1.

In a food chain, members of one trophic level are eaten by members of higher trophic level. A disease or scarcity due to drought that kills members of one trophic level, affects the population of both lower trophic level (very high number, glut) as well as higher trophic level (starvation and death). In a food web, one organism may occupy a position in more than one food chain. An organism can thus obtain its food from different sources and in turn, may be eaten up by different types of organisms.1. What will happen if deer is missing from the food chain : grass → deer → tiger?a. The population of tiger will increaseb. Tiger will start eating grassc. The population of grass decreased. Population of tiger decrease and grass increases2. The organisms of higher trophic level which feed on several types of organisms belonging to lower trophic level, constitute the __________.a. food webb. ecological pyramidc. ecosystemd. food chain3. Which of the following constitute the food chain?a. Grass, wheat and mangob. Grass, goat and humanc. Goat, cow and elephantd. Grass,fish, goat4. Following is true for food web :a. The energy available at each level gets diminishedb. Energy moves progressively through different levelsc. A and Bd. None of these5. Levels in a food chain make aa. Food webb. Trophic levelc. Food leveld. None of these

Answer»

1. d. Population of tiger decrease and grass increases

2. a. food web

3. b. Grass, goat and human

4. c. A and B

5. b. Trophic level



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