I. Bambo species flower only once in their life time, generally after 50 -100 years, produce large number of fruits and die.
II. In animals the juvenile phase is followed by morphological and physiological changes prior to active reproductive behaviour.
III. The reproductive phase is of same duration in all organisms.
IV. Juvenile phase is the period of growth between the birth of an individual till it reaches reproductive maturity.
V. In plants juvenile phase is also called vegetative phase. Which of the following statements is false -

Options

A. I
B. II
C. III
D. V

Answer

To determine which statement is false among the provided options, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement I**: "Bamboo species flower only once in their lifetime, generally after 50-100 years, produce a large number of fruits and die."
- This statement is true. Bamboo does have a unique flowering cycle where it flowers once after many years, produces seeds, and then dies.

2. **Statement II**: "In animals, the juvenile phase is followed by morphological and physiological changes prior to active reproductive behavior."
- This statement is also true. In animals, the juvenile phase indeed precedes the reproductive phase, involving significant changes.

3. **Statement III**: "The reproductive phase is of same duration in all organisms."
- This statement is false. The duration of the reproductive phase varies significantly among different organisms. For example, some organisms reproduce quickly, while others may have a longer reproductive phase.

4. **Statement IV**: "Juvenile phase is the period of growth between the birth of an individual till it reaches reproductive maturity."
- This statement is true. The juvenile phase is defined as the time from birth until an organism reaches reproductive maturity.

5. **Statement V**: "In plants, juvenile phase is also called vegetative phase."
- This statement is true. In plants, the juvenile phase is often referred to as the vegetative phase, where the plant grows but does not yet reproduce.

### Conclusion:
The false statement among the options is **Statement III**: "The reproductive phase is of same duration in all organisms."

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