Theory of Evolution

Q. What is Molecular Phylogeny? Give example.

Q.

Variations are raw materials for evolution because they ………………………

1. accumulate more changes in successive generations

2. removes defects in the species

3. adds more genes to the existing genetic material

4. develop changes in mitochondrial DNA synthesis in the cell

Q.

Which is considered as raw materials for evolution?

1. new species

2. environmental changes

3. variations

4. DNA replication and synthesis

Q.

Question 57
Reproduction is essentially a phenomenon that is not for the survival of an individual but for the stability of a species. Justify.

Q.

Variations are raw materials for evolution because they__________

1. accumulate more changes in successive generations

2. develop changes in mitochondrial DNA synthesis in the cell

3. removes defects in the species

4. adds more genes to the existing genetic material

Q.

Evolution in nature takes place by the _________.

1. accumulation of all variations in a species

2. changes in the environment

3. accumulation of beneficial variations in species

4. change in food pattern

Q.

Which among the following plays a major role in evolution by creating variation

1. Mitotic division

2. Asexual reproduction

3. Mutation

4. Sexual reproduction

Q. What is Natural selection?

Q. Functional aspect of a species with reference to its place of occurrence is

1. Ecology
2. Ecological niche
3. Species
4. Environment

Q.

Out of wings of a bird, wings of an insect, and wings of a bat

Which two are examples of homologous organs?

Q. Analogous organs have:

1. Similar origin but different functions
2. Similar origin and same function
3. Different origin but same function
4. Different origin and different functions

Q. Differences in characteristics within a species is called ______.

1. evolution
2. adaptation
3. heredity
4. variation

Q.

Variations are raw materials for evolution because they ………………………

1. accumulate more changes in successive generations

2. adds more genes to the existing genetic material

3. removes defects in the species

4. develop changes in mitochondrial DNA synthesis in the cell

Q.

Fossil evidence in evolutionary studies explains that ________.

1. life is old and has changed over time

2. humans existed before plants

3. cells and tissues evolved from primitive organs

4. organic evolution took place before chemical evolution

Q. _______ is based on the idea that more the similarities in the DNA of the organisms, more closely they are related.

1. DNA analysis
2. Fossil analysis
3. Molecular phylogeny
4. Genetics

Q. Charles Darwin is credited with

1. The theory of natural selection
2. Charles laws
3. Galapagos island theory
4. Theory of finches

Q. Homologous organs have:

1. Similar origin but different functions
2. Similar origin and same function
3. Different origin but same function
4. Different origin and different functions

Q. The difference in characters between the organisms of same species is called .

1. variation
2. evolution
3. speciation

Q. _______ is based on the idea that more the similarities in the DNA of the organisms, more closely they are related.

1. DNA analysis
2. Fossil analysis
3. Molecular phylogeny
4. Genetics

Q. When Russell Wallace and Darwin independently proposed similar theories, Darwin had already accumulated extensive evidence with which to support his ideas.

Choose the option that indicates the error in the above-mentioned sentence.

1. Independently
2. Had
3. With which
4. His
5. No error

Q. Environmental factors can influence variation.

1. True
2. False