Question 236:

• JAMB 1981

Which of these substance is likely to be deficient in the diet of a person having goitre?

A. Potassuim
B. Calcium
C. Iodine
D. Sodium
E. Phosphorus

Question 237:

• JAMB 1981

Growing yam tendrils climb for support. This growth response is

A. Haptotropism
B. Geotropism
C. Phototropism
D. Hydrotropism
E. Chemotropism

Question 238:

• JAMB 1981

Soil is said to be fertile if

A. It is black
B. It can supply usable nutrients to plants
C. The oxygen content is very high
D. Artificial manure is added to it
E. It is not waterlogged

Question 239:

• JAMB 1981

A plant which has a horizontal underground stem is

A. Rhizome
B. Corm
C. Creeper
D. Tuber
E. Bulb

Question 240:

• JAMB 1981

The hepatic portal vein is unique because it

A. Carries deoxygenated blood
B. Begins and ends with capillaries
C. Is the largest vein in mammals
D. Carries digested food
E. Is the shortest vein in mammals