Chapter-21 Crop Production and Management — Online MCQ Test
SCIENCE · Samacheer Kalvi 8th · Tamil Nadu State Board
Practice Chapter-21 Crop Production and Management with a free chapter-wise online MCQ test.
This chapter covers: crops irrigation farming Explains agricultural practices irrigation harvesting and storage methods.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter-21 Crop Production and Management — Important Questions & Answers
Which of the following is the correct order of basic agricultural practices?
- A. Storage → Harvesting → Sowing → Irrigation
- B. Preparation of soil → Sowing → Irrigation → Harvesting
- C. Sowing → Preparation of soil → Harvesting → Storage
- D. Irrigation → Harvesting → Sowing → Preparation of soil
Answer: B. Preparation of soil → Sowing → Irrigation → Harvesting
Crop production starts with preparing the soil, followed by sowing, irrigation, and then harvesting. These are the main steps in cultivation.
Crop production starts with preparing the soil, followed by sowing, irrigation, and then harvesting. These are the main steps in cultivation.
Which tool is commonly used for sowing seeds?
- A. Plough
- B. Seed drill
- C. Sickle
- D. Hoe
Answer: B. Seed drill
A seed drill is used to sow seeds at proper depth and spacing. It helps in uniform sowing and saves seeds.
A seed drill is used to sow seeds at proper depth and spacing. It helps in uniform sowing and saves seeds.
Why is irrigation important for crops?
- A. It helps in increasing soil salinity
- B. It supplies water to plants at regular intervals
- C. It removes all nutrients from the soil
- D. It prevents seed germination
Answer: B. It supplies water to plants at regular intervals
Irrigation provides water to crops when rainfall is insufficient or irregular. Water is essential for growth and proper development of plants.
Irrigation provides water to crops when rainfall is insufficient or irregular. Water is essential for growth and proper development of plants.
A farmer wants to choose a method that uses less water and reduces evaporation loss. Which method should he select?
- A. Flood irrigation
- B. Canal irrigation
- C. Drip irrigation
- D. Traditional basin irrigation
Answer: C. Drip irrigation
Drip irrigation is the most water-efficient method because it supplies water directly to the roots. It greatly reduces evaporation and wastage.
Drip irrigation is the most water-efficient method because it supplies water directly to the roots. It greatly reduces evaporation and wastage.
A crop field is waterlogged due to excessive irrigation. Which of the following is the most likely effect?
- A. Roots may not get enough air
- B. Seeds will instantly become mature
- C. Soil will turn into fertilizer
- D. Plants will stop needing sunlight
Answer: A. Roots may not get enough air
Too much water fills the air spaces in soil, reducing oxygen for roots. This can harm plant growth and even cause root damage.
Too much water fills the air spaces in soil, reducing oxygen for roots. This can harm plant growth and even cause root damage.