Observe the relationship between first two words and then fill the suitable word/words at the fourth place.
Glucose : Stomata open :: Starch : Stomata : ....................

Explanation

To solve the analogy presented in the question, we need to analyze the relationship between the first two words and apply that understanding to the second pair.

1. **Understanding the First Pair: Glucose : Stomata open**
- Glucose is produced during the process of photosynthesis, which occurs when the stomata of the plant are open. The stomata allow for gas exchange, enabling the plant to take in carbon dioxide and release oxygen, which is essential for photosynthesis. This process primarily occurs during the daytime when the stomata are open.

2. **Analyzing the Second Pair: Starch : Stomata : ?**
- Starch is a storage form of glucose in plants. When glucose is produced during photosynthesis, if there is an excess, it is converted into starch and stored in various parts of the plant such as leaves, stems, and fruits.
- Unlike glucose, starch is not actively involved in the photosynthesis process. When starch is being stored, the stomata do not need to be open because there is no immediate requirement for gas exchange. In fact, during the night or when photosynthesis is not occurring, the stomata are typically closed.
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