Jamb 1993 Biology Questions
Question 26:
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 27:
The function of the structure labelled G is to
- A Carry out initial photosynthesis for the seedlings
- B Protect the young leaves from mechanical damage
- C Protect the young leaves from sun light
- D Protect the young leaves from insects pest
Question 28:
When it is cold, the blood vessels of the skin
- A Dilates to increase the amount of blood flowing
- B Constrict to reduced the amount of blood flowing to the skin
- C Dilate to reduce the amount of blood flowing to the skin
- D Constrict to increase the amount of blood flowing to the skin
Question 29:
Which path does sound entering the human ear follow?
- A Oval window → ossicles → ear drum
- B Ear drum → oval window → ossicles
- C Ear drum → ossicles → oval window
- D Ossicles → ear drum → oval window
Question 30:
What would happen to a man whose pancreas has been surgically removed?
- A The level of blood sugar would increase
- B The glycogen content of the liver would increase
- C His blood pressure would decrease
- D His weight would increase appreciably