Which of the following statement is correct ?

Options

A. Small animals have a low surface area relative to their volume .
B. Thermoregulation is energetically expensive for many organisms.
C. Snails and fish go into hibernation.
D. Bacteria and fungi form thin walked spores in unfavourable conditions

Answer

To determine which statement is correct, we will evaluate each option one by one:

1. **Small animals have a low surface area relative to their volume.**
- This statement is incorrect. Small animals actually have a high surface area relative to their volume. According to the surface area to volume ratio, smaller objects have a larger surface area compared to their volume. Therefore, this statement is false.

2. **Thermoregulation is energetically expensive for many organisms.**
- This statement is correct. Thermoregulation is the process by which organisms maintain their internal body temperature. Smaller animals, having a larger surface area relative to their volume, lose body heat more rapidly. As a result, they need to expend more energy to maintain their body temperature, making thermoregulation energetically expensive for them. Thus, this statement is true.

3. **Snails and fish go into hibernation.**
- This statement is incorrect. Hibernation is a state of minimal activity and metabolic depression that occurs during winter. However, snails and fish typically undergo a process called aestivation, which is similar to hibernation but occurs during the summer months. Therefore, this statement is false.

4. **Bacteria and fungi form thin-walled spores in unfavorable conditions.**
- This statement is also incorrect. In unfavorable conditions, bacteria and fungi form thick-walled spores known as endospores. These endospores are designed to withstand extreme conditions and remain dormant until favorable conditions return. Thus, this statement is false.

After evaluating all the statements, the correct one is:

**Correct Statement: Thermoregulation is energetically expensive for many organisms.**