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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. Which of the following animals is protected in Kaziranga Sanctuary of Assam?
2. Genetic diversity in agricultural crops is threatened by
3. The removal of ginseng growing in the Great Smoky Mountain National park is an example of
4. Which type of experiment has the maximum spatial scale?
5. Wind erosion is one of the key causes of desertification and occurs when soil is left bare of vegetation. State the major cause of wind erosion in arid and semi-arid lands where this problem is most severe.
6. The reference to nature in Charles Darwin’s theory of evolution by natural selection was to
7. Name the term commonly used for a technology that renders seeds sterile after the first generation.
8. Which one among the following groups of items contains only biodegradable items?
9. The state’s and citizen’s responsibilities for environmental protection is enshrined in the Constitution of India in the following two articles
10. The term used for the conservation of ecosystems and natural habitats and the maintenance and recovery of viable populations of species in their natural surroundings is
11. The CERES Principles are
12. Which is not a theory of environmental ethics?
13. The Gir forest was declared a protected area to ensure the safety of this animal and to protect its last habitat. This forest in Gujarat is famous for
14. ………… is the least influential in determining the distribution of terrestrial biomes.
15. By 2100 AD, global temperature is expected to rise by about 2ºC and consequently, the sea level by about 50 cm from the present level. How is a rise in temperature expected to increase the level of the sea?
16. Which one among the following industries produces the most non-biodegradable wastes?
17. All of the organisms living in a particular area make up
18. The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
19. ‘Nitrosomonas’ bacteria in the root modules of leguminous plants converts nitrogen gas from air into inorganic nitrogen compounds which enrich the soil and can be readily used by plants.Multiple cropping with legumes can thus significantly reduce the need for ………. .
20. A symbiotic relationship in which both species benefit is best described as
21. 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.
22. Which hypothesis, concerning diversity on Earth, states that biodiversity and ecosystem function are not linked?
23. Bacteria and fungi act as ………… within an ecosystem.
24. All the populations of different species that occupy and are adapted to a given area, are referred to as a(n)
25. The Sun is a

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