Jamb Biology 1981 Past Questions and Answers

Question 41:

• JAMB 1981

The correct route for a piece of bread eaten by a mammal is

A. Oral cavity - oesophagus - stomach - ileum - rectum
B. Oral - cavity - stomach - oesophagus - duodenum - ileum - rectum
C. Oral cavity - oesophagus - duodenum - rectum
D. Oral cavity - oesophagus - ileum - stomach - duodenum - rectum
E. Oral cavity - oesophagus - stomach - ileum - duodenum - rectum

Question 42:

• JAMB 1981

The thoracic vertebrae of a mammal is characterized by the

A. Vertebraterial canal
B. Prominent neural arch
C. Prominent transverse
D. Prominent neural spine
E. Prominent centrum

Question 43:

• JAMB 1981

The correct figure sequence for the following labeled parts (stigma, ovary wall, embryo sac, integument and micropyle) is

A. 12453
B. 24135
C. 21435
D. 14325
E. 31425

Question 44:

• JAMB 1981

Which of the structure becomes the seed coat after fertilization?

A. 1
B. 2
C. 3
D. 4
E. 5

Question 45:

• JAMB 1981

What would happen if solution Y is more concentrated than solution X in the figure above?

A. The level of X would rise, Y would fall
B. The level of X would rise Y would rise
C. The level of X and Y would stay the same
D. The level of Y would rise and X would fall
E. The levels of Y would fall and X would fall