Jamb 1983 Biology Questions
Question 31:
In a positive phototropic response of a coleoptile, the region of greatest curvature is brought about by the
- A Movement of auxins away from the region of curvature
- B Even distribution of auxins in all parts of the coleoptile
- C Inhibition of growth by auxins in the region f smaller curvature
- D Concentration of auxins in the region of curvature
- E Absence of auxins in the coleoptile
Question 32:
The tuber cassava is NOT a stem tuber because it
- A Is distended with food reserve
- B Has an aerial shoot portion
- C Has other structure that could be called root
- D Lacks axillary buds
- E Has a bark over its stored food
Question 33:
The function of the ossicles (malleus, incus and stapes) in the mammalian ear is
- A Transmission of vibrations
- B Regulation of pressure
- C Support of the inner ear
- D Maintenance of balance during motion
- E Secretion of oil
Question 34:
Which of the following instruments is used for determining turbidity of water?
- A Thermometer
- B Secchi disc
- C Rain guage
- D Hydrometer
- E Wind vane
Question 35:
Which of the following is NOT a characteristic of monocot plants?
- A Occurrence of secondary thickening
- B Parallel venation
- C Scattered vascular bundles
- D Floral parts arranged in threes
- E Perianth is usually insignificant