers or scales covering their bodies and warm-blooded
C
fur or hair covering their bodies and cold-blooded
D
warm-blooded and make milk for their young
Explanation: 

Detailed explanation-1: -Mammals are warm-blooded animals who give birth to their younger ones. They are the most dominant form of animals found in almost all types of habitats. They have mammary glands that help them produce milk to feed their younger ones. Presence of region of the brain known as Neocortex.

Detailed explanation-2: -Mammals have the following characteristics: 1. They are covered with hair or fur. 2. They are warm-blooded (mean-ing their internal body temperature is maintained at a constant level regardless of external conditions).

Detailed explanation-3: -Mammals include humans and all other animals that are warm-blooded vertebrates (vertebrates have backbones) with hair. They feed their young with milk and have a more well-developed brain than other types of animals.

Detailed explanation-4: -Class Mammalia Mammary glands secrete milk, pair of external ears and external testes contained in a scrotum. For example, humans, cats, dogs, mice, rabbits, cows, lions, elephants, kangaroos, whales, seals, dolphins, porpoises etc.

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