Class 8 Science - ICSE-BIOLOGY
Food Production
The chapter 'Food Production' in Class 8 ICSE Biology explores how we obtain food from plants and animals to feed the growing global population. Students will learn about agricultural practices, crop seasons like Kharif and Rabi, soil preparation, sowing, irrigation, and crop protection from pests. The chapter also covers animal husbandry, including cattle farming, poultry, and pisciculture. This is a high-scoring and important topic for ICSE board exams as it builds the foundation for understanding ecology, resource management, and biotechnology in higher classes. Direct questions on agricultural tools, irrigation methods, and animal breeding are frequently asked.
Start Learning FreeKey Concepts
Agriculture and Crop Varieties
Agriculture is the practice of cultivating soil and raising livestock. Crops are broadly classified based on seasons into Kharif (rainy season, e.g., paddy) and Rabi (winter season, e.g., wheat).
Agricultural Practices
These are steps followed by farmers to grow crops, which include preparation of soil, sowing of seeds, adding manure and fertilizers, irrigation, weeding, harvesting, and storage.
Irrigation
The artificial supply of water to crops at regular intervals is called irrigation. Traditional methods include moat and dhekli, while modern methods include sprinkler and drip systems.
Crop Protection
Crops must be protected from weeds (unwanted plants), pests (insects and rodents), and diseases using weedicides, pesticides, and biological control methods.
Animal Husbandry
The science of rearing, feeding, and breeding livestock such as cattle, poultry, fish, and honeybees for food and other useful products is known as animal husbandry.
Important Formulas
Board Exam Info
In the ICSE Class 8 Biology examination, this chapter typically carries around 6 to 10 marks. Common question types include distinguishing between terms (like manure and fertilizers, or Kharif and Rabi crops), defining agricultural practices, giving scientific reasons for crop rotation, and identifying diagrams of modern irrigation systems.
Frequently Asked Questions
What is the difference between manure and fertilizers?
Manure is a natural substance obtained from the decomposition of plant and animal wastes, whereas fertilizers are human-made chemical substances rich in specific nutrients like nitrogen, phosphorus, and potassium.
Why is crop rotation important for soil fertility?
Crop rotation involves growing different crops alternately on the same land. It prevents the depletion of a specific nutrient from the soil and helps restore soil fertility naturally.
What are weeds and how do they affect crops?
Weeds are unwanted plants that grow naturally along with cultivated crops. They compete with the main crop for water, nutrients, space, and sunlight, thereby reducing crop yield.
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