Question

Phosphorus (P) contributes favourably to the development of plants with respect to
A. flowering, fruiting including seed formation
B. crop maturation
C. imparting green colour
D. increasing succulence
E. cell division

• A. A, B and C only
• B. B, C and E only
• C. D, E and A only
• D. A, B and E only

Hint:

Remember that "P" is associated with "Power/energy (ATP), Propagation (seeds/fruits), and Promotion of maturity." Nitrogen (N), on the other hand, is responsible for the green foliage color and succulence.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Phosphorus is a critical macronutrient required by plants in large quantities.
It plays an indispensable structural and functional role in energy storage and transfer (ATP), nucleic acid synthesis, and cell membranes.

Step 2: Detailed Explanation:
Let us analyze the proposed physiological functions to identify those associated with Phosphorus:
- A (Flowering, fruiting, and seed formation): Phosphorus is heavily involved in energy transfer during reproduction and is vital for seed development and fruit setting.
- B (Crop maturation): Adequate phosphorus nutrition counteracts the effects of excess nitrogen, accelerating crop maturity.
- C (Imparting green colour): This function belongs to Nitrogen and Magnesium, which are core constituents of the chlorophyll molecule.
- D (Increasing succulence): This is primarily driven by Nitrogen, which increases vegetative cellular hydration.
- E (Cell division): Phosphorus is a core component of DNA and RNA, making it absolutely necessary for rapid cell division and tissue growth.
Thus, statements A, B, and E are the correct physiological contributions of Phosphorus.

Step 3: Final Answer:
The combination of correct statements is A, B, and E, corresponding to Option (D).