SOIL - Jamb Biology Past Questions and Answers

Question 36:

• JAMB 1992

Soil with the finest particles is called

A. Silt
B. Clay
C. Sand
D. Gravel

Question 37:

• JAMB 1993

In H, the cotyledons are carried above the soil because

A. The epicotyl grows faster than the hypocotyl
B. The hypocotyl grows faster than the epicotyl
C. Both grow at the same rate
D. The epicotyl outgrow the radicle

Question 38:

• JAMB 1993

Which group of plants would be the first colonizers in an ecological succession changing rocks to soil?

A. Mosses
B. Ferns
C. Lichens
D. Grasses

Question 39:

• JAMB 1993

Soil fertility can be conserved and renewed by

A. Yearly monocropping
B. Crop rotation and cover crops
C. Bush burning to remove unwanted debris
D. Avoiding artificial manures

Question 40:

• JAMB 1994

The soil swallowed by the earthworm to form the worm cast is grouped up in the

A. Clitellum
B. Protomium
C. Mouth
D. Gizzard