Companion cells load most of the carbohydrates into sieve tube members ____

a. through plasmodesmata
b. by osmosis
c. by antiport


d. through carrier proteins
e. by symport


ANSWER: a

Biology & Microbiology

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What is the relationship between the narrow-sense heritability (h2 ) index and the impact of selection?

What will be an ideal response?

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Plants produce ________ by mitosis and ________ by meiosis

Fill in the blank(s) with correct word

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