Question

Match the items of column A with those in column B.

Column 1	Column 2
Phosphorus	Earthworm
Boron	Weed
Vermicompost	Macronutrient
Green manure	Micronutrient
Pathenium	Sunhemp

Answer 1

A. Phosphorus iii. Macronutrients

1. Plants require certain macromolecules in a larger amount for proper growth and development.
2. Macromolecules include carbon, nitrogen, phosphorus, oxygen, etc.

B. Boron iv. Micronutrient

1. Plants also require certain essential micro molecules in trace amounts for proper growth and development
2. Micronutrients include copper, zinc, boron, manganese, etc,

C. Vermicompost i. Earthworm

1. Vermicomposting is a process by which worms are used to convert organic matter into humus-like material known as vermicompost.
2. It includes worms like red wigglers, white worms, and earthworms.

D. Green manure v. Sunhemp

1. Green manure is the organic manure obtained by the decomposition of green plant wastes.
2. Sunhemp, Dhanchia, and guar are examples of green plants.

E. Parthenium ii. Weed

1. Weeds are the unwanted plants that grow along with the main crop plants.
2. Parthenium and Xanthium are examples of weeds.

	COLUMN A		COLUMN B
A	Phosphorus	iii.	Macronutrients
B	Boron	iv.	Micronutrient
C	Vermicompost	i.	Earthworm
D	Green manure	v	Sunhemp
E	Parthenium	ii.	Weed