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Fish, which eradicates the mosquito larv...

Fish, which eradicates the mosquito larva is

A

Gambusia

B

Cuttle fish

C

Anabas

D

Rohu

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The correct Answer is:
A
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Ecological Indicators The presence of dragonflies can reveal changes in the water ecosystems more quickly than studying other animals or plants. In fact, from the nymph to the adult stage, the dragonfly has a significant, positive ecological impact. Dragonfly eggs are laid and hatched in or near water, so their lives impact both water and land ecosystems. Once hatched, dragonfly nymphs can breathe underwater which enables them to eat mosquito larvae, other aquatic insects and worms, and even small aquatic vertebrates like tadpoles and small fish and in the air. Adult dragonflies capture and eat adult mosquitoes. Community wide mosquito control programs that spray insecticides to kill adult mosquitoes also kill dragonflies. The most effective stages in the life cycle of dragonfly that eradicate mosquitoes are-

Ecological Indicators The presence of dragonflies can reveal changes in the water ecosystems more quickly than studying other animals or plants. In fact, from the nymph to the adult stage, the dragonfly has a significant, positive ecological impact. Dragonfly eggs are laid and hatched in or near water, so their lives impact both water and land ecosystems. Once hatched, dragonfly nymphs can breathe underwater which enables them to eat mosquito larvae, other aquatic insects and worms, and even small aquatic vertebrates like tadpoles and small fish and in the air. Adult dragonflies capture and eat adult mosquitoes. Community wide mosquito control programs that spray insecticides to kill adult mosquitoes also kill dragonflies. Assertion: Releasing dragonflies in areas where there is an outbreak of malarial diseases can be an environment friendly method of control. Reason: Dragon flies are dominant species and will not allow mosquitoes to reproduce

Which of the following fish is used to control the mosquito population as it feeds on the mosquito larvae ?

Fish that feeds upon mosquito larvae in ponds is

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Which type of mouthparts , mosquito larva possesses ?

AAKASH INSTITUTE-ANIMAL KINGDOM (CHORDATES) -Assignment (Section-C)
  1. Correct characteristic of class reptilia are

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  2. Which one of the following animals is correctly matched with its one c...

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  3. Sharks and dogfishes differ from skates and rays by

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  4. A common characteristic of all vertebrates without exception is

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  5. Besides Annelida and Arthropoda, metamer- ism is found in

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  6. Which of the following is common among mammals?

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  7. Pneumatic bones are found in

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  8. Fish introduced in india by foreigners is

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  9. Long hollow bones connected by passages are characteristics of

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  10. Fish, which eradicates the mosquito larva is

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  11. Which of the following is not found in birds

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  12. What is ture for mammalia:

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  13. Which of the following character is not found in all the chordates:

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  14. A post -anal tail is found in

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  15. in which of the following the notochord is present in embryonic stage

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  16. Given below are four matchings of an animal and its kind of respirator...

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  17. One of the followings is a very unique feature of the mammalian body

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  18. Animals have the innate ability to escape from predation Examples for ...

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  19. Annual migration does not occur in the case of

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  20. What is true about Nereis, scorpion, cockroach and silver fish ?

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