Biology( f.4)- stoma

2006-12-10 11:52 pm
Why the stomata usually closes in dark condition ??????
Please explain (in Chinese or English)

回答 (2)

2006-12-11 3:06 am
其實stomata入面係有o的photosynthetic pigments o係度,
如果佢見到光就會有光合作用,所以就會開口,
所以o係冇光o既情況下佢就會收番埋喇...
2006-12-11 12:08 am
stomata平時開係因為比d gas diffuse,
e.g co2 入cell for photosynthesis,
不過呢d全部都係light reaction到做
dark reaction 唔需要外來的co2.
咁stomata 開唔會促進dark reaction
但係為了乃止water lose through stomata,
佢就 close了


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