Apples growing on tree can have larger than normal size by

Options

A. Thinning of blossoms
B. Defoliation
C. Decapitation of stem apex
D. Applying of hormones.

Answer

To determine how apples growing on a tree can achieve a larger than normal size, we can analyze the options provided:

1. **Thinning of Blossoms**: This process involves removing some of the blossoms or fruits from the tree. When there are too many fruits on a tree, they compete for nutrients and space. By thinning the blossoms, the remaining apples receive more nutrients and space to grow, leading to larger fruit size. This is the correct option.

2. **Defoliation**: This refers to the removal of leaves from the tree. While leaves are essential for photosynthesis and overall plant health, removing them does not directly contribute to the size of the apples. In fact, it could hinder growth. Therefore, this option is incorrect.

3. **Decapitation of Stem Apex**: Cutting off the stem apex (the growing tip of the plant) can affect the plant's growth patterns but does not specifically lead to larger fruit sizes. This option is also incorrect.

4. **Applying Hormones**: While hormones can influence various growth processes in plants, applying hormones primarily aids in fruit ripening rather than increasing the size of the apples. Thus, this option is incorrect.

In conclusion, the correct answer is **thinning of blossoms**, as it allows for better nutrient allocation to the remaining apples, resulting in larger fruit sizes.

### Step-by-Step Solution:
1. Identify the options given for increasing apple size.
2. Analyze each option:
- **Thinning of Blossoms**: Correct, as it allows for better nutrient distribution.
- **Defoliation**: Incorrect, as it does not promote apple size.
- **Decapitation of Stem Apex**: Incorrect, as it does not directly affect apple size.
- **Applying Hormones**: Incorrect, as it mainly aids in ripening.
3. Conclude that the correct method for achieving larger apples is through **thinning of blossoms**.