1. If a cloud passes in front of the sun, Hr received by an unshaded leaf would:
ID: 236800 • Letter: 1
Question
1. If a cloud passes in front of the sun, Hr received by an unshaded leaf would: a.) increase b.) decrease
2. If a cloud passes in front of the sun, the temperature of an unshaded leaf would: a.) increase b.) decrease
3. Light colored hairs on the surface of a leaf would strongly reduce (compared to a leaf without the hairs):
amount of solar radiation received by the leaf
amount of solar radiation absorbed by the leaf
amount of solar radiation reflected by the leaf
all of the above
a.amount of solar radiation received by the leaf
b.amount of solar radiation absorbed by the leaf
c.amount of solar radiation reflected by the leaf
d.all of the above
Explanation / Answer
Answer 1) If a cloud passes in front of the sun then the hr received by unshaded leaf will decrease because the leaf will unable to get full intensity of sunlight.
Answer 2) The temperature of unshaded leaf would be decrease because, cloud will stop the ultraviolet rays.
Answer 3) All of the option are correct, as the light colored hairs on the leaf will lower down the absorption, and reflection. Because leaf without hair receive more light and also reflects more.
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