Speciation

Q. Assertion (A): Speciation is a very slow process.

Reason (R): Speciation results in evolution.

1. Only A is correct.
2. Only R is correct.
3. Both A and R are correct and R is the correct explanation for A.
4. Both A and R are correct but R is not the correct explanation for A.

Q. Speciation is a fast process.

1. False
2. True

Q. Which of the following can act as a barrier to cause geographical isolation?

1. Seas, Rivers, Mountains
2. Only Mountains
3. Only industries
4. Rivers, Human Beings, Animals

Q. After the Industrial Revolution, the number of white moths decreased and black moths increased. Which of the following options explains why this happened?

1. Black moths ate the white moths
2. White moths were killed by bacterial infection
3. Black colour saved the moths from predation
4. None of the above

Q. Two islands were separated from each other due to tectonic movements over a course of time. One of the islands moved towards the north pole (cold area) and other one moved towards the equator (hot area). What will happen to the rabbits living on the two islands?

1. Different rabbit species formed after a period of time
2. Rabbits on both islands will not be able to adapt and will finally die
3. Rabbits will convert to polar bears in the island that moved north
4. No speciation will take place and they will remain as such

Q. Identify the factors which lead to speciation from the following.

1. Divergent and convergent evolution
2. Genetic drift and convergent evolution
3. Genetic drift, variation, divergent evolution and convergent evolution
4. Genetic drift, variation and divergent evolution

Q. What is speciation?

1. Formation of new species
2. All of these
3. Dominance of one species over other
4. Extinction of species

Q. Which is the key feature for the members of a species?

1. Similar size
2. Almost same genotype
3. Ability to interbreed
4. Similar appearance

Q.

Identify the factor/ factors that lead to the formation of new species from the below pictures

1. Both A and B

2. Geographic isolation

3. Reproductive isolation

4. Climatic differences

Q.

A species may be reproductively isolated through which of the following causes?

1. ecology

2. anatomy

3. behaviour

4. all of the above