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- Question
Damage to hearing is caused by sounds which exceed
Options- A. 70 decibels
- B. 80 decibels
- C. 100 decibels
- D. 120 decibels
- Correct Answer
- 120 decibels
ExplanationHigh frequency sound attacks the tympanic memberance and makes it defective. 120 decibels is too high a pitch to be heard and therefore it impairs the hearing ability.
- 1. In plants, exchange of gases takes place through
Options- A. Stomata
- B. Palisade tissue
- C. Spongy tissue
- D. mid rib Discuss
- 2. There are approximately how many muscles in Human body ?
Options- A. 206
- B. 310
- C. 554
- D. 700 Discuss
- 3. Cutaneous respiration occurs in
Options- A. Cockroach
- B. Salamander
- C. Crab
- D. Parrot Discuss
- 4. The enzyme that is necessary to bring about clotting of blood is
Options- A. peptidase
- B. amylase
- C. lipase
- D. thrombokinase Discuss
- 5. The leaves used as wrappers for bides are obtained from which one of the following ?
Options- A. Shikakai
- B. Rudraksha
- C. Tendu
- D. Lemon grass Discuss
- 6. Blood is
Options- A. alkaline
- B. neutral
- C. like a buffer
- D. acidic Discuss
- 7. Main function of white blood corpuscles is _______
Options- A. Transport of carbon dioxide
- B. Transport of oxygen
- C. To produce immune system of body
- D. None of these Discuss
- 8. Oath taken by medical graduates is given by
Options- A. Aristotle
- B. Theophrastus
- C. Hippocrates
- D. Darwin Discuss
- 9. Branch of agriculture concerned with the production of crops
Options- A. Agrotology
- B. Agronomy
- C. Agrostology
- D. Anthropology Discuss
- 10. Lathyrism is caused by excess consumption of.......
Options- A. Khesari Dal
- B. Mustard oil
- C. Mushrooms
- D. Polished rice Discuss
Biology problems
Search Results
Correct Answer: Stomata
Correct Answer: 700
Explanation:
Approximatey there are 700 muscles in Human body.
Correct Answer: Salamander
Correct Answer: thrombokinase
Explanation:
The clotting of blood is a chain reaction initiated by the enzyme Thrombokinase produced by the platelets. This causes Prothrombin and calcium salts in plasma to join and produce thrombin. Thrombin combines with Fibrinogen to produce Fibrin threads which entangles the corpuscles to create a clot.
Correct Answer: Tendu
Correct Answer: alkaline
Correct Answer: To produce immune system of body
Correct Answer: Hippocrates
Correct Answer: Agronomy
Correct Answer: Khesari Dal
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