Falling of floral parts, leaves and fruits from the mother plant is called

Options

A. Senescence
B. Abscission
C. Photoperiodism
D. Vernalisation.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the process by which floral parts, leaves, and fruits fall from the mother plant.

2. **Identifying the Options**: We have four options to consider:
- A) Senescence
- B) Abscission
- C) Photoperiodism
- D) Vernalization

3. **Analyzing Each Option**:
- **Senescence**: This term refers to the aging process in plants. It involves the gradual decline in the plant's ability to grow and divide. While senescence can lead to the dropping of leaves and flowers, it is not specifically the process of falling off.
- **Abscission**: This is the process specifically defined as the shedding of floral parts, leaves, and fruits from the plant. It is a natural phenomenon that occurs when the plant no longer needs these parts, often influenced by environmental factors and hormones.
- **Photoperiodism**: This refers to how plants respond to the length of day and night, affecting their growth and flowering. It does not relate to the dropping of leaves or flowers.
- **Vernalization**: This is the process that involves exposure to cold temperatures to induce flowering in certain plants. It does not pertain to the falling of plant parts.

4. **Selecting the Correct Answer**: Based on the definitions and explanations provided, the correct answer to the question is **B) Abscission**. This term directly refers to the process of falling off of floral parts, leaves, and fruits from the mother plant.

5. **Conclusion**: Therefore, the falling of floral parts, leaves, and fruits from the mother plant is called **abscission**.

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