Question

Given below are statements about the harmful effects of weeds on crop plants.

Choose the correct combination of statements.

• A. i, iii and iv.
• B. iii only
• C. iii and iv
• D. i, ii, iii, and iv.

Answer 1

The correct option is A

i, iii and iv.

The correct option is A.

Explanation of the correct option:

Statement i:

1. Weeds interfere with harvesting.
2. It reduces the value of the produce.

Statement iii:

1. Weeds compete with the main crops for water, nutrients, space, and light.
2. They impair the purity of the crop varieties by cross-pollination.

Statement iv:

1. Weeds affect plant growth by competing with the crop for resources.
2. They serve as alternate hosts of pathogens and promote plant diseases.

Explanation of the incorrect options:

Statement ii:

1. Weeds don't help the plants grow healthily.
2. They grow faster and spread out.
3. They suck up the nutrients from the soil and deprive the main crop of resources.

Final answer: The correct statements are (i), (iii), and (iv).