Tag: mosquitoes and malaria

Questions Related to mosquitoes and malaria

Mosquito larvae can be prevented to grow in ponds$/$ rice fields by inoculating them with

evs mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease water borne diseases mosquito and human health

  1. Microcystis

  2. Aphanizomenon

  3. Oscillatoria

  4. Aulosira

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Correct Option: A
Explanation:

There are different ways to prevent mosquito larvae to grow in ponds and rice fields. These can be done by not allowing the water to get stagnant. Also, it can be prevented by inoculating it with Microcystis cyanobacteria. Microcystis aeruginosa causes death of the larvae by producing neurotoxins and hepatotoxins.

Thus, the correct answer is 'Microcystis.'

Mosquito larva breathes through

evs hygiene and prevention of diseases mosquito and human health mosquitoes and malaria diseases caused by mosquitoes anaemia

  1. Spiracles

  2. Siphon

  3. Lungs

  4. Spiracles & siphon

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Correct Option: A

Mosquito breeding occurs in 

evs hygiene - a key to healthy life mosquito and human health mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

  1. Stagnant water.

  2. Sea.

  3. River.

  4. All of the above.

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Correct Option: A
Explanation:
Mosquitoes breed in stagnant, standing fresh water oftentimes found around the home. In tin cans, buckets discarded tires and other artificial containers that hold stagnant water. In untended pools, birdbaths, clogged rain gutters, and plastic wading pools that hold stagnant water.

So, the correct answer is 'Stagnant water.'.

The lifespan of housefly is upto 

biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

  1. 30 days

  2. 3 weeks

  3. 3 days

  4. All of the above

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Correct Option: B
Explanation:

Houseflies live for up to 3 weeks and are active during the warmer part of the year. An adult female deposits 50 to 100 eggs at a time and about 500 eggs over her lifetime. The eggs are deposited in rotting organic matter. They hatch after about 12 hours and the larvae, or maggots, feed on the rotting organic material. A maggot passes through three larval stages and then forms a pupa, or cocoon. The adult fly emerges from the cocoon. Houseflies typically develop from egg to adult within 10 days. 

The most common carrier of communicable diseases is

biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

  1. Ant

  2. Housefly

  3. Dragonfly

  4. Spider

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Correct Option: B
Explanation:

The diseases, which spread from one person to another person or from animal to person are called as communicable diseases. It is also termed as infectious or contagious diseases. Housefly is a major factor in contributing communicable diseases. Housefly comes in contact with waste products and eatables. When it flies from wastes to eatables, it transports bacterial agents from wastes to eatables. Due to consumption of such eatables, the persons infected with microbes of various diseases, person gets sick. 

Which of the following is the most common carrier of pathogens?

biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

  1. Bees

  2. Mosquito

  3. Housefly

  4. None of the above

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Correct Option: C
Explanation:

House flies are the vectors of several infectious agents. The pathogen may attach with flies when they sit on the waste materials. They cause typhoid, cholera, salmonellosis, dysentery, tuberculosis, anthrax, and parasitic worms carried to human food on the fly’s body parts or in its regurgitations or defecations.

Therefore, the correct answer is option C.

One of the first measures taken to control houseflies is 

biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

  1. The use of aerosols.

  2. Maintaining sanitation.

  3. Setting up fly traps.

  4. The use of insecticides.

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Correct Option: B

The life cycle of the common housefly follows which pathway?

biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

  1. Egg $\rightarrow $ Pupa $\rightarrow $ Larva $\rightarrow $ Adult fly

  2. Egg $\rightarrow $ Adult fly $\rightarrow $ Larva $\rightarrow $ Pupa

  3. Egg $\rightarrow $ Larva stage 1 $\rightarrow $ Larva stage 2 $\rightarrow $ Adult fly

  4. Egg $\rightarrow $ Larva $\rightarrow $ Pupa $\rightarrow $ Adult fly

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Correct Option: D

The housefly also acts as a ___________.

biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

  1. Nutritional source for humans

  2. Predators

  3. Scavengers

  4. All of the above

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Correct Option: C
Explanation:

House Flies are generally, found feeding and breeding on trash and rotten food where they get attached to several pathogens which is further transmitted by these flies to a healthy host.  As houseflies and their larvae feed, on dead remains of plants and animals. So, they act as a scavenger.

What sanitation measures should be taken to eliminate housefly?

biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

  1. Food should be covered properly.

  2. Garbage cans should have tight lids.

  3. Buildings should be screened.

  4. All of the above.

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Correct Option: D