Given figure shows:
Correct answer: A. Structure of a Lenticel
- A. Structure of a Lenticel
- B. Hydathode showing gaseous vapour exchange
- C. Fungus reproducing by spore formation
- D. Algae reproducing by spore formation
Explanation
The figure shows the structure of 'Lenticel', which facilitates gaseous exchange and transpiration. These are aerating pores in the bark of woody trees. These are surrounded by loosely arranged thin walled complementary cells, enclosing intercellular spaces for gaseous exchange.
This question appeared on the UHS MDCAT 2019 paper, which you can sit online with every answer explained.
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About Plant Nutrition and Transport
Plants require macronutrients and micronutrients for growth, and mineral deficiencies produce recognizable symptoms. Transport involves water and minerals through xylem by transpiration pull, cohesion and adhesion, while phloem translocates sugars from sources to sinks. Root pressure and transpiration are distinct mechanisms.
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