Jamb Biology 1980 Past Questions and Answers

Question 31:

• JAMB 1980

The center which controls respiratory activities the mammalian brain is the

A. Cerebrum
B. Olfactory lobe
C. Pituitary organ
D. Cerebellum
E. Medulla

Question 32:

• JAMB 1980

A student trying to find out the order in which organisms appear on a cleared plot is studying one of the following

A. Ecosystem
B. Food chain
C. Food web
D. Succession
E. Community

Question 33:

• JAMB 1980

An organism X lives entirely on the waste products in another organism Y. In this association X is a

A. Symbiont
B. Commensal
C. Saprophyte
D. Parasite
E. Epiphyte

Question 34:

• 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

Question 35:

• JAMB 1980

if three 30 cm lengths of glass tubes are tightly packed with clay, sand and loamy soils respectively and then stood in a beaker of water for one week, the level of water will be

A. Lowest in the tube with clay
B. The same in all tubes
C. Lowest in the tube with loamy soil
D. Highest in the tube with sandy soil
E. Lowest in the tube with sandy soil