Extinction

Q.

Differentiate between endangered species and extinct species.

Q.

What is meant by extinct species ? Name any two extinct animals.

Q.

A species facing an extremely high risk of extinction in the immediate future is called?

1. Extinct

2. Vulnerable

3. Critically Endangered

4. Endemic

Q. Which of the following is an extinct species of animals ?​

1. tiger
2. snow leopard
3. desert cat
4. dodo

Q. The book which keeps a record of all the endangered species is known as:

1. Black Data Book
2. Blue Data Book
3. Pink Data Book
4. Red Data Book

Q. The Mesozoic era is also called as the golden age of the

1. amphibians
2. reptiles
3. mammals
4. birds

Q. is an element which is not naturally found on earth's surface but is found in asteroids, meteors and comets.

1. Gallium
2. Iridium
3. Uranium

Q.

What are the causes of desertification?

Q.

Iridium is not found naturally on the surface of Earth but is found in asteroids, meteors, and comets.

1. True

2. False

Q. When animals are no longer found on the earth, it is said that the species has become ___ .

Q.

Which of the following is an extinct species of animals ?
(a) tiger
(b) desert cat
(c) snow leopard
(d) dodo

Q.

First man who lived in the caves was called:

1. Java man

2. Neanderthal man

3. Lorises

4. Gibbons

Q.

Dodo is

1. critically endangered

2. endangered

3. extinct

4. rare

Q. Assertion (A): A sanctuary is formed for the conservation of animals only.
Reason (R): Some restricted human activities are allowed in sanctuaries.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true but R is not the correct explanation of A
3. A is true but R is false
4. A is false but R is true

Q.

Which of the following is an extinct bird?

1. Quagga

2. Komodo dragon

3. Dodo

4. Tiger

Q. Find out extinct animals from the following options

1. Asiatic Lion
2. Rafflesia flower
3. Dodo
4. Blue whale

Q.

What is deforestation? Give two reasons for it.

Q. Mention three natural sources of air pollution. [3 MARKS]

Q.

Which of the following animals has become almost extinct in India

1. Wolf

2. rhinoceros

3. hippopotamus

4. cheetah

Q. Which of these activities shown in the image has decreased the number of migratory birds to the Kolleru lake?

A: Commercial expansion of freshwater aquaculture
B: Industrial effluent dicharge into the lake
C: Communities of organisms prevailing in the same environment
D: Removal of rooted and floating weeds

1. A
2. B
3. C
4. D

Q. Statement A: Greenhouse gases trap heat and acts like a blanket.
Statement B: Greenhouse gases prevents Earth from freezing.

1. Statement A is true while statement B is false.
2. Statement A is false and Statement B is true.
3. Neither of the statements are true.
4. Both the statements are true.

Q.

What do you call a phenomenon where 'a species that used to exist, does not exist anymore'?

1. Extinction

2. Disappearance

3. Loss

4. Withdrawal

Q.

what will happen if.

A) we go on cutting trees.

B) the habitat of an animal is disturbed.

C) the top layer of soil is exposed.

Q. A regular pattern of extinction of plants and animals on the earth can be correlated with which of the following?

1. Lightning
2. Asteroid strike
3. Volcanic eruption
4. Human migration

Q.

Is a mass extinction beneficial to life?

Q. Question 23
Mention the aim of Forest (Conservation) Act.

Q. The hunter gatherers settled and learnt to cultivate plants and animals to meet the requirement of food for a larger population and other commercial needs. This lead to the _______ .

1. first wave of extinction
2. second wave of extinction
3. third wave of extinction
4. prevention of extinction

Q.

____ is an extinct variety of wild zebra from South Africa.

1. Dodo

2. Civet

3. Quagga

4. Lion-tailed macaque

Q. What does extinct mean?

1. A species having no living members
2. A species with large population
3. A species with lesser number of individuals
4. Being alive

Q. Why do animals migrate ?
Which is better - recycling or reusing ? Why