Question

Identify (i) and (ii) from the given table.
$\begin{array}{cc}\text{Inorganic substances}& \text{Organic substances}\\ \text{a) Hydrogen}& \text{(i)}\\ \text{b) (ii)}& \text{Fats}\\ \text{c) Oxygen}& \text{Carbohydrates}\end{array}$

• A. (i) Proteins, (ii) Nitrogen
• B. (i) Nitrogen, (ii) Proteins
• C. (i) Lipids, (ii) Proteins
• D. (i) Nitrogen, (ii) Sodium

Answer 1

The correct option is A (i) Proteins, (ii) Nitrogen

Ecosystems are communities that consists of interactions between the living (biotic) and non-living (abiotic) factors. Abiotic factors are further classified as physical factors and chemical factors. Chemical factors are further classified as organic and inorganic substances.

• Organic substances are substances which are mostly composed of hydrocarbons. For example, carbohydrates, fats, proteins, etc.
• Inorganic substances are substances are compounds that do not contain hydrocarbons. For example, hydrogen, nitrogen, oxygen, etc.