Angiosperms have ____ in their phloem

a. stalk cells
b. sporophylls
c. phloem vessels
d. generative cells
e. sieve tube elements


e

Biology & Microbiology

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21. The volume enclosed by the plasma membrane of plant cells is often much larger than the corresponding volume in animal cells. The most reasonable explanation for this observation is that

a. plant cells are capable of having a much higher surface-to-volume ratio than animal cells. b. plant cells have a much more highly convoluted (folded) plasma membrane than animal cells. c. plant cells contain a large vacuole that reduces the volume of the cytoplasm. d. animal cells are more spherical, while plant cells are elongated. e. the basic functions of plant cells are very different from those of animal cells.

Biology & Microbiology

Herbivores are unable to synthesize about half of the 20 ________ that are required to make proteins

Fill in the blank(s) with correct word

Biology & Microbiology

Each epididymis is normally located ______________

Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

Fertilization produces 

A. eggs. B. zygotes. C. haploid cells. D. gametes.

Biology & Microbiology