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Which one of the following statements pertaining to plant structure is correct?

  1. A
    cork lacks stomata, but lenticels carry out transpiration
  2. B
    passage cells help in transfer of food from cortex to phloem
  3. C
    sieve tube elements possess cytoplasm but no nuclei
  4. D
    the shoot apical meristem has a quiescent centre.

Solution & Step-by-step Explanation

Sieve tube elements are specialized cells in the phloem for transporting organic nutrients. At maturity, they lose their nucleus but retain a thin layer of cytoplasm to function efficiently.Cork cells are dead and impermeable; lenticels are pores for gas exchange.Passage cells in the endodermis facilitate water movement toward the xylem.The quiescent centre is found in the root apical meristem, not the shoot.

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Which one of the following statements pertaining to plant structure is correct?
A
cork lacks stomata, but lenticels carry out transpiration
B
passage cells help in transfer of food from cortex to phloem
C
sieve tube elements possess cytoplasm but no nuclei
D
the shoot apical meristem has a quiescent centre.

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