Biology questions and answers

Biology Questions and Answers

How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.

851.

In evolution, fossils are naturally preserved in

A.

rocks

B.

water

C.

chemicals

D.

trees

Correct answer is A

Some sedimentary rocks actually have fossils stored in them. Therefore, fossils are stored in rocks.

852.

The theory supports

A.

natural selection

B.

struggle for survival

C.

independent assortment

D.

the use and disuse of body parts

Correct answer is D

The theory implies that the more you use a part of your body, with time that part of your body starts adjusting in order to make the work easy.

853.

The diagram above is an illustration of one of the theories of evolution. Who proposed the theory in the illustration?

A.

Louis Pasteur

B.

Gregor Mendel

C.

Robert Hooke

D.

Jean Lamarck

Correct answer is D

This is the law of use and disuse propounded by Jean-Baptiste Lamarck.

854.

The chemical bond that holds the bases of the two strands of DNA together is

A.

oxygen bond

B.

hydrogen bond

C.

electrovalent bond

D.

covalent bond

Correct answer is B

Hydrogen bonds form between the nitrogenous bases in one strand and the nitrogenous bases in the other strand of DNA.

855.

A plant cell has 14 chromosomes prior to mitosis. What is the number of chromosomes in the daughter cells?

A.

14

B.

56

C.

28

D.

7

Correct answer is A

Mitosis is a process of cell reproduction in which one cell gives rise to two genetically identical daughter cells of the same number. Hence, the daughter cell has the same number as the parent cell prior to the process.