Post Utme Biology Questions
Question 246:
A plant which grows on another plant without apparent harm to the host plant is called ____________
- A A parasite
- B An epiphyte
- C A saprophyte
- D A predor
Question 247:
The petals of a flower are collectively called ____________
- A Calyx
- B Capsule
- C Carpel
- D Corolla
Question 248:
Osmosis can be defined as diffusion of ____________
- A Water molecules from an area of high concentration to an area of low concentration
- B Water molecules from a dilute solution to a concentrated solution across a permeable membrane
- C Water molecules from a concentrated solution to a dilute solution through a semi-permeable membrane
- D Water molecules from a dilute solution to a concentrated solution through a semi-permeable membrane
Question 249:
The oxygen given off during the process in the above equation is derived from ____________
- A Sunlight
- B Water
- C Carbon dioxide
- D Atmosphere
Question 250:
When testing a leaf for starch, why is it first placed in boiling water?
- A To extract the chlorophyll
- B To remove colour from the leaf
- C To dissolve the starch
- D To stop chemical reactions