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Ecology, Organism & Its Environment MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
Quick Facts
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Ecology, Organism & Its Environment is considered one of the most asked concept.
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13 Questions around this concept.
Solve by difficulty
Father of ecology in India is:
Ecology at organismic level essentially is:
Which of the following is not the Abiotic Component of Ecology?
Match the following:
|
a) Ephemerals |
1) plants with thick tissues adapted to water storage. |
|
b) Succulents |
2) species of plant that have adaptations to survive in the environment with little liquid water. |
|
c) Xerophytes |
3) plants with short life cycles and grow in extremely water-scarce Regions |
Choose the correct matching order:
Gulf of Mannar is situated in ______?
The sequence of communities that successively change in a given area is called:
What will happen to a well-growing herbaceous plant in the forest if it is transplanted outside the forest in a park?
Path-finding by ants is by means of
Concepts Covered - 0
Ecology, Organism & Its Environment
- Ecology is a subject which studies the interactions among organisms and between the organism and its physical (abiotic) environment.
- Ecology is basically concerned with four levels of biological organisation –
- organisms,
- populations,
- communities and
- biomes.
- In this chapter we explore ecology at organismic and population levels.
- Ecology at the organismic level is essentially physiological ecology which tries to understand how different organisms are adapted to their environments in terms of not only survival but also reproduction.
- The variations in temperature together with annual variation in precipitation account for the formation of major biomes such as desert, rainforest and tundra.
- Regional and local variations within each biome lead to the formation of a wide variety of habitats.
- The key elements that lead to so much variation in the physical and chemical conditions of different habitats are:
- temperature,
- water,
- light and
- Soil
- However, physico-chemical (abiotic) components alone do not characterise the habitat of an organism completely; the habitat includes biotic components also – pathogens, parasites, predators and competitors – of the organism with which they interact constantly.
- Over a period of time, the organism had through natural selection, evolved adaptations to optimise its survival and reproduction in its habitat.
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