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help with some questions

Plants!

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help with some questions

Postby nile_opeth » Thu May 03, 2007 12:56 am

Which of these is, at least partly, performed by cells that are no longer alive?
-stomatal opening and closing in angiosperms
-water transport in angiosperms
-pollination in gymnosperms
-structural support in gymnosperms
-transport of sugars in gymnosperms

Which is the result of double fertilization in angiosperms?
-The endosperm develops into a diploid nutrient tissue
-a triploid zygote is formed
-both a diploid embryo and triploid endosperm are formed
-two embryos develop in every seed
-the fertilized antipodals develop into the seed coat

Which most closely represents the male gametophyte of seed-bearing plants?
-ovule
-microspore mother cell
-pollen grain
-embryo sac
-fertilized egg

thanks!
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Postby Dr.Stein » Thu May 03, 2007 5:06 am

Homework? ;)
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Postby daniel.kurz » Sun May 06, 2007 2:52 am

Like Dr. Stein said "Homework?"
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