Tag: evs

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

What is common in both Culex and Anopheles?

  1. Both sit obliquely while resting on a plane

  2. Both have dark spotted wings

  3. Both have three pairs of legs, last pair is held up in the air while sitting

  4. Both lay eggs in rafts
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Culex is a genus of mosquitoes which carries worms of filariasis, Japanese encephalitis, St. Louis encephalitis, and avian malaria. 
Anopheles is a genus of mosquito first described and named by J. W. Meigen in 1818. About 460 species are recognized, while over 100 can transmit human malaria. Both Culex and Anopheles have three pairs of legs, the last pair is held up in the air while sitting. 

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

Choose the correct answers from the alternatives given.
In the malarial parasite, oocyst is formed in the:

  1. erythrocytes of man

  2. liver cells of man

  3. stomach wall of the female mosquito

  4. blood of the female mosquito
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The female Anopheles mosquito, when it withdraws blood the infected malarial patient, the male and female gametes enter into the mosquito gut, when the two male and female gametes fuse together and form a zygote, which develops into ookinetes that burrow into the mosquito midgut wall to develop into oocysts.

So, the correct option is 'stomach wall of the female mosquito'.

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

Choose the correct answers from the alternatives given.
The vector of sleeping sickness is:

  1. house fly

  2. sand fly

  3. mosquito

  4. tsetse fly
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Trypanosoma brucei rhodesiense and Trypanosoma brucei gambiense are the two parasites causes sleeping sickness. Tsetse flies which acts as a carrier of the infection. 

So, the correct option is 'tsetse fly'.

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

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

  1. Microcystis

  2. Aphanizomenon

  3. Oscillatoria

  4. Aulosira
Reveal answer Fill a bubble to check yourself
A Correct answer
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.'

Multiple choice hunger and dehydration from tasting to digestion digestion of food digestion evs
Instantaneous source of energy is

  1. Proteins

  2. Fats

  3. Nucleic acids

  4. Glucose
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Glucose is a monomer that after ingestion, does not gets digested and directly gets absorbed and converted into energy. Therefore, glucose is an instantaneous source of energy.

Protein, Fats, and Nucleic acid don't get directly converted into energy. So, they are not the instantaneous source of energy. 
So, the correct option is (D).

Multiple choice hunger and dehydration from tasting to digestion digestion of food digestion evs

The best way to avoid dehydration is

  1. Drink only water

  2. Medications

  3. Have balanced diet

  4. Drink plenty of fluids
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To prevent dehydration, drink plenty of fluids and eat foods high in water such as fruits and vegetables. Letting thirst be your guide is an adequate daily guideline for most healthy people. Fluids can be obtained not just from water but also from other beverages and foods. But, if you're exercising, do not wait for thirst to keep up with your fluids. 

Multiple choice hunger and dehydration from tasting to digestion digestion of food digestion evs

Which is to be taken to prevent dehydration due to diarrhoea?

  1. Rice

  2. Vitamin pills

  3. Bread

  4. Boiled and filtered water with some salt and sugar
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In diarrhoea there is increased bowel movements because of the  reduced absorption of fluids in the intestine which leads to excessive loss of water and dehydration. It spreads through the contaminants in the water. To prevent dehydration and contamination it is advised to have boiled water with some salt and sugar.

So, the correct answer is option D.

Multiple choice hunger and dehydration from tasting to digestion digestion of food digestion evs

Seema is feeling weak and dizzy. Her father gave her magical drink and she felt energetic. What is that magical drink?

  1. Sugar solution only

  2. Salt solution only

  3. Sugar and salt solution

  4. Plain water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Dehydration happens when the body doesn't have as much water as it needs. Symptoms include increased thirst, headache, dry skin, dizziness, sleepiness, decreased urine output, dry mouth, etc. Oral rehydration therapy (ORT) is a type of fluid replacement used to prevent and treat dehydration. It involves drinking water with modest amounts of sugar and salts.
So, the answer is C.