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.

446.

In explaining the term camouflage, to a class, the diagram above show four varieties, P, Q, R, and S of the same species of fish living amongst water plants in a river were used.

Which of the varieties is most likely to outlive the others?

A.

P

B.

Q

C.

R

D.

S

Correct answer is B

No explanation has been provided for this answer.

447.

In explaining the term camouflage, to a class, the diagram above show four varieties, P, Q, R, and S of the same species of fish living amongst water plants in a river were used.

Which of the varieties is likely to decrease most in number if a predatory fish is introduced into the river?

A.

P

B.

Q

C.

R

D.

S

Correct answer is C

No explanation has been provided for this answer.

448.

Which of the following statements about sex-linked characters is not true?

A.

They are usually borne on the X = chromosome

B.

They are more common in males

C.

Males are usually carriers

D.

They are not usually carried on the Y chromosomes

Correct answer is C

No explanation has been provided for this answer.

449.

According to Mendel's first law of inheritance, segregation of genes occur when

A.

tall plants are crossbred

B.

short plants are crossbred

C.

tall plants and short plants are crossbred

D.

plants are crossbred

Correct answer is C

No explanation has been provided for this answer.

450.

Use the diagram above to answer this question.
 

What are the genotypes of the parents if the gene for skin colour is H?

A.

Spotted Leopard HH Black Panther hh

B.

Spotted Leopard HH Black Panther Hh

C.

Spotted Leopard Hh Black Panther Hh

D.

Spotted Leopard Hh Black Panther hh

Correct answer is A

No explanation has been provided for this answer.