Question

Which of the following is the period between birth and death?

• A. Life cycle
• B. Life span
• C. Birth rate
• D. Propagation

Hint:

Life span varies between species and is influenced by genetic and environmental factors.

Answer 1

The Correct Option is B

Step 1: Understand the terms.
The period between birth and death is a key biological concept related to the longevity of organisms.
Step 2: Review the options.
- Life cycle refers to the stages of development of an organism, but it doesn’t specifically denote the period from birth to death.
- Life span refers to the total duration an organism lives, from birth to death, making this the correct answer.
- Birth rate refers to the number of births in a population and is not related to the life period.
- Propagation refers to the reproduction or spreading of organisms, not the period of life.
Step 3: Conclude.
The period between birth and death is called the life span, making option (B) the correct answer.
Final Answer: \[ \boxed{\text{Life span}} \]