Question

The unwanted plants that grow in a crop field are known as?
A. Seeds
B. Weeds
C. Fruits
D. Flowers

Answer 1

Hint: There is no garden without weeds. Any plant that is growing unwantedly is known as weed. For example, the grass in the lawn is very lovely but the grass in the garden bed is a weed. Sometimes seeds from wanted plants will spread and the seedlings will appear elsewhere in the garden and become weeds.

Complete answer:
Option (A) is seeds
An embryonic plant enclosed in a protective outer covering is known as a seed. The formation of the seed is a part of the reproduction process in seed plants, the spermatophytes, including the gymnosperm and angiosperm plants.

Option (B) is weeds
Weed, a general term used for any plant growing where it is unwanted or not required. Since the humans first attempted the cultivation of plants, they have had to fight the invasion by weeds into areas that were chosen for the crops. Some of the unwanted plants were later found to have virtues that were not originally suspected and then were removed from the category of weeds and taken under the process of cultivation. Other cultivated plants, which when were transplanted to new climates, escaped the cultivation and became weeds or invasive species. Thus, the category of weeds is ever-changing and is a relative term.

Option (C) is fruits
The fleshy or dry ripened ovary of a flowering plant which encloses a seed or seeds is known as a fruit. So, apricots, bananas and grapes, as well as bean pods, corn grains, tomatoes, cucumbers, and (in their shells) acorns and almonds are all fruits.

Option (D) is flowers
There are two chief kinds of pollination: (1) self-pollination, the pollination of stigma by the pollen from the same flower or another flower and that too on the same plant and (2) cross-pollination, the transfer of pollen from the anther of a flower of one plant to the stigma of the flower of another plant of the same species.

So, the correct option is an option B- 'Weeds'.

Note:
Weeds compete for nutrients with them. So they are harmful to the crops. Weeds are basically the unwanted plants that grow beside some plants. They are unwanted because they compete with the other plants for sunlight, water, air and space. They do not allow the other plants to grow.