JAMB Biology Past Questions & Answers - Page 383

1,911.

Mineral salts can be absorbed into the roots by

A.

osmosis only

B.

osmosis and diffusion

C.

diffusion and active transport

D.

imbibition only

Correct answer is C

No explanation has been provided for this answer.

1,912.

If a tall man (TT) marries a dwarf woman (gg) and they have four male children, the offspring will be? 

A.

All short

B.

Three short and one tall

C.

Two short and two tall

D.

One short and three tall

E.

All tall

Correct answer is E

In complete dominance, the dominant allele(TT) completely covers up the recessive one(gg). The recessive allele isn't expressed at all in their physical appearance.

1,913.

Which of these food chains is NOT possible in a forest? 

A.

Diatom → fly → toad → snake

B.

Fly → toad → snake→ hawk

C.

Leaves → antelope → man → lion

D.

Leaves → caterpillar → bird → lion

E.

Leaves →goat → man→ lion

Correct answer is A

Diatoms are an important source of these energy rich molecules that are food for the entire food web, from zooplankton to aquatic insects to fish to whales.

1,914.

Which of the following phyla have members with both internal and external segmentation?

A.

Platyhelminthes

B.

Nematoda

C.

Annelida

D.

Mollusca

Correct answer is C

No explanation has been provided for this answer.