Question

Which technique did Mendel use while experimenting on pea plants?

• A. Natural pollination
• B. Hybridisation
• C. Grafting
• D. Emasculation

Hint:

Mendel used emasculation to prevent self-pollination and control cross-breeding in his experiments with pea plants.

Answer 1

The Correct Option is D

Step 1: Understanding Mendel’s method.
Mendel controlled pollination in his experiments by using the technique of emasculation, where he removed the male parts (anthers) of the flowers to prevent self-pollination. He then cross-pollinated the flowers by transferring pollen from another plant. This method ensured that Mendel could control the genetic cross-breeding of pea plants.
Step 2: Conclusion.
Thus, Mendel used emasculation to control pollination, corresponding to option (d).

Answer 2

Step 1: To control which pea plants crossed with which, Mendel first removed the male parts (anthers) from a flower so it couldn't self-pollinate.

Step 2: This removal of anthers is called emasculation.

Step 3: He then manually transferred pollen from a chosen plant onto that flower.

Step 4: So the technique Mendel used is emasculation — option (D).

Answer 3

Ruling out the other options.
Natural pollination would let a pea flower self-pollinate on its own, giving Mendel no control over which plants crossed, so this isn't his controlled technique.
Hybridisation just describes the overall goal of crossing two varieties, not the specific hands-on step of preparing a flower for a controlled cross.
Grafting is a method of asexually joining plant tissue and has nothing to do with pollination.
That leaves emasculation, removing a flower's anthers before they can self-pollinate, which is exactly the technique Mendel used to control his crosses. So the answer is option (D).