MCQ Practice – Class 6 to 10

Q1. Which is the molecular basis of evolution?

A. Carbohydrates B. DNA C. Proteins D. RNA

Q2. Evolution refers to?

A. Change in one individual B. No change C. Gradual changes over generations D. Sudden changes

Q3. A sudden heritable change in DNA is called?

A. Mutation B. Fission C. Variation D. Fertilization

Q4. Who proposed mutation theory of evolution?

A. Darwin B. Hugo de Vries C. Lamarck D. Mendel

Q5. Traits controlled by dominant genes are expressed when?

A. No allele is present B. At least one dominant allele is present C. Both alleles are recessive D. Both alleles are dominant

Q6. The wings of bat and wings of bird are?

A. None B. Analogous C. Homologous D. Vestigial

Q7. Which is an example of acquired trait?

A. Height in a dwarf family B. Cut on skin C. Blood group D. Eye colour

Q8. The similarity in embryos of different species indicate?

A. Common ancestry B. Different origin C. Homology only D. No relation

Q9. Genetic drift occurs in?

A. All populations equally B. Large population C. Small population D. None

Q10. Who proposed the theory of evolution by natural selection?

A. Darwin B. Mendel C. Fleming D. Lamarck

Quiz – Heredity and Evolution