Explain how the structure of a leaf contributes to the function of photosynthesis. What will be an ideal response?
Concepts to Consider: Epidermis--transparent structure allows light to enter the inner mesophyll
layer where photosynthesis takes place. Stomata--allow gas exchange (CO2 and O2) to occur. Xylem--
transports water absorbed by roots from soil to leaf. Veins--carry sugar to all parts of plant. Bundle
sheaths and extensions--prevent collapse of leaf and give support
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Which factor has the least effect on the amount of
incoming light that strikes an area? a. latitude b. temperature c. the slope of the land that is exposed to the incoming light d. the amount of cloud cover e. season
Mycorrhizae help plants obtain water from the soil
Indicate whether the statement is true or false
Activator proteins often increase transcription through an interaction with ________.
Fill in the blank(s) with the appropriate word(s).
Organisms that can grow in habitats with low water activity by maintaining a high internal salt concentration are called ________ organisms.
Fill in the blank(s) with the appropriate word(s).