A) Y provides the carbohydrates that are transported by Z.
B) Y transports sucrose, while Z transports water and minerals.
C) Y helps to filter the liquid transported in Z to facilitate translocation.
D) Y contains ribosomes that synthesize proteins required by Z.
Correct Answer: D
Solution :
The given figure represents structure of phloem. Cell Y is companion cell while Z is sieve tube. Sieve tube lacks cellular organelles, e.g., nucleus, ribosomes, etc. Hence, the adjacent companion cells provide proteins, ATP and other molecules to carry out all the cellular functions in sieve tube cells.
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