Learn Class 8 Science - Crop Production and Management

Agriculture is the practical discipline of biology concerned with the cultivation of plants and the upbringing of animals. Agriculture refers to the art or practice of farming land in general. Animal husbandry is the branch of agriculture that deals with animal diet, health, and management.

Crop

When plants of the same species are produced and farmed on a big scale in one location, this is referred to as a crop.

Crops can also be categorized according to the seasons, as seen below:

Kharif Crops

Kharif crops are grown during the monsoon (rainy) season (June-September). Examples are crops such as maize, millet (bajra), and cotton. These crops' seeds are planted at the start of the monsoon season. These crops are harvested after the monsoon season once they have matured (Oct.-Nov.)

Rabi Crops

Rabi crops are grown throughout the winter months (October to March). Wheat, gramme, and mustard, for example. These crops' seeds are planted at the start of the winter season. Crops are harvested after the winter season after they mature (April-May).

Agricultural Practices

Agricultural practices refer to all activities farmers engage in to cultivate plants.

Basic Crop Production Techniques

Soil preparation

Before planting crop seeds, the soil in the fields is loosened and churned. Ploughing or tilling is the term for this process.

Plough

A plough is a vast farming instrument with one or more blades attached in a frame to turn the soil over and cut furrows. Ploughs can be manufactured entirely of wood, wood, iron, or iron alone.

Learning Videos for 8th Grade Science - Crop Production and Management

Crop Production and Management Sample Questions for Class 8

Question 1

Which chemical reaction correctly summarizes photosynthesis?
A. 4 CO_2 + 6 H_2O + 2 O_2 = C_6H_12O_6
B. 6 CO_2 + 6 H_2O + "energy" = C_6H_12O_6 + 6O_2
C. 6 H_2O + 6 H_2 + "energy" = C_6H_12O_6
D. 6 CO_2 + 6 H_2O + 6 O_2 = C_6H_12O_6 + O_2

Question 2

Photosynthesis cannot take place if is never available.
A. ammonia
B. sodium chloride
C. oxygen
D. light

Question 3

Suppose you were to examine plant and animal cells under a microscope. Which structures would you find in both cell types?
A. cell wall, endoplasmic reticulum, and Golgi body
B. cell wall, cytoplasm, and Golgi body
C. nucleolus, ribosomes, and endoplasmic reticulum
D. all of above

Question 4

Which statement describes a primary distinction between respiration and photosynthesis?
A. Photosynthesis needs oxygen, while respiration needs water.
B. Photosynthesis needs carbon dioxide, while respiration needs oxygen and sugars.
C. Photosynthesis makes oxygen, while respiration makes water.
D. Photosynthesis makes water, while respiration makes carbon dioxide.

Question 5

A classification of metamorphic rocks would include whether they are
A. chemical or organic.
B. intrusive or extrusive.
C. foliated or nonfoliated.
D. basaltic or granitic.