plant organization & growth

Plants!

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mariposa
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plant organization & growth

Post by mariposa » Tue Feb 21, 2006 11:03 pm

regarding plants what is incorrect?
1 the photosynthetic mesophyll is made up of an upper spongy layer and a lower palisde layer

2 the epidermis is covered by a waxy layer of cuticle that reduces water loss

3 gas exchange occurs through tiny openings in the leaf surface called stomates

4 vascular tissue is arrenged in a net pattern in dicots and parallel pattern in monocots

5 regulation of gas exchange through the leaf is the responsability of the guard cells

im between two answers but not sure about it,

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canalon
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Post by canalon » Wed Feb 22, 2006 12:17 am

Tell us which and why you hesitate, we will help then :P
Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)

mariposa
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Post by mariposa » Wed Feb 22, 2006 5:36 am

well i know for sure is not number 3 i know stomates is an structure where occurs gas exchange, and number 2 either the epidermis is covered by a cuticle to minimize water loss, and number 5 is correct the stomas has a small pore in de epidermis and is bordered by guard cells
so im between number 1 and 4 ????????

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Post by Nawal » Wed Feb 22, 2006 1:31 pm

Number 4 is correct and number 1 is incorrect because the photosynthetic mesophyll is made up of an upper palisde layer and a lower spongy layer

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