Jamb Biology Past Questions For Year 1994
Question 16
The process by which a red blood cell placed in distilled water absorbs water until it burst and releases its contents into the surrounding is known as
- A. osmosis
- B. plasmolysis
- C. turgidity
- D. haemolysis
Question 17
The phloem parenchyma is sometimes used for
- A. food storage
- B. supporting the stem
- C. production of the sieve tube
- D. transporting water
Question 18
The activity of ptyalin is likely to decrease with an increase in concentration of
- A. oxygen
- B. starch
- C. protein
- D. acid
Question 19
The nitrifying bacteria, Nitrosomonas, convert ammonia to
- A. nitirites
- B. nitric acid
- C. niitrates
- D. nitrous oxide
