WAEC Biology Past Questions & Answers - Page 90

446.

The structures labelled II are

A.

groundnut seeds

B.

underground root nuts

C.

root Tubers

D.

root nodules

Correct answer is D

No explanation has been provided for this answer.

447.

Use the following information on capture/recapture method to calculate the total number of organisms in a habitat:
First capture = 200
Second capture = 120
Number of organisms with mark in second capture = 40

The total number of organisms therefore is

A.

200

B.

360

C.

600

D.

800

Correct answer is C

The formula for estimated population is

\(\frac{No of marked in 1st capture}{No of species} = \frac{No of marked in 2nd capture}{no of species in 2nd capture}\)

= \(\frac{200 \times 120}{40} = 600\)

448.

The part labelled I is called the

A.

nucleolus

B.

centromere

C.

centriole

D.

spindle

Correct answer is D

No explanation has been provided for this answer.

449.

The part labelled II in the diagram is

A.

centriole

B.

chloroplast

C.

chromatid

D.

tonoplast

Correct answer is C

No explanation has been provided for this answer.

450.

Mr. Andrew, his wife and child belong to blood groups A, B, and O respectively. The genotypes of both parents are

A.

IA IO and IB IB

B.

IA IA and IB IB

C.

IA IB and IA IO

D.

IA IO and IB IO

Correct answer is D

No explanation has been provided for this answer.