Every question from this NCERT chapter, with a detailed explanation.
Consider the following statements regarding Manure: 1. It depletes the soil of organic matter. 2. In sandy soils, it increases the water holding capacity. 3. In clayey soils, organic matter helps in drainage. Which of the statements given above is/are correct?
In the context of sustainable agriculture, what does the term 'Green Manure' refer to?
Consider the following statements regarding weeds: 1. Xanthium and Parthenium are examples of beneficial crops. 2. Weeds compete with crop plants for food, space, and light. 3. Weeds are beneficial as they enhance nutrient absorption by crop plants. Which of the statements given above is/are correct?
In the context of insect pests attacking plants, which of the following modes of attack are observed? 1. Cutting the root, stem, and leaf. 2. They provide nutrients to the plant by sucking cell sap. 3. Boring into stems and fruits. Select the correct answer using the code given below:
Which one of the following agricultural practices is primarily used as a preventive measure for weed control?
With reference to the storage of grains, consider the following statements: 1. Biotic factors causing loss include rodents, fungi, and bacteria. 2. Abiotic factors causing loss are limited to inappropriate temperature only. 3. Discolouration of produce is generally not considered a storage loss. Which of the statements given above is/are correct?
Which technique is commonly employed to control pest infestation in stored food grains?
Consider the following statements regarding Cattle Farming: 1. Bos indicus refers to cows and Bos bubalis refers to buffaloes. 2. Milch animals are used exclusively for farm labour. 3. Draught animals are primarily used for farm labour. Which of the statements given above is/are correct?
Consider the following desirable traits for variety improvement in poultry: 1. Number and quality of chicks. 2. Dwarf broiler parent for commercial chick production. 3. Low tolerance to high temperature conditions. 4. High maintenance requirements. Which of the statements given above are correct?
Consider the following statements regarding 'Fish Farming': 1. Fish culture cannot be practiced in combination with a rice crop. 2. Brackish water resources include estuaries and lagoons. 3. Yields from aquaculture in inland water bodies are generally high. Which of the statements given above is/are correct?
In plant breeding, 'Biotic Resistance' refers to the ability of a crop to withstand:
Which of the following environmental factors regulates the flowering and growth phases in plants based on the duration of light exposure?
With reference to the nutritional value of different crops, consider the following statements: 1. Cereals provide the carbohydrates required for energy. 2. Pulses are the primary source of carbohydrates in the diet. 3. Oil seeds are cultivated mainly to provide carbohydrates. Which of the statements given above is/are correct?
Consider the following statements regarding crop seasons in India: 1. Kharif crops are grown during the rainy season from June to October. 2. Rabi crops are grown in the winter season from November to April. 3. Paddy and soyabean are examples of Rabi crops. 4. Wheat and mustard are examples of Kharif crops. Which of the statements given above are correct?
With reference to 'Crop Variety Improvement', consider the following statements: 1. Hybridisation involves crossing between genetically dissimilar plants. 2. Intergeneric hybridisation refers to crossing between two different varieties of the same species. 3. Genetically modified crops are produced by introducing a gene that provides a desired characteristic. Which of the statements given above is/are correct?
Which of the following are desirable agronomic characteristics for crop improvement? 1. Tallness and profuse branching for cereal crops. 2. Tallness and profuse branching are desirable characters for fodder crops. 3. Dwarfness for cereals to consume fewer nutrients. Select the correct answer using the code given below:
Consider the following statements regarding the factors for which crop variety improvement is done: 1. Developing varieties with wider adaptability restricts crop production to specific regions. 2. Short duration maturity allows farmers to grow multiple rounds of crops in a year. 3. Biotic resistance refers to resilience against drought and salinity. Which of the statements given above is/are correct?
With reference to plant nutrients, consider the following statements: 1. Carbon is supplied to plants by air. 2. Hydrogen is supplied to plants by air. 3. Soil supplies thirteen essential nutrients to plants. Which of the statements given above is/are correct?
Which of the following pairs is/are correctly matched? | Nutrient Type | Examples 1. | Macro-nutrient | Nitrogen, Phosphorus, Potassium 2. | Micro-nutrient | Iron, Manganese, Zinc 3. | Macro-nutrient | Calcium, Magnesium, Sulphur 4. | Micro-nutrient | Copper, Molybdenum, Chlorine Select the correct answer using the code given below:
With reference to Fertilizers, consider the following statements: 1. They are commercially produced plant nutrients supplying nitrogen, phosphorus, and potassium. 2. Continuous use of fertilizers enhances soil fertility by replenishing organic matter. 3. Fertilizers are biodegradable and never cause water pollution. Which of the statements given above is/are correct?
Which of the following practices are integral to 'Organic Farming'? 1. Use of bio-fertilizers like blue-green algae. 2. Use of synthetic pesticides like DDT. 3. Maximum input of chemical fertilizers for high yield. 4. Healthy cropping systems like mixed cropping. Select the correct answer using the code given below:
Consider the following statements regarding irrigation systems in India: 1. Tube wells tap water from deeper strata compared to dug wells. 2. River lift systems are used only where canal flow is abundant. 3. Tanks are large storage reservoirs designed to intercept river flow. Which of the statements given above is/are correct?
With reference to 'Inter-cropping', consider the following statements: 1. It involves growing two or more crops simultaneously without any definite row pattern. 2. Crops are selected such that their nutrient requirements are different. 3. It prevents pests and diseases from spreading to all plants belonging to one crop. Which of the statements given above is/are correct?
What is the primary practice involved in 'Crop Rotation'?
In cattle farming, exotic breeds such as Jersey and Brown Swiss are primarily selected for which trait?
With reference to cattle feed, consider the following statements: 1. Roughage is largely composed of proteins with negligible fibre. 2. Concentrates are low in fibre and contain relatively high levels of proteins. 3. Feed additives containing micronutrients are used to promote the health of the animal. Which of the statements given above is/are correct?
How do internal parasites, such as worms, primarily affect the health of cattle?
In poultry farming, what is the primary difference between 'layers' and 'broilers'?
With reference to the nutritional requirements of poultry, consider the following statements: 1. The ration for broilers is protein-poor with minimal fat content. 2. The level of vitamins A and K is kept high in poultry feeds. 3. The dietary requirements for broilers are exactly the same as those for egg layers. Which of the statements given above is/are correct?
Which term specifically refers to the cultivation of marine organisms for food?
Consider the following statements regarding Marine Fisheries: 1. Pomphret, mackerel, and tuna are popular marine fish varieties. 2. Satellites and echo-sounders are exclusively used for inland fisheries. 3. Marine fish farming includes shellfish like prawns and mussels. Which of the statements given above is/are correct?
What is the primary advantage of the 'Composite Fish Culture' system?
Match List I with List II and select the correct answer using the code given below: List I | List II A. Catla | 1. Weed feeders B. Rohu | 2. Surface feeders C. Mrigal | 3. Middle-zone feeders D. Grass Carp | 4. Bottom feeders
In fish farming, the issue of impure seed availability is primarily addressed through which method?
Which one of the following is an Italian bee species introduced in India to enhance honey production?
Consider the following statements regarding the Italian bee (A. mellifera): 1. They have a very low honey collection capacity. 2. They sting less than the local varieties. 3. They stay in a given beehive for long periods and breed very well. Which of the statements given above is/are correct?
In the context of apiculture, what does the term 'Pasturage' refer to?
How does 'Pasturage' affect honey production? 1. It determines the quantity of honey. 2. It has no influence on the taste of the honey. Which of the statements given above is/are correct?
Consider the following statements about 'Check-dams': 1. They lead to a significant decrease in groundwater levels. 2. They stop rainwater from flowing away. 3. They help in reducing soil erosion. Which of the statements given above is/are correct?
Which one of the following is essential for photosynthesis but is not considered a source of nutrients for plants?
Consider the following statements regarding 'Sustainable Agriculture': 1. It involves increasing food production without degrading the environment. 2. It emphasizes the maximum exploitation of natural resources regardless of balance. 3. Monoculture is the primary practice recommended for sustained livelihood. Which of the statements given above is/are correct?
What is the fundamental difference between 'Capture Fishing' and 'Culture Fishery'?
With reference to 'Compost' and 'Vermi-compost', consider the following statements: 1. Compost is prepared by decomposing farm waste material in pits. 2. Vermi-compost is prepared exclusively using chemical decomposing agents. 3. Both are rich in organic matter and nutrients. Which of the statements given above is/are correct?
Which of the following is a micronutrient for plants?
Which one of the following crops is primarily cultivated as a source of protein?
Which of the following statements is/are correct regarding 'Droughts'? 1. They are characterized by excessive precipitation over a short period. 2. Heavy soils with high clay content have high water retention capacity. 3. No crop varieties have been developed to tolerate drought conditions. Select the correct answer using the code given below:
Which one of the following practices is excluded from the principles of 'Organic Farming'?
Which of the following is considered an eco-friendly approach to pest management that relies on plant modification?
Consider the following statements regarding 'Broilers': 1. They are fed with vitamin-rich supplementary feed. 2. Feathering and carcass quality are generally considered irrelevant. 3. Mortality avoidance is crucial. Which of the statements given above is/are correct?
In a composite fish culture system, which one of the following species functions as a bottom feeder?
Consider the following statements regarding 'Weeds': 1. Weeds are the primary cultivated plants in a field. 2. Their removal is essential during the early stages of crop growth. 3. Cyperus rotundus is an example of a weed. Which of the statements given above is/are correct?
Which one of the following is typically cultivated as a 'Rabi' crop in India?
In the context of plant breeding, what does 'Interspecific Hybridisation' refer to?
Which one of the following elements is classified as a macro-nutrient for plants?
What is the primary economic advantage of developing crop varieties with short maturity duration?
Which one of the following is NOT a desirable objective in crop variety improvement programmes?
In composite fish culture, which species is selected to utilize the food available in the surface zone?
Consider the following statements regarding 'Apis cerana indica': 1. It is commonly known as the Indian bee. 2. It is an imported exotic variety used for commercial honey production. 3. It has a higher honey collection capacity than the Italian bee. Which of the statements given above is/are correct?
Which one of the following crops is primarily cultivated as fodder for livestock?
Which statement correctly describes the characteristics of organic manure?
Which one of the following is classified as a micronutrient required for plant growth?
Consider the following statements regarding 'Poultry Diseases': 1. They can be caused by viruses, bacteria, and fungi. 2. Nutritional deficiencies have no impact on the occurrence of diseases in poultry. 3. Vaccination is an effective method for preventing infectious diseases. Which of the statements given above is/are correct?
In the context of animal husbandry, what is the primary characteristic of 'Roughage' feed?
What distinguishes 'Concentrates' from 'Roughage' in cattle feed?
Consider the following statements regarding 'Storage of Grains': 1. Cleaning of produce before storage is generally discouraged. 2. Drying the produce in sunlight and then in shade is recommended. 3. Fumigation is strictly avoided as it destroys the nutritional value of grains. Which of the statements given above is/are correct?