JAMB Biology Past Questions & Answers - Page 245

1,221.

The part labelled j is called

A.

porosimeter

B.

potometer

C.

manometer

D.

auxanometer

Correct answer is C

No explanation has been provided for this answer.

1,222.

The most appropriate title for the set up is 

A.

quantitative measurement of respiration in plants and animals

B.

measurement of respiratory rates in living organisms

C.

comparison between photosynthesis and respiration

D.

comparison of respiratory rates in plants and animals

Correct answer is D

No explanation has been provided for this answer.

1,223.

starch is usually stored in the part labelled

A.

I

B.

II

C.

III

D.

IV

Correct answer is D

No explanation has been provided for this answer.

1,224.

Which of the labelled parts allows for efficient absorption of water and minerals?

A.

I

B.

II

C.

III

D.

IV

Correct answer is A

the part labelled I is called the ROOT HAIR... it is responsible for the absorption of minerals and water from the soil into the plant

1,225.

In the illustration above, the genotypes of the offsprings are

A.

1 heterozygous smooth : 2 homozygous smooth : 1 wrinkled

B.

1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled

C.

2 homozygous smooth : 2 wrinkled

D.

3 heterozygous smooth : 2 wrinkled

Correct answer is B

The diagram above refers to a PUNNETT SQUARE used in predicting the probable genotypic and phenotypic ratios of a cross. looking at the diagram, we have the ratio

SS : Ss : sS : ss and from the question, we see the genotypic composition is;

1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled