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NTA Abhyas NEET2020BotanyAnatomy of Flowering PlantsPractice

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

Options

  1. ACork lacks stomata, but lenticels carry out transpiration.
  2. BPassage cells help in transfer of food from cortex to phloem.
  3. CSieve tube possess cytoplasm and nuclei.
  4. DShoot apical meristem has a vascular tissue.

Correct answer

A. Cork lacks stomata, but lenticels carry out transpiration.

Step-by-step solution

Cork is dead tissue that lacks stomata but lenticels present carries transpiration (0.1-1% only) also carries gaseous exchange. Passage cells are present in endodermis which regulates the unidirectional flow of water and minerals in roots. Sieve tube lacks nuclei and the nucleus of the companion cells regulates its functioning. Shoot apex consists of meristematic tissue only.

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