Biology GK Questions Quiz-51

1001. Which of the following three R’s are regarded as environment friendly ? (1) Reduce, Rebuild, Restrict. (2) Random, Reduce, Recall. (3) Read, Register, Recall. (4) Reduce, Reuse, Recycle. Answer: 1001.(4) The 3 R’s of eco-friendly living are: Reduce, Reuse and Recycle. They all help to cut down on the amount of waste we throw away. They conserve natural resources, landfill space and energy. 1002.Phototropic movement is controlled by (1) Auxin  (2) Gibberellin (3) Cytokinin  (4) Ethylene Answer: 1002.(1) Phototropism is the growth of organisms in response to light. In plants, phototropism is a response to blue wavelengths of light and is caused by a redistribution of auxin from the illuminated side to the darker side of the shoot, resulting in quicker growth on the darker side and bending of the shoot toward the source of light. 1003. Lactogenic hormone is secreted by (1) Mammary glands (2) Placenta (3) Ovary (4) Pituitary Answer: 1003.(4) Lactogenic hormone is gonadotropic hormone which is secreted b…