Fossils

Q. Sudden change in one or more gene, or in number or structure of chromosome is called -

1. Variation
2. Mutation
3. Evolution
4. All of above

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. By studying the fossil of an animal's ___________, the body structure of an animal can be predicted.

1. bones
2. droppings
3. teeth
4. nails

Q. Paleontology is the study of __________.

1. atmosphere
2. fossils
3. soil
4. Homo sapiens

Q. What causes speciation according to Hugo de Vries?

Q. Which of the following statements are true regarding the theories of evolution?

1. Lamarckism is in other words called the theory of inheritance of acquired characters.

2. Darwin’s theory believed that organisms undergo a variation which benefits their survival in their own habitat.

3. The theory of evolution is based on the idea that not all species are related and gradually change with time.

4. Darwin called his concept the principle of ‘use or disuse of organs’.

Q. The images given below represent which of the following evidence?

1. Morphological evidence
2. Paleontological evidence
3. Anatomical evidence

Q. The ultimate source of organic evolution is

1. Selection
2. Sexual reproduction
3. Hormonal action
4. Mutation

Q.

Which of the following is a fossil?

1. Plant leaves

2. Skull of a Dinosaur

3. Broken teeth

4. Both Skull of a Dinosaur and Broken teeth

Q.

Mutation leads to evolution and speciation.

1. True

2. False

Q.

____________ is the sudden, random and permanent change of the gene sequence of an organism.

1. Mutation

2. Mutilation

3. Variation

4. Evolution

Q. Fossil 'X' can be considered to have evolved earlier than fossil 'Y' if fossil:

1. 'Y' has vestigial structures that are homologous to functional structures in fossil 'X'.
2. 'Y' is structurally more complex than fossil 'X'.
3. 'X' is found in a lower stratum of undisturbed sedimentary rocks than fossil 'Y'.
4. 'Y' is in a better state of preservation than fossil 'X'.

Q. Name the evidence of evolution depicted in the given pictures.

1. 
2. 
3. 
4.