A. 48 B. 46 C. 24 D. 23 Correct Answer: Option D D. 23
A. chromatids B. mutants C. alleles D. chromatin Correct Answer: Option C C. alleles
A. Height B. Shape of head C. Colour of skin D. Ability to roll the tongue Correct Answer: Option D…
A. all red flowered plants B. all white flowered plants C. red flowered, white flowered plants D. white flowered red…
A. O B. A C. B D. AB Correct Answer: Option D D. AB
A. differentiates between individuals of the same species B. qualifies an organism to live with others C. enables organisms to…
A. afforestation B. deforestation C. contour ploughing D. establishment of Game Reserves Correct Answer: Option B B. deforestation
A. Lack of oxygen → Death of aquatic organisms → Massive algal growth B. Excess nitrates and phosphates → Massive…
A. protection of wildlife B. prevention of habitat destruction C. biological control of pests D. disposal of raw sewage into…
A. building tall factory chimneys B. passing waste gases through filters and absorbers C. using lead-free petrol in car D.…