Short Answer Type

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Why does one feel blinded for a short while after coming out of a dark room?


In a dark room, the pupil widens  but in bright light, more light enters the eye through the widened pupil. Also, rhodopsin is generated in the dark, and it gets bleached in the light. This affects the eye causing
a glare and one feels blinded.

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Explain how the rate of transpiration is affected on

i. A windy day

ii. A foggy day

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Explain the following terms:

(iv) Root pressure

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Explain the following terms:

(v) Parturition

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Explain the following terms:
(i) Natality

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Explain the following terms:

(iii)Antibiotic

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Mention any three adaptations found in plants to favour the process of photosynthesis.

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Explain the following terms:

(ii) Photolysis in photosynthesis

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Give the specific function of the following structures found in the body of
plants/animals.

(v) Eustachian tube 

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Give the specific function of the following structures found in the body of
plants/animals.

(iv) Corpus luteum

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