Improvement In Food Resources - Olympiad Level MCQ, Class 9 Science - Class 9 MCQ

Yellow revolution is the sudden increase in the production of edible oil due to plantation of Hybrid oil seed like mustard , seasme , etc. Basically yellow revolution. The pioneers of it are : Portuguese. Father of yellow revolution in India : - sam pit roda.

Father of yellow revolution - Shashank Pandey rajawar , satna (MP).

Pulses are rich in:
- Proteins: Pulses are an excellent source of plant-based protein. They contain essential amino acids that are necessary for the growth and repair of body tissues. Pulses are particularly rich in protein compared to other plant-based foods.
- Carbohydrates: Pulses also provide a good amount of carbohydrates. These carbohydrates are slowly digested and provide a steady release of energy, making pulses a great choice for maintaining stable blood sugar levels.
- Oils: While pulses do contain some oils, the amount is relatively low compared to other sources such as nuts and seeds. However, the oils present in pulses are mostly unsaturated fats, which are considered heart-healthy fats.
- Vitamins and minerals: Pulses are a good source of various vitamins and minerals. They are particularly rich in folate, iron, potassium, and magnesium. These nutrients play crucial roles in maintaining overall health and preventing deficiencies.
Overall, pulses are a nutritious and versatile food choice. They are not only rich in proteins, carbohydrates, and essential nutrients but also low in fat and cholesterol. Including pulses in your diet can provide numerous health benefits, including improved heart health, weight management, and better digestion.

The kharif cropping season is from July –October during the south-west monsoon and the Rabi cropping season is from October-March (winter). The crops grown between March and June are summer crops. The rabi crops include wheat, barley, oats (cereals), chickpea/gram (pulses), linseed, mustard (oilseeds) etc.

Rabi crops are sown in October.
Rabi crops are a type of crops that are sown during the winter season. These crops require a cool climate and sufficient moisture to grow and develop. The term "Rabi" refers to the Arabic word for "spring," indicating that these crops are sown in winter and harvested in spring.
Here are the reasons why Rabi crops are sown in October:
1. Favorable temperature:
- Rabi crops thrive in cooler temperatures, which are essential for their growth and development.
- October provides the ideal temperature range for sowing Rabi crops, as it is neither too hot nor too cold.
2. Adequate moisture:
- October is the time when monsoon rains have subsided, ensuring sufficient moisture in the soil.
- This moisture is crucial for germination and early growth of Rabi crops.
3. Sufficient sunlight:
- October offers an optimum balance of sunlight, which is necessary for photosynthesis and healthy crop growth.
- Rabi crops require sunlight to produce food through photosynthesis, leading to their proper development.
4. Crop rotation:
- Rabi crops are often grown as part of a crop rotation system, where different crops are grown in alternating seasons.
- October is the time when the previous Kharif crops are harvested, creating space and opportunity for sowing Rabi crops.
In conclusion, Rabi crops are sown in October because it provides favorable temperatures, adequate moisture, sufficient sunlight, and aligns with crop rotation practices.

Pisa Lerma is improved variety of wheat developed by mutation breeding using mutagens to induce favourable mutations.

Micronutrients

• Iron: Iron is an essential micronutrient that plays a crucial role in transporting oxygen throughout the body. It is necessary for the production of hemoglobin, which carries oxygen in the blood. Iron is also involved in energy production and immune function.


• Calcium: Calcium is another important micronutrient that is essential for strong bones and teeth. It also plays a role in muscle function, nerve transmission, and blood clotting.


• Magnesium: Magnesium is a micronutrient that is involved in numerous biochemical reactions in the body. It plays a role in energy production, muscle and nerve function, and the synthesis of DNA, RNA, and proteins.


• Potassium: Potassium is a micronutrient that is necessary for proper fluid balance, nerve function, and muscle contractions. It also helps regulate blood pressure and heart rhythm.

Conclusion
Among the given options, iron is the correct answer as it is a micronutrient that is essential for various bodily functions, including oxygen transport, energy production, and immune function. Calcium, magnesium, and potassium are also important micronutrients, but they are not the correct answer in this case.

Nitrogen fixing bacteria and cyanobacteria are the common biofertilizers as they are presents in legume nodes in the root of leguminous plants like mustard, chickpea and etc.They can be grown with the existing crops and this provide the existing crops with nitrogen at is cheapest compared to the other options.They can be grown with the existing crops with the same amount of water and soil , so its the cheapest and common biofertilizer.

Mixed cropping, also known as polyculture, inter-cropping, or co-cultivation, is a type of agriculture that involves planting two or more plants simultaneously in the same field, interdigitating the crops so that they grow together.

Crop Rotation:
- Crop rotation is a practice of growing different types of crops in a pre-planned succession on the same piece of land.
- It involves dividing the land into different sections or plots and rotating the crops grown in each section every growing season.
- The main purpose of crop rotation is to improve soil fertility, prevent the build-up of pests and diseases, and increase overall crop productivity.
- By rotating crops, different plants with different nutrient requirements are grown, allowing the soil to replenish and restore its nutrient levels.
- It also helps to break pest and disease cycles as different crops attract different pests and diseases.
- Crop rotation can also help in weed control as certain crops can suppress weeds more effectively than others.
- Additionally, crop rotation helps in managing the balance of soil microorganisms, which play a crucial role in maintaining soil health.
- The specific rotation pattern can vary depending on the region, climate, and specific crops being grown.
- Common crop rotation systems include alternating between legume crops (such as peas or beans) and non-legume crops (such as corn or wheat), or rotating between different families of crops.
- Overall, crop rotation is an important practice in sustainable agriculture as it promotes soil health, reduces the need for chemical inputs, and contributes to long-term agricultural productivity.