Plant nutrition - Jamb Biology Past Questions and Answers

Question 1:

• JAMB 2019

A plant which grows on another plant without apparent harm to the host plant is called

A. An epiphyte
B. A saprophyte
C. A parasite
D. A predator
E. A hermaphrodite

Question 2:

• JAMB 1978

Nitrifying bacteria keep the soil fertile by

A. Converting nitrate to nitrogen
B. Converting ammonium salt to nitrate
C. Converting atmospheric nitrogen to plant nitrogen
D. Converting nitrate to nitrous oxide
E. Converting atmospheric nitrogen to nitrates

Question 3:

• JAMB 1979

Bacteria inhabiting legume root nodules and which add atmospheric nitrogen to the soil are referred to as

A. Denitrifying bacteria
B. Nitrifying bacteria
C. Nitrogen fixing bacteria
D. Nitrogen freeing bacteria
E. Nitrogen putrefying bacteria

Question 4:

• JAMB 1980

A green plant growing in a compost pit is feeding

A. Holozoically
B. Parasitically
C. Saprophytically
D. Holophytically
E. In none of the above ways

Question 5:

• JAMB 1980

The tips of some rice seedlings were cut off while some were left intact. Both were covered with a container which had not only one small hole to allow light through. After twenty-four hours it was observed that

A. The cut tips was bent away from the light
B. The cut tips bent towards source of light
C. The intact tips bent away from the light
D. The intact tips bent towards the light
E. Both tips bent away from light