Which one of the following is a filter feeder?
- (a)Catfish
- (b)Octopus
- (c)Oyster
- (d)Pelican
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Official answer(c) Oyster
Other questions on Ecosystems & Ecology Concepts
Which of the following best explain(s) the rationale for protecting mangrove ecosystems in the context of climate resilience ? 1. Mangroves reduce tidal energy and store freshwater, making them ideal sites for paddy cultivation in saline estuarine belts. 2. Their salt-sensitive roots filter seawater, making mangroves key to converting coastal land into freshwater aquaculture zones. 3. By withstanding tidal surges and offering biomass resources, mangroves function both as natural bio-shields and livelihood bases for rural communities. Select the answer using the code given below :
- (a)1 only
- (b)1 and 2
- (c)2 and 3
- (d)3 only
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Official answer(d) 3 only
Consider the following statements : 1. Lions do not have a particular breeding season. 2. Unlike most other big cats, cheetahs do not roar. 3. Unlike male lions, male leopards do not proclaim their territory by scent marking. Which of the statements given above are correct ?
- (a)1 and 2 only
- (b)2 and 3 only
- (c)1 and 3 only
- (d)1, 2 and 3
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Official answer(a) 1 and 2 only
Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree ?
- (a)Fig
- (b)Mahua
- (c)Sandalwood
- (d)Silk cotton
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Official answer(a) Fig
Consider the following : 1. Butterflies 2. Fish 3. Frogs How many of the above have poisonous species among them ?
- (a)Only one
- (b)Only two
- (c)All three
- (d)None
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Official answer(c) All three
With reference to India’s projects on connectivity, consider the following statements : 1. East-West Corridor under Golden Quadrilateral Project connects Dibrugarh and Surat. 2. Trilateral Highway connects Moreh in Manipur and Chiang Mai in Thailand via Myanmar. 3. Bangladesh-China-India-Myanmar Economic Corridor connects Varanasi in Uttar Pradesh with Kunming in China. How many of the above statements are correct?
- (a)Only one
- (b)Only two
- (c)All three
- (d)None
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Official answer(d) None
“Biorock technology” is talked about in which one of the following situations ?
- (a)Restoration of damaged coral reefs
- (b)Development of building materials using plant residues
- (c)Identification of areas for exploration/extraction of shale gas
- (d)Providing salt licks for wild animals in forests/protected areas
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Official answer(a) Restoration of damaged coral reefs