A. prevent algal growth in culture solution B. allow root growth C. prevent breakdown of mineral elements D. prevents photosynthesis…
A. the king and queen of another colony B. some adult reproductives from the same colony C. some adult workers…
The initial volume of water poured into a bag of dry soil was 50ml and the amount that drained through…
A. Smoke B. Nitrogen C. Noise D. Sulphur dioxide Correct Answer: Option B - Nitrogen Explanation Air Pollutants Carbon Monoxide.…
A. remains unchanged B. takes tip water and burst C. absorbs a little water D. loses water and shrivels Correct…
A. they are small animals B. they can live inside the vertebrates C. some of them are unicellular D. they…
A. Grass, snake, toad, grasshopper, hawk B. Grass, grasshopper, toad, snake, hawk C. Grass, grasshopper, snake, toad, hawk. D. Grass,…
A. toad B. bird C. lizard D. rat Correct Answer: Option C - lizard Explanation Cold-blooded ness; The teeth of…
A. Stigmas are usually large and feathery B. Nectary is usually absent C. The pollen grains have rough spiny surfaces…
A. strengthening the stem B. manufacturing food C. reducing loss of water D. conducting manufactured food Correct Answer: Option A…