Animal Life(5th Grade > Science ) Questions and Answers
Explanation:-
Answer: Option B. -> blowholes:
B
Dolphins and whales have lungs like humans that cannot take in oxygen dissolved in water. So they come up to the surface of water to breathe in air through their blowholes. These blowholes are nothing but nostrils at the back of their head.
Explanation:-
Answer: Option A. -> 1. Carnivore; 2. Parasite:
A
1. Owls feed on small prey like insects, rats etc. So, they are carnivorous.
2. Tapeworms live inside the host's body and feed on their nutrients, harming the host in turn. Hence they are parasites.
Explanation:-
Answer: Option D. -> pufferfish:
D
Pufferfish“puff up” as a defense mechanism if they are threatened. It puffs up to a shape that is more thandoubleits original size andis covered with spines. The size and the spines scare awaypredators.
Explanation:-
Answer: Option D. -> Grass and frog:
D
The following would happen in case the population of snake increases.
∙ The population of frogs would decrease.
∙ The population of grasshopper would increase as there are no frogs to feed on them.
∙ The population of grass would decrease as there will be more grasshoppers.