Jamb Biology Past Questions For Year 2012
Question 16
The carrying capacity of a habitat is reached when the population growth begins to
- A. increase slowly
- B. increase exponentially
- C. slow down
- D. remain steady
Question 17
The most likely first colonizers of a bare rock are
- A. mosses
- B. ferns
- C. lichen
- D. fungi
Question 18
Which of the following animals can exist solely on the water they get from food and metabolic reactions?
- A. forest arboreal dweller
- B. Desert dwellers
- C. forest-ground dweller
- D. rainforest dwellers
Question 19
The correct base pairing for DNA is
- A. adenine â thymine and guanine â cytosine
- B. adenine â guanine and thymine â cytosine
- C. adenine â cytosine and guanine â thymine
- D. adenine â adenine and cytosine â cytosine
Question 20
When a colour-blind man marries a carrier woman. What is the probability of their offspring being colour blind?
- A. 25%
- B. 50%
- C. 75%
- D. 100%
