Put the correct symbols in the following statements :
I. The average life span of a crow ........ then the average life span of a parrot .
II. The average life span of a rose plant ...... then the average life span of a rice plant.
III. The average life span of a cow .... than the average life span of a crocodile.
IV.The average life span of a banyan tree ..... then the average life span of a banana tree.

Options

A. `I":"'lt',II":"'lt',III":"'lt',IV": "'gt'`
B. `I":"'gt',II":"'gt',III":"'gt',IV":" 'gt'`
C. `I":"'lt',II":"'lt',III":"'lt',IV":" 'gt'`
D. `I":"'lt',II":"'gt',III":"'lt',IV":" 'gt`

Answer

To solve the question, we need to compare the average lifespans of the organisms mentioned in each statement and use the appropriate symbols: ">" (greater than), "<" (less than), or "=" (equal to).

### Step-by-Step Solution:

1. **Statement I: The average life span of a crow ........ then the average life span of a parrot.**
- Average lifespan of a crow: 10-15 years
- Average lifespan of a parrot: 80 years
- Since 80 years (parrot) is greater than 10-15 years (crow), we use the symbol **">"**.
- **Correct Statement:** The average life span of a crow < than the average life span of a parrot.

2. **Statement II: The average life span of a rose plant ...... then the average life span of a rice plant.**
- Average lifespan of a rose plant: 5-7 years
- Average lifespan of a rice plant: 3-4 months (approximately 0.25 years)
- Since 5-7 years (rose) is greater than 0.25 years (rice), we use the symbol **">"**.
- **Correct Statement:** The average life span of a rose plant > than the average life span of a rice plant.

3. **Statement III: The average life span of a cow .... than the average life span of a crocodile.**
- Average lifespan of a cow: 22 years
- Average lifespan of a crocodile: 45 years
- Since 22 years (cow) is less than 45 years (crocodile), we use the symbol **"<"**.
- **Correct Statement:** The average life span of a cow < than the average life span of a crocodile.

4. **Statement IV: The average life span of a banyan tree ..... then the average life span of a banana tree.**
- Average lifespan of a banyan tree: 200 years
- Average lifespan of a banana tree: 25 years
- Since 200 years (banyan) is greater than 25 years (banana), we use the symbol **">"**.
- **Correct Statement:** The average life span of a banyan tree > than the average life span of a banana tree.

### Final Answers:
- I: <
- II: >
- III: <
- IV: >