Crops are classified into Kharif (rainy season) and Rabi (winter season) types. Kharif crops include paddy, maize, soybean, groundnut, and cotton. Rabi crops include wheat, gram, pea, mustard, and linseed. NCERT Class 8 Science Chapter 1 Crop Production and Management

The primary purpose of photosynthesis in plants is to convert light energy into chemical energy (glucose), providing the plant with a source of nutrition and releasing oxygen as a byproduct. NCERT Class 8 Science Chapter 1 Crop Production and management

A crop refers to a large-scale cultivation of plants of the same kind at one place. For instance, a wheat crop means all plants grown in a field are wheat. NCERT Class 8 Science Chapter 1 Crop Production and management

Animals get their food from plants, other animals, or a combination of both. They are either herbivores (plant-eaters), carnivores (meat-eaters), or omnivores (consumers of both plants and animals). NCERT Class 8 Science Chapter 1 Crop Production and Management

Organisms, including humans, need to eat food to obtain essential nutrients and energy. The energy derived from food is utilized for various body functions such as digestion, respiration, and excretion. NCERT Class 8 Science Chapter 1 Crop Production and Management