Which of the following is incorrect ?

Options

A. Double fertilization is characteristics of angiosperm
B. Double fertilization was discovered by Nawaschin
C. Pollen tube shows apical growth and chemotropic movement
D. Wind pollination is common in legumes

Answer

To determine which of the following statements is incorrect, let's analyze each statement one by one:

1. **Double fertilization is a characteristic of angiosperms.**
- This statement is **true**. Double fertilization is indeed a defining feature of angiosperms (flowering plants). During this process, one male gamete fuses with the egg cell to form a zygote, while the other fuses with two polar nuclei to form the triploid endosperm.

2. **Double fertilization was discovered by Navashtin.**
- This statement is also **true**. The process of double fertilization was discovered by the botanist S.D. Navashtin, which confirms the accuracy of this statement.

3. **Pollen tube shows apical growth and chemotropic movement.**
- This statement is **true** as well. The pollen tube grows towards the ovule in response to chemical signals (chemotropism) and exhibits apical growth, which is the growth at the tip of the pollen tube.

4. **Wind pollination is common in legumes.**
- This statement is **incorrect**. Wind pollination, also known as anemophily, is not common in legumes. Instead, legumes typically rely on animal pollinators, such as bees, and do not produce the characteristics (like fragrance) associated with wind-pollinated plants. Wind pollination is more common in grasses.

Based on the analysis, the **incorrect statement** is:
**Wind pollination is common in legumes.**

### Summary of Steps:
1. Analyze the first statement about double fertilization in angiosperms.
2. Confirm the discovery of double fertilization by Navashtin.
3. Verify the characteristics of pollen tube growth.
4. Assess the commonality of wind pollination in legumes.