Jamb Biology 1984 Past Questions and Answers

Question 6:

• JAMB 1984

Which of the following is INCORRECT? The prothallus of a fern

A. Is flattened heart-shaped structure
B. Is green because its cells contain chloroplasts
C. Is the dominant plant
D. Bears the sexual organ
E. Is attached to the ground by numerous rizoids

Question 7:

• JAMB 1984

Which of the following cell constituents is NOT common in both plants and animals?

A. Mitochondria
B. Chloroplast
C. Ribosomes
D. Golgi apparatus
E. Vacuoles

Question 8:

• JAMB 1984

The character-producing factors in living organisms are

A. Chromomeres
B. Alleles
C. Chromatids
D. Chromosomes
E. Genes

Question 9:

• JAMB 1984

A mixture of mercurous and mercuric nitrates is added to a food substance. A white precipitates is formed which on gentle heating turns red. The food substance is

A. Protein
B. Oil
C. Carbohydrates
D. Fat
E. Fatty acid

Question 10:

• JAMB 1984

The mammalian organ through which nourishment and oxygen diffuse into a developing embryo is called

A. Amnion
B. Chorion
C. Umbilical cord
D. Oviduct
E. Placenta