Asked in UHS MDCAT 2010 2010

The presence of calcium is essential for the normal development of plants. An adequate supply of calcium appears to stimulate the development of which part of the plants?

Correct answer: C. Root hairs

  • A. Leaves
  • B. Fruits
  • C. Root hairs
  • D. Branches

Explanation

A is incorrect as the growth of the leaves is dependent on nitrogen.B is incorrect as the development of fruit depends on phosphorous.C is correct as root hair development is stimulated by calcium. The entire root system is dependent on calcium.D is incorrect as stem growth is also dependent on nitrogen

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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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