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Home Q & A Board Biology-Related Homework Help Zoology and Botany (Moderator: ehd123)
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LESHUDSON74 LESHUDSON74
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10 years ago
Plants that are naturally found in the deserts like cacti, generally have fewer stomata than plants found in other habitats.
a) why is this
b) What effect would you except this to have on their maximem rate of photosynthessis and whyy?
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10 years ago
a) It reduces transpiration such that water will not evaporate from the leaves. Other means of water conservation includes thickening of the stem, which holds maximum amounts of moisture when the plant obtains water. This characteristic allows cacti to withstand extreme temperatures, and they are able to absorb water rapidly when plentiful & use it efficiently.

b) Maximum rate of photosynthesis is slower because, gas exchange (CO2 + O2) decreases as water is reserved.
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