Biology Practice Question and Answer
8 Q: Kidney stones are composed of ______.
593 062cd61b9e05adc3893829344
62cd61b9e05adc3893829344- 1Magnesium Nitratefalse
- 2Calcium Bicarbonatefalse
- 3Calcium Oxalatetrue
- 4Sodium Chloridefalse
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Answer : 3. "Calcium Oxalate"
Q: Which of these diseases is contagious?
587 0603632b6e62cee435672d938
603632b6e62cee435672d938- 1Malariatrue
- 2Cancerfalse
- 3Hypertensionfalse
- 4Diabetesfalse
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Answer : 1. "Malaria"
Q: Which of the following is not correct regarding oesophagus?
586 063c7a5868731ac33279ab285
63c7a5868731ac33279ab285- 1Thicktrue
- 2Long tubefalse
- 3Passes through neckfalse
- 4Extends Posteriorlyfalse
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Answer : 1. "Thick "
Q: Which of the following is a root ?
584 0626696b0e1e2a840c333c6c4
626696b0e1e2a840c333c6c4- 1Potatofalse
- 2Onionfalse
- 3Carrottrue
- 4gingerfalse
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Answer : 3. "Carrot "
Explanation :
Yams, beets, parsnips, turnips, rutabagas, carrots, yuca, kohlrabi, onions, garlic, celery root (or celeriac), horseradish, daikon, turmeric, jicama, Jerusalem artichokes, radishes, and ginger are all considered roots. Because root vegetables grow underground, they absorb a great amount of nutrients from the soil.
Q: To what depth are photosynthetic marine plants found?
579 06110f9fc56e5e568efb2cb36
6110f9fc56e5e568efb2cb36- 120-30 mtrue
- 2180-200 mfalse
- 3980-1000 mfalse
- 41800-2000 mfalse
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Answer : 1. "20-30 m"
Q: Muscles get tired when there is shortfall of ___________.
578 062e8e704ceafbe581b6fdadb
62e8e704ceafbe581b6fdadb- 1Lactic acidfalse
- 2Na+ ionsfalse
- 3ATPtrue
- 4Sulphatesfalse
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Answer : 3. "ATP"
Q: Which of these animals have external and internal skeleton?
568 061110aa388e05669409e4dde
61110aa388e05669409e4dde- 1Cockroachfalse
- 2Earthwormfalse
- 3Frogsfalse
- 4Snaketrue
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Answer : 4. "Snake"
Q: The size of the pupil of the eye is controlled by the ______.
565 064c396e0a4dbfb486bcf64f8
64c396e0a4dbfb486bcf64f8- 1blind spotfalse
- 2retinafalse
- 3corneafalse
- 4iristrue
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Answer : 4. "iris"
Explanation :
1. The iris controls the amount of light entering the eye.
2. Iris is the colored part of the eye, which provides pigment to the eyes.
3. It is attached to the ciliary muscle, which contracts and expands to accommodate the required amount of light.