ECOLOGY - Jamb Biology Past Questions and Answers

Question 116:

• JAMB 1993

In H, the cotyledons are carried above the soil because

A. The epicotyl grows faster than the hypocotyl
B. The hypocotyl grows faster than the epicotyl
C. Both grow at the same rate
D. The epicotyl outgrow the radicle

Question 117:

• JAMB 1993

What is the term used to describe the sum total of biotic and abiotic factors in the environment of the organism?

A. Habitat
B. Biome
C. Ecosystem
D. Ecological niche

Question 118:

• JAMB 1993

Important abiotic factors which affects all plants and animals in the habitat are

A. Temperature and turbidity
B. Rainfall and relative humididty
C. Salinity and wind direction
D. Temperature and rainfall

Question 119:

• JAMB 1993

Two organisms of different species, living in close association but not dependent on each other are referred to as

A. Parasites
B. Commensals
C. Symbionts
D. Autotrophs

Question 120:

• JAMB 1993

Which of the following instruments is NOT used in measuring abiotic factors in any habitat?

A. Microscopic
B. Thermometer
C. Hygrometer
D. Wind vane