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Olympiad Test: Crop Production And Management - Class 8 MCQ


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20 Questions MCQ Test Science Class 8 - Olympiad Test: Crop Production And Management

Olympiad Test: Crop Production And Management for Class 8 2024 is part of Science Class 8 preparation. The Olympiad Test: Crop Production And Management questions and answers have been prepared according to the Class 8 exam syllabus.The Olympiad Test: Crop Production And Management MCQs are made for Class 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Crop Production And Management below.
Solutions of Olympiad Test: Crop Production And Management questions in English are available as part of our Science Class 8 for Class 8 & Olympiad Test: Crop Production And Management solutions in Hindi for Science Class 8 course. Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free. Attempt Olympiad Test: Crop Production And Management | 20 questions in 20 minutes | Mock test for Class 8 preparation | Free important questions MCQ to study Science Class 8 for Class 8 Exam | Download free PDF with solutions
Olympiad Test: Crop Production And Management - Question 1
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_________are like artificial rainmakers.

Detailed Solution for Olympiad Test: Crop Production And Management - Question 1

Cloud seeding is a type of weather modification that aims to change the amount or type of precipitation, mitigate hail or disperse fog

Olympiad Test: Crop Production And Management - Question 2
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'Rabi' in Arabic means ________________

Detailed Solution for Olympiad Test: Crop Production And Management - Question 2
The crops grown in the winter season are called rabi crops. Their time period is generally from October to March. The term is derived from the Arabic word for spring, which is used in the Indian subcontinent, where it is the spring harvest (also known as the winter crop).

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Olympiad Test: Crop Production And Management - Question 3
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_______farming includes cattle, goat, sheep, poultry, and fish farming.

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Animal-based farming includes different types of farming like cattle farming, goat farming, sheep farming, poultry farming, and fish farming.

Olympiad Test: Crop Production And Management - Question 4
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The bacteria present in root nodules of leguminous plants that fix the atmospheric nitrogen is
Detailed Solution for Olympiad Test: Crop Production And Management - Question 4
The Rhizobium or Bradyrhizobium bacteria colonize the host plant's root system and cause the roots to form nodules to house the bacteria. The bacteria then begin to fix the nitrogen required by the plant.

Olympiad Test: Crop Production And Management - Question 5
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Given below are statements about the harmful effects of weeds on crop plants.

(i)They interfere while harvesting.

(ii)They help crop plants thrive.

(iii)They compete with crop plants for water, nutrients, space, and light.

(iv)They affect plant growth.

Choose the correct statements from above.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 5
Weeds compete with crops for one or more plant growth factors such as mineral nutrients, water, solar energy, and space and they hinder crop cultivation operations. Competition for mineral nutrients: Being hardy and vigorous in growth habit; they soon outgrow the crops and consume large amounts of water and nutrients.

Olympiad Test: Crop Production And Management - Question 6
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Which system is a boon in regions of low availability of water?
Detailed Solution for Olympiad Test: Crop Production And Management - Question 6
Drip irrigation is a type of micro-irrigation system that has the potential to save water and nutrients by allowing water to drip slowly to the roots of plants, either from above the soil surface or buried below the surface. The goal is to place water directly into the root zone and minimize evaporation.

Olympiad Test: Crop Production And Management - Question 7
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Which of the following has high nutrient content but can cause side effects?
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Fertilizers, chemically synthesized substances that are rich in plant nutrients such as NPK. They are artificially made but have a rapid response. Overuse of fertilizers can cause negative effects like loose soil fertility, bioaccumulation, etc.

Olympiad Test: Crop Production And Management - Question 8
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The agricultural tool used to sow seeds
Detailed Solution for Olympiad Test: Crop Production And Management - Question 8

A seed drill (also hoe drill; seeder) is a device used in agriculture that sows seeds for crops by positioning them in the soil and burying them to a specific depth. This ensures that seeds will be distributed evenly.

Olympiad Test: Crop Production And Management - Question 9
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Which of the following can be obtained from fishes?
Detailed Solution for Olympiad Test: Crop Production And Management - Question 9
Fish can be obtained in two ways

1) Capture fishing is the process of obtaining fish from natural resources.

2) Culture fishery: it is the practice of farming fishes. Farming can be done in both freshwater ecosystem ( which includes river water, pond water ) and marine ecosystem.

Olympiad Test: Crop Production And Management - Question 10
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Rabi crops are grown _________________
Detailed Solution for Olympiad Test: Crop Production And Management - Question 10
The crops grown in the winter season are called rabi crops. Their period is generally from October to March. Examples of rabi crops are wheat, gram, pea, mustard, and linseed.

Olympiad Test: Crop Production And Management - Question 11
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Weeds can be removed by using
Detailed Solution for Olympiad Test: Crop Production And Management - Question 11
Weeds are undesirable plants that are not cultivated. They are the plants in the wrong place. They compete with the crop for nutrients and space. Hence, they are harmful to the crop. These weeds can be controlled by using weedicides.

Olympiad Test: Crop Production And Management - Question 12
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________ is used to bring a bucket of water where the power is needed.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 12
Moat system of irrigation involves taking out water directly from the well and supplying it to the irrigation field. It consists of a bucket tied to a rope attached to the well by a pulley system.

Olympiad Test: Crop Production And Management - Question 13
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When plants of the same kind are cultivated at one place on a large scale, it is called __________.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 13
When plants of the same kind are cultivated at one place on a large scale, it is called crops.

Olympiad Test: Crop Production And Management - Question 14
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Name the crops which are grown in rainy season.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 14

Crops that are sown during the southwest monsoon season are called Kharif or monsoon crops. These crops are sown at the beginning of the season around end May to early June and are harvested post the monsoon rains beginning October. Rice, maize, pulses such as urad, moong dal, and millets are among the key Kharif crops.

Olympiad Test: Crop Production And Management - Question 15
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Name the crops which are grown in winter season.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 15
The Rabi means when the crop is harvested. Crops that are grown in the winter season, from November to April are called Rabi Crops. Some of the important rabi crops are wheat, barley, peas, gram, and mustard.

Olympiad Test: Crop Production And Management - Question 16
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The rainy season in India generally starts from __________.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 16
Monsoon or rainy season, lasting from June to September. The season is dominated by the humid southwest summer monsoon, which slowly sweeps across the country beginning in late May or early June. Monsoon rains begin to recede from North India at the beginning of October. South India typically receives more rainfall.

Olympiad Test: Crop Production And Management - Question 17
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The branch of agriculture which deals with the rearing of animals-livestock is called ___________.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 17
The applied branch of biology which deals with the cultivation of plants and rearing of animals is called agriculture. Generally, the art or practice of cultivating land is referred as agriculture. The branch of agriculture which deals with food, health, and management of animals is known as animal husbandry.

Olympiad Test: Crop Production And Management - Question 18
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The supply of water to crops at regular intervals is called ____________.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 18

The supply of water to crops at regular intervals is called irrigation.

 

 

Olympiad Test: Crop Production And Management - Question 19
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Name the substances which are added to the soil in the form of nutrients for the healthy growth of plants.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 19
The substances which are added to the soil in the form of nutrients for the healthy growth of plants are called minerals. These can be organic termed as manure or inorganic termed as fertilizers.

Olympiad Test: Crop Production And Management - Question 20
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Paddy and maize are the examples of ___________.
Detailed Solution for Olympiad Test: Crop Production And Management - Question 20
Paddy, maize are examples of Kharif crops because they require a lot of water so they are cultivated in rainy season.
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