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Root - Plant Water Relation
Root system is directly related to the absorption of water and its growth under field conditions is very much influenced by soil. In dry land agriculture, particularly root structure has apparently greater significance. The rates of water absorption into roots of different plants differ in their stage of growth. Highest rates of water entry are associated with root hair and unsuberised roots and lowest with suberised woody root.
Give three examples of artificial selection. Include examples of both animals and plants. Answers will vary, but could include domestic cats, domestic dogs, cattle, sheep, an
Temperature - Estuaries Another important variable is temperature. The temperature of estuary keeps on fluctuating it heats up and cools down more rapidly under prevailin
How is energy transferred along a food chain? The energy flux beside a food chain is always unidirectional, from the producers to the decomposers.
Q. What are the specialized structures that help the adhesion between cells? The structures responsible for the union of the epithelial cells are called cell junctions. The mai
Select the two correct statements out of the four (a - d) given below about lac operon. 1. Glucose or galactose may bind with the repressor and inactivate it 2. In the absenc
Economic Significance - Conservation of Wildlife Certain wild species are important because of their actual or potential economic value to people. Wildlife resources provide p
Explain Hazard identification Hazard identification is "the identification of biological, chemical and physical agents capable of causing adverse health effects and which m
respiration in hydra
Q. Why is meiosis significant for the maintenance of the normal quantity of chromosomes of a species with sexual reproduction? A reduction to a half of the maximum normal quant
Explain about the terms - bursae and captacula? Paired water-filled sac located at base of each arm of a brittle star. Cilia in bursae circulate water. Its surface is significa
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