When dried Polypodium sp. (a type of resurrection fern) is exposed to water, how does it typically respond both in a plastic container and in its natural environment?

• A. It changes color permanently but does not rehydrate.
• B. It rapidly rehydrates and resumes normal photosynthetic activity.
• C. It decomposes quickly due to excess moisture.
• D. It remains dry and shows no visible change.

Answer: (B)

Verified step by step guidance

1. Understand the unique adaptation of resurrection ferns (Polypodium sp.): These plants are desiccation-tolerant, meaning they can survive extreme dryness and rehydrate when exposed to water.
2. Recognize the physiological response: When exposed to water, resurrection ferns rapidly absorb moisture, rehydrating their cells and tissues.
3. Consider the photosynthetic activity: After rehydration, the fern resumes normal photosynthesis, which is essential for energy production and survival.
4. Compare the response in different environments: In a plastic container, the fern rehydrates similarly to its natural environment, as the process is driven by water availability rather than location.
5. Eliminate incorrect options: The fern does not change color permanently, decompose due to moisture, or remain dry without visible change. Its ability to rehydrate and resume photosynthesis is the correct answer.