Evolution by Natural Selection

Q.

Flippers of penguins and dolphins are examples of?

1. Industrial melanism

2. Natural selection

3. Adaptive radiation

4. Convergent evolution

Q.

What is the difference between biological and cultural evolution?

Q.

What do you understand by natural selection? Give examples.

Q.

What are the 5 requirements for evolution to occur?

Q. In a species, the weight of a newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 or 4.5 to 5 kg die. Which type of selection process is taking place?

1. Cyclical selection
2. Directional selection
3. Stabilising selection
4. Disruptive selection

Q. Why doesn't natural selection lead to the evolution of totally harmless parasites?

Q.

What is the difference between evolution and mutation?

Q.

Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution?
i Lower groups of organisms have a simpler body design
ii Asexual reproduction is common in lower groups
iii Asexual reproduction is common in higher groups of organisms
iv The high incidence of sexual reproduction in angiosperms and vertebrates
Choose the correct answer from the options given below:
(a) i, ii and iii (b) i, iii and iv
(c) i, ii and iv (d) ii, iii and iv

Q.

Natural selection lead to directional change , stabilization or disruption...... Can you explain this line

Q. Which of the following statements about natural selection is false?

1. Natural selection is a natural force like environmental conditions.
2. Evolution is a mechanism that drives natural selection.
3. Traits that improve an organism’s chance of surviving and reproducing tend to get passed on.
4. The effects of natural selection are visible only in populations.

Q.

What factors affect the rate of evolution?

Q. Industrial melanism as observed in peppered moth proves that :

1. Melanism is a pollution generated feature
2. The true black melanic forms arise by a recurring random mutation
3. The melanic form of the moth has no selective advantage over lighter form in industrial area
4. The lighter form of the moth has no selective advantage either in polluted industrial area or non polluted area

Q. Industrial melanism is an example of :

1. Drug resistance
2. Darkening of skin due to smoke from inddustries
3. Protective resemblance with the surroundings
4. Defensive adaptation of skin against ultraviolet radiations

Q. Which among the following are the main factors responsible for determining how the organism will reproduce?

1. Environment, body size, cell number
2. Body size, cell type, mode of nutrition
3. Organisms habitat, internal physiology, genetic makeup
4. Organism's physical development, body symmetery, taxonomic hierarchy

Q.

What factors could lead to the rise of a new species?

Q.

Industrial melanism is an example of

1. darkening of skin due to smoke from the industries

2. protective resemblance with the surrounding

3. drug resistance

4. none of the above

Q.

What are the major forces of evolution?

Q. The classical example of adaptive radiation during formation of new species is

1. All of the above
2. Giant Tortoise
3. Darwin’s finches
4. Marsupials of Australia

Q. What is responsible for change in the size of population of any particular area?

1. Predation
2. Competition
3. All of the above
4. Availability of food

Q.

What Is Industrial Melanism?

Q. Darwin’s theory of natural selection failed to explain the

1. arrival of fittest
2. survival of fittest
3. origin of species
4. competitions

Q.

Are humans still evolving?

Q.

Darwin's theory states that

1. Characters are acquired through inheritance

2. Nature selects species which can adapt

3. Affect of environment on evolution

4. Species change morphologically with nature

Q. Darwin’s theory of natural selection failed to explain the

1. arrival of fittest
2. survival of fittest
3. origin of species
4. competitions

Q.

Adaptation is a type of

1. Speciation

2. Adaptive radiation

3. Convergent evolution

4. Divergent evolution

Q. The examples of which of the following include founder and bottleneck effect.

1. Stabilizing selection
2. Disruptive selection
3. Genetic drift
4. Convergent evolution
5. Directional selection

Q.

The animals of cold countries have relatively shorter and poorly developed ears, eyes, hairs and other phenotypic characters. This is known by which law?

1. Cope’s Law

2. Dollo’s Law

3. Allen’s Law

4. Bergmann's Law

Q. Define natural selection, genetic drift.

Q.

Can humans cause natural selection?

Q.

Darwin:

1. Was the first person to realize that organisms can evolve.

2. Believed that organisms could pass on acquired changes to offspring.

3. Was eager to publish his theory so that he could get all the credit.

4. Worked out the mechanism of evolution by natural selection.