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CTET Prep: Science Questions - Biology - Ecology and Environment
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CTET Prep: Science Questions - Biology - Ecology and Environment
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25 Questions

1. In India, we find mangoes with different flavours, colours, fibrecontent, sugar content and even shelf-life. The large variation is an account of
2. The branch of Biology dealing with the relations and interactions between organisms and their environment
3. Which one among the following groups of items contains only biodegradable items?
4. The massive hole in the ozone layer over the Antarctica was first discovered in
5. This naturally occurring element in the rice husk makes it termite resistant?
6. Insectivorous plant generally grow in soil which is deficient in
7. On the IUCN 2009 red list, how many species are threatened with extinction and listed as such?
8. Which is of the following does not fit into a preservation ethic attitude towards the environment?
9. Sea level is expected to rise because of warmer climate due to the following
10. A study of a meadow ecosystem revealed the following tropic relationships : sweet clover — grasshoppers — toads — snakes. The primary producer (s) in the meadow is (are) …………
11. Which one of the following is not a site for in-situ method of conservation of flora?
12. Name the gas released from landfills, decaying organic matter under shallow water in marshes and bogs, flooded paddy fields, by ruminant animals & termites, and by the burning of biomass. A molecule of this gas has 21 times more global warming potential than a molecule of CO2.
13. Nutrient cycling often operates at the scale of
14. The best source of Vitamin C among the following
15. When one animal is used to suppress another, it is called this. For example, if snakes are encouraged in an area, the rodent population will be controlled. What is the term used?
16. Which hypothesis, concerning diversity on Earth, states that biodiversity and ecosystem function are not linked?
17. A lichen is actually composed of two organisms-a fungus and an algae. They depend on each other for survival. The most specific term that describes their relationship is
18. An animal that only eats other animals is called a
19. How many species are under threat in mainland France?
20. The reference to nature in Charles Darwin’s theory of evolution by natural selection was to
21. Animals and plants that live in water are called
22. The world biodiversity day is celebrated annually on
23. An organism’s “trophic” level refers to
24. The Giant Panda is the official symbol of the WWF (World Wide Fund for Nature). In which country is this animal found?
25. The green colour of plants is produced from organelles called

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