Extinction

Q. Identify the correct sequence of the process of formation of Fossil fuels.
i.Formation of pete - a spongy material
ii.Sinking to the bottom of the swamps
iii.Death of huge ferns and leaves covering the swamps
iv.High pressure turning pete to fossil fuels
v. Formation of sedimentary rock

1. iii-i-ii-v-iv
2. iii-i-ii-iv-v
3. iii-ii-i-v-iv
4. iii-ii-i-iv-v

Q. Which among the following is not an endangered species?​

1. Blue whale
2. Dodo
3. Whooping crane​
4. Rhinoceros

Q. The rate of increase in human population and the rate of species extinction are ________ .

1. directly proportional to each other
2. indirectly proportional to each other
3. independent of each other
4. inversely proportional to each other

Q.

Which among the following three are correct regarding the waves of extinction due to human migration?

$$\begin{array}{cccc}\text{S.No}& \text{Sequence}& \text{Wave of extinction}& \text{Driving force}\\ i.& 1^{st}& \text{Hunting}& \text{Food}\\ ii.& 2^{nd}& \text{Agriculture}& \text{Commercial needs and hunger}\\ iii.& 3^{rd}& \text{Harnessing of fossil fuel}& \text{Need of coal, oil and natural gas}\end{array}$$

1. (i) and (ii)

2. (ii) and (iii)

3. (i), (ii) and (iii)

4. (i) and (iii)

Q. An extinct bird of Mauritius is the

1. Bubo
2. Dodo
3. Peacock
4. Pigeon

Q.

The complete loss of all organisms belonging to a particular species is known as:

1. Extinction

2. Migration

3. Depletion

4. Conservation