FORM AND FUNCTIONS - Jamb Biology Past Questions and Answers

Question 81:

• JAMB 1979

The blood vessel which carries digested food from the small intestine to the liver is the

A. Renal vain
B. Renal artery
C. Hepatic artery
D. Hepatic portal vein
E. Coelic artery

Question 82:

• JAMB 1979

The maize grain is regarded as a fruit and not a seed because

A. It is covered by a sheath of leaves
B. The testa and fruit wall fuse after fertilization
C. It has both endosperm and cotyledon
D. It has coleorhiza and coleoptile
E. The pericarp and seed coat are separated

Question 83:

• JAMB 1979

Identical twins are produced under one of the following conditions

A. Two oval fertilized at the same time by two sperm
B. One ovum ferilized divides to give two embryos
C. One ovum fertilized, twins formed shortly before birth
D. Two ova fertilized by one sperm
E. One ovum fertilized by two sperm

Question 84:

• JAMB 1979

The one-seeded fuit in which the pericarp and the seed coat have become fused together is known as

A. Achene
B. Samara
C. Caryopsis
D. Legume
E. Drupe

Question 85:

• JAMB 1979

The major function of contractile vacuole in amoeba is

A. To secrete enzyme to digest food particles
B. To store excess food materials
C. To excrete nitrogenous waste
D. To absorb water from the surrounding
E. To collect and expel water in the cytoplasm