Biology

Movement of water across a semi-permeable membrane from a weaker solution to a stronger solution is known as?

A. transpiration B. diffusion C. active transport D. plasmolysis E.  osmosis Correct Answer: Option E - osmosis

6 years ago

Which of the following farm practices can cause loss of soil fertility?

A. Mulching B. Compost application C. Use of fertilizers D. Terracing E. intensive cropping Correct Answer: Option E - intensive…

6 years ago

In palm-wine, yeast acts as a?

A. carrier B. culturing agent C. preservative D. catalyst E. sweetening agent Correct Answer: Option D - catalyst

6 years ago

The farming practice by which an exhausted farm land is left for a number of years before cultivation is known as?

A. crop rotation B. continuous cropping C. mono-cropping D. bush fallowing E. mixed cropping Correct Answer: Option D - bush…

6 years ago

Crops grown mainly to feed animals are called?

A. forage crops B. here crops C. wood crops D. oil crops E. spices Correct Answer: Option A - forage…

6 years ago

Which of the following factors may not cause over-crowding?

A. Limited space B. Scarcity of food C. Reduced birth rate D. Lose immigration conditions E. Increased birth rate Correct…

6 years ago

Which of the following behavioural patterns describes adaptive colouration?

A. Counter shading B. Hibernation C. Aestivation D. Aggregation E. Migration Correct Answer: Option A - Counter shading

6 years ago

Bees communicate with one another to obtain information about the direction of food source through?

A. complicated set of dances B. smell C. contract notes D. observation E. sounds Correct Answer: Option A - complicated…

6 years ago

Which of the following characteristics distinguishes the soldier termite from other members of the caste?

A. Wingless, strong mandibles and large head B. Small head, small thorax and large abdomen C. Small head, Wingless, and…

6 years ago

In an inter-species competition, the less successful species usually?

A. reproduce faster B. become more active C. become dormant D. occupy more space E. become eliminated Correct Answer: Option…

6 years ago