Heredity and evolution Worksheet-4

Heredity and evolution Worksheet-4

 

  1. Functional unit of inheritance is expressed as:

A. Hormone      B. Regulator     C. Protein          D. Enzyme

 

  1. Which of the following statement is not true?

A. Codons are triplets of nucleotides

B. Codons are triplets of nucleosides

C. Codons are triplets of nucleic acids

D. Codons are triplets of genes

 

  1. DNA is a polymer of:

A. Nucleosides                              B. Nucleotides

C. Nucleic acids                            D. Genes

 

  1. The genotypic ratio of a monohybrid cross in F2 Generation is:

A. 3:1                  B. 1:2:1               C. 1:1                   D. 9:3:3:1

 

  1. The phenotypic ratio of a dihybrid cross in F2 Generation is:

A. 3:1                  B. 1:2:1               C. 1:1                   D. 9:3:3:1

 

  1. Which of the following statement is incorrect?

A. Protein can function as a structural element

B. Protein can function as an enzyme

C. Protein can function as a neurotransmitter

D. Protein can function as a hormone

 

  1. Fingers in humans are an example of:

A. Adaptation                                B. Specialization

C. Variation                                   D. Inheritance

 

  1. The basis of differentiating two groups of similar organisms as separate species is:

A. Inability to interbreed

B. Inability to share the same habitat

C. having same structure

D. Inability to dominate over each other

 

  1. The factor responsible for speciation is/ are:

A. Natural selection                     B. Reproductive isolation

C. Geographical barrier              D. All of the these

 

  1. Which of the following statement is incorrect?

A. Thorn of bougainvillea and tendril of cucurbita are homologous

B. Spine of cactus and thorns of bougainvillea are analogous

C. Fore limbs of reptiles and frogs are analogous

D. Wings of birds and wings of insect are homologous

 

Answer Key:

  1. C
  2. A
  3. B
  4. B
  5. D
  6. C
  7. A
  8. A
  9. D
  10. C