Question

The walking fern is so named because

• A. it propagates vegetatively by its leaf tips
• B. it known how to walk by itself
• C. its spores are able to walk
• D. it is dispersed through the agency of w alking animals.

Answer 1

The Correct Option is A

The question pertains to the unique reproductive mechanism of the walking fern, a plant known for its distinctive way of propagating. Let's break down the answer to understand why the correct choice is that it "propagates vegetatively by its leaf tips." 

1. Understanding the Walking Fern: The walking fern is a type of fern known scientifically as Asplenium rhizophyllum or Asplenium sibiricum. It belongs to a group of ferns that propagate by a method called vegetative reproduction.
2. Vegetative Reproduction Explanation: This method involves the growth of new plants from parts of the parent plant, rather than from seeds or spores. For the walking fern, this occurs at the tips of its leaves. When the leaf tips reach the ground, they can take root and form a new plant.
3. Why It's Called "Walking": As new plants develop from the leaf tips, they appear to walk across the landscape because each new plant can itself grow new plants from its leaf tips. This gives the impression that the plant is "walking."
4. Ruling Out Other Options:
   • Option 2 (it knows how to walk by itself): This is a fanciful description and not scientifically accurate, as plants do not move like animals.
   • Option 3 (its spores are able to walk): Spores may disperse in various ways but do not have the ability to walk.
   • Option 4 (it is dispersed through the agency of walking animals): While some plants do rely on animals for dispersal, this is not the case for the walking fern.

Therefore, the ability of the walking fern to propagate via its leaf tips is the reason why it is aptly named, aligning with the correct choice: "it propagates vegetatively by its leaf tips."