Jamb Biology 2002 Past Questions and Answers

Question 41:

• JAMB 2002

The structure labelled I represented the

A. Phloem
B. Xylem
C. Cortex
D. Pericycle

Question 42:

• JAMB 2002

The gland usually found in the position labelled I is the

A. Adrenal
B. Thyriod
C. Pancreatic
D. Pituitary

Question 43:

• JAMB 2002

To select and retain the desirable trait of large body size which a farmer has observed in his herd, the farmer needs to

A. Feed the animals in the herd with more food
B. Cross-breed his animals with a different herd
C. Inbreed the animals in his herd
D. Prevent disease in herd

Question 44:

• JAMB 2002

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

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

Question 45:

• JAMB 2002

If X^N is the dominant allele for normal vision and Xⁿ the recessive allele for colour blindness, a boy with the genotype YXⁿ will be

A. Have normal vision
B. Be colour-blind
C. Be totally blind
D. Be a carrier of colour blindness