Identify two physiological process induced by two different phytoharmones having a common precurer which is formed due to the catlytic activity of pyruvic dehydrogenous complex
(I) More female flowers in cucumber
(II) `alpha`-amylase production in barely grain
Acceleration of fruit ripening in tomato
(IV) Delay in sprouting of potato tubers
The correct combination is

Options

A. a, b
B. a, c
C. c, d
D. b, d.

Answer

To solve the question, we need to identify two physiological processes induced by two different phytohormones that share a common precursor formed by the catalytic activity of the pyruvic dehydrogenase complex.

### Step-by-Step Solution:

1. **Identify the Common Precursor:**
- The common precursor formed due to the catalytic activity of the pyruvic dehydrogenase complex is associated with the synthesis of certain phytohormones. In this case, the relevant phytohormones are ethylene and malic hydrazide.

2. **Identify the Physiological Processes:**
- **Ethylene:** This phytohormone is known for its role in promoting fruit ripening. Specifically, it accelerates the ripening of tomatoes.
- **Malic Hydrazide:** This is a derivative of auxin and is known to delay the sprouting of potato tubers.

3. **Evaluate the Given Options:**
- (I) More female flowers in cucumber - Incorrect, not induced by ethylene or malic hydrazide.
- (II) Alpha-amylase production in barley grain - Incorrect, not related to the identified phytohormones.
- (III) Acceleration of fruit ripening in tomato - Correct, induced by ethylene.
- (IV) Delay in sprouting of potato tubers - Correct, induced by malic hydrazide.

4. **Select the Correct Combination:**
- The correct physiological processes are:
- (III) Acceleration of fruit ripening in tomato (by ethylene)
- (IV) Delay in sprouting of potato tubers (by malic hydrazide)

5. **Final Answer:**
- The correct combination of physiological processes is (III) and (IV), which corresponds to option C and D.