541. In Vermiculture, the worm used is-

1. Tapeworm
2. Silkworm
3. Threadworm
4. Earthworm

Option “4” is correct
Vermiculture means worm growing or worm farming. When earthworms are used primarily for the production of compost, the practice is referred to as vermicomposting.
542. The gas released during the photosynthesis by the green plants is-

1. Oxygen
2. Nitrogen
3. Water vapour
4. Carbon dioxide

Option “1” is correct
Oxygen is released as a by-product in the process of photosynthesis by green plants.
543. BCG vaccine is given in-

1. Pneumonia
2. Whooping cough
3. Tetanus
4. T.B.

Option “4” is correct
The vaccine of BCG should proculate just after the birth of a baby to prevent T.B.
544. Of the following, ELISA Test is performed to test-

1. Diabetes
2. Tuberculosis
3. AIDS
4. None of these

Option “3” is correct
An ELISA test may be used to diagnose:
Hiv
Lyme Disease
Pernicious
Rotavirus
545. Which disease is caused by allergy?

1. Diabetes
2. Cholera
3. Ringworm
4. Asthma

Option “4” is correct
An allergy is a reaction by your immune system to some-thing that does not bother most other people. People who have allergies often are sensitive to more than one thing. Asthma is caused by allergy.
546. Who discovered the polio vaccine?

1. Alexander Fleming
2. Jones Salk
3. Robert Koch
4. Edward Jenner

Option “2” is correct
Polio vaccine was discovered by Jones Salk.
547. Which of the following is an egg laying mammal?

1. Bat
2. Leafy-Ant eater
3. Whale
4. Spiny Ant-eater

Option “4” is correct
Spiny ant-eater is an egg laying mammal.
548. Which one of the following is the smallest bird?

1. Peacock
2. Penguin
3. Humming bird
4. Emu

Option “3” is correct
Humming birds (Mellisuga Helenae), which live in Cuba, weigh 0.056 ounces and are 2.75 inches in length, is the smallest bird. The bill and tail account for half of this length.
549. Flat footed camels can walk easily in sandy deserts because –

1. Pressure on the sand is decreased by increasing the area of the surface in contact
2. Pressure on the sand is increased by increasing the area of the surface in contact
3. Pressure on the sand is decreased by decreasing the area of the surface in contact
4. Pressure on the sand is increased by decreasing the area of the surface in contact

Option “1” is correct
Flat footed camels can walk easily in sandy deserts because pressure on the sand is decreased by increasing the area of the surface in contact.
550. An instrument for measuring blood pressure is called –

1. Barometer
2. Spirometer
3. Sphygmomanometer
4. Haemocytometer

Option “3” is correct
Sphygmomanometer is an instrument for measuring blood pressure.
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48 thoughts on “Biology”

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