Question

Xanthium and Parthenium are commonly known as _____
A. Weeds
B. Plants
C. Roots
D. None of the above

Answer 1

Weeds are plants that cultivate incorrectly. And they damage the environment and the surrounding living habitats. They eat the nutrients from the soil, which make it difficult for other plants and plants to grow as nutrients are not available.

Complete explanation:
Option A Weed: Xanthium and Parthenium are plants that grow without being cultivated in other plant areas and produce their own water and nutrition. They are therefore classified as weeds.
Option A is correct.
Option B Plants: Most plants keep growing over their lifetimes. Like other multicellular organisms, cell growth and cell division combine plants. Cell growth increases cell size and the number of cells increases in cell division (mitosis). Meristem is the key to continued plant cell growth and repair.
Option B is not correct.
Option C Root: Morphological root is split in four areas: root cap, hair elongation and apical meristem, etc. Early root growth is one of the apical meristem functions near the root tip. More or less continually, meristem cells separate, generating more meristem, root cap cells and undifferentiated root cells (which are sacrificed in order to protect meristem).
Option C is not correct.
Option D (none of the above): This is not a suitable option as the weed option is considered as the plants which grow without being cultivated in other plant fields and draw their own water and nutrition for growth.
Option D is not correct.

So, Option A is the correct answer.

Note:
Weeds are types of xanthium and Parthenium. The plants and crops are harmful to them. They must be quickly removed or the nearby crops can be destroyed. Plants compete for food, space, and light, so it is essential to remove them from cultivated areas.