Jamb Biology 2020 Past Questions and Answers

Question 26:

• JAMB 2020

For growth to occur in organisms, the rate of

A. Anabolism must exceed that of catabolism
B. Catabolism must exceed that of anabolism
C. Food storage must be low
D. Food storage must be high

Question 27:

• JAMB 2020

The probability of a baby being a boy or a girl depends on the contribution of the

A. Father's sex cells
B. Father's stomatic chromosome
C. Mother's sex cell
D. Mother's X-chromosome

Question 28:

• JAMB 2020

Both recesssive and dominant characters are found

A. On different chromosome in the cell
B. At the same logus of a homologous chromosome
C. At a different loci of a homologous chromosome
D. On the same chromatid in a chromosome

Question 29:

• JAMB 2020

In a population of living things, the parameters of size, height, weight and colours are examples of

A. Continuous variation
B. Non-heritable variation
C. Discontinuous variation
D. Physiological variation

Question 30:

• JAMB 2020

Use the diagram to answer the question.
The process of water loss and intake indicated by the arrows labelled i and ii are respectively

A. Evaporation and osmosis
B. Osmosis and exhalation
C. Osmosis and diffusion
D. Urination and diffusion