1.
Some chemical elements are required in large amounts by the plants for their proper growth. These inorganic elements are called macronutrients or macroelements. Which of the following elements do not come under the category of macronutrients?(i) Phosphorous (ii) Manganese(iii) Magnesium (iv) Iron
Correct Answer
C. Both (ii) and (iv)
Explanation
The question asks for the elements that do not come under the category of macronutrients. Macronutrients are elements that are required in large amounts by plants for their proper growth. Phosphorous, magnesium, and iron are all macronutrients. However, manganese does not fall under the category of macronutrients. Therefore, the correct answer is "Both (ii) and (iv)."
2.
Which of the following is NOT a sustainable practice for improving food resources?
Correct Answer
C. Overfishing
Explanation
Overfishing depletes fish populations faster than they can reproduce, leading to a decline in biodiversity and potential ecosystem collapse. This is not a sustainable practice. Integrated pest management uses natural predators and minimal pesticides, reducing environmental harm. Organic farming avoids synthetic chemicals, promoting soil health and biodiversity. Crop rotation helps maintain soil fertility and reduces pest infestations, contributing to long-term sustainability.
3.
Among the following pick out the correct statement.(i) Hybridization means crossing between genetically dissimilar plants(ii) Cross between two varieties is called as inter specific hybridization(iii) Introducing the genes of desired characters into a plant gives genetically modified crop(iv) Cross between plants of two species is called as inter varietal hybridization
Correct Answer
A. (i) and (iii)
Explanation
Statement (i) is correct because hybridization refers to the crossing between genetically dissimilar plants to create offspring with desired traits.
Statement (iii) is correct because introducing the genes of desired characters into a plant is the process of genetically modifying the crop to express those desired traits.
4.
Weeds are the unwanted plants that grow along with the cultivated plants. How do they affect the crop plants?
Correct Answer
C. Competing for various resources of plants causing low availability of nutrients
Explanation
Weeds affect crop plants by competing for various resources such as water, sunlight, and nutrients. This competition results in a lower availability of nutrients for the crop plants, which can negatively impact their growth and productivity. Weeds can also crowd out the crop plants and dominate the area, further reducing their access to essential resources. Therefore, the correct answer is that weeds compete for various resources of plants, causing a low availability of nutrients.
5.
Fish is an important aquatic food which is rich in proteins. The act of capturing, preservation and utilization of fishes is called fish culture.Among the following statements choose the option which does not describe the benefit of fish culture?
Correct Answer
C. There is more mortality in the younger stages of the fishes
Explanation
Fish culture is a beneficial practice as it allows for a large number of fishes to be raised in a small area, making economically important desired fishes readily available. Additionally, through selective hybridization, the yield and quality of fishes can be improved. However, the statement "There is more mortality in the younger stages of the fishes" does not describe a benefit of fish culture. Instead, it highlights a potential drawback or challenge in fish culture, as higher mortality rates in younger stages can impact overall production and success.
6.
The National Dairy Development Board (NDDB) designed and implemented the world’s largest dairy development programme, called “Operation Flood”, which came out to be the reason behind White Revolution in India. Can you name the man who is known as the Father of White Revolution?
Correct Answer
D. Dr. V. Kurien
Explanation
Dr. V. Kurien is known as the Father of White Revolution because he played a crucial role in the success of Operation Flood, the world's largest dairy development program. He was the chairman of the National Dairy Development Board (NDDB) and under his leadership, India became the largest milk producer in the world. Dr. Kurien revolutionized the dairy industry by introducing cooperative models, modern technology, and empowering farmers. His efforts not only transformed the dairy sector but also uplifted the rural economy and improved the livelihoods of millions of farmers in India.
7.
There are present numerous exotic breeds of poultry which have been successfully acclimatized in India. One of the most popular exotic breeds of fowl in India, which produces long white eggs, has a very small body size, so needs less feed for its maintenance. Choose the right name for the breed with all these characteristics.
Correct Answer
B. White Leghorn
Explanation
The correct answer is White Leghorn. The description states that the breed produces long white eggs and has a small body size, requiring less feed for maintenance. The White Leghorn breed fits these characteristics, as they are known for their high egg production and small size.
8.
Growing different crops in the same field in a preplanned succession, to improve the quality and quantity of the crop yield and maintain the fertility of soil is known as:
Correct Answer
A. Crop rotation
Explanation
The practice of growing different crops in the same field in a preplanned succession to improve the quality and quantity of crop yield and maintain soil fertility is known as "crop rotation." Crop rotation is an agricultural technique where various crops are planted in a specific sequence over time to optimize soil health, minimize pests and diseases, and enhance overall crop production. It is a sustainable farming practice that has been used for centuries to manage soil nutrients and reduce the risk of soil degradation.
9.
Along with the indigenous breeds, the exotic varieties of honey bees are also widely used for commercial production of honey in India. The Italian bee, named Apis Mellifera is most commonly domesticated in India. Which of the following is not a reason for the preferential use of this breed?
Correct Answer
D. It has prolific queen with more swarming
Explanation
The Italian bee, Apis Mellifera, is preferred for commercial honey production in India because it is gentle in nature, has the ability to protect itself from enemies, and has good honey collection capacity. However, it is not preferred for its prolific queen with more swarming. This means that the Italian bee does not have a high tendency to form new colonies by swarming, which can be advantageous for commercial beekeepers who want to maintain stable and productive colonies.
10.
“Drones” in the honeybee colony are stingless and are unable to gather food. Their main role is to mate with queen bee and help in breeding.Drones are born out from:
Correct Answer
B. Unfertilized eggs
Explanation
Drones are male bees in the honeybee colony and they are born from unfertilized eggs. Unlike worker bees, which are born from fertilized eggs, drones do not have a father and therefore do not inherit any genetic material from a male bee. They are produced by the queen bee laying unfertilized eggs, which then develop into drones. Drones are stingless and do not gather food like worker bees. Their main purpose is to mate with the queen bee and assist in the breeding process.
11.
In order to obtain the good quality and quantity of yield in dairy and poultry farming which of the following management practices should be followed?(i) Proper housing facilities having hygienic conditions(ii) Preventing the entrance of sunlight into the cattle farms(iii) Prevention and control of diseases and pests(iv) Maintenance of proper temperature
Correct Answer
C. (i), (iii) and (iv)
Explanation
Proper housing facilities with hygienic conditions are important for maintaining the health and well-being of the animals, which ultimately leads to good quality and quantity of yield. Prevention and control of diseases and pests is also crucial in order to prevent any potential harm to the animals and their productivity. Maintenance of proper temperature is necessary to ensure the animals are comfortable and their physiological processes are not affected. Therefore, following management practices (i), (iii), and (iv) are necessary for obtaining good quality and quantity of yield in dairy and poultry farming.
12.
Find out the wrong statement from the following:
Correct Answer
D. None of these
Explanation
The correct answer is "None of these". This is because all the statements mentioned are correct. White revolution does aim to increase milk production, blue revolution aims to increase fish production, and sustainable agriculture focuses on increasing food production while maintaining environmental quality.
13.
Dairy animals suffer from various types of diseases, one of which are the infectious diseases. Infectious diseases are mainly caused by viruses and bacteria. These diseases are spread by contact from animal to animal. Identify which of the following are not the infectious diseases?(i) Ringworm (ii) Foot and mouth disease(iii) Salmonellosis (iv) Anaemia
Correct Answer
C. (i) and (iv)
Explanation
Ringworm and Anaemia are not infectious diseases. Ringworm is a fungal infection that affects the skin, hair, or nails, and is not caused by viruses or bacteria. Anaemia is a condition characterized by a deficiency of red blood cells or hemoglobin in the blood, and is not caused by infectious agents. On the other hand, Foot and mouth disease and Salmonellosis are both infectious diseases caused by viruses and bacteria, respectively, and can be spread from animal to animal.
14.
Ronit often used to go with his father to collect milk from the milk man. One day, the milk man told his father that he is going to purchase a Murrah breed buffalo as he is not able to fulfill the demand of his customers to supply good quality milk. Ronit asked his father about the Murrah buffalo. Among the following statements which might not be the answer by his father?
Correct Answer
C. It is a very popular exotic breed
Explanation
The question asks for a statement that might not be the answer given by Ronit's father when asked about the Murrah buffalo. The correct answer, "It is a very popular exotic breed," does not provide any information about the milk yield, quality, or body size of the buffalo. It simply states that the breed is popular and exotic.
15.
Which of the following is a fungus disease causing maximum deaths of poultry birds?
Correct Answer
D. Aspergillosis
Explanation
Aspergillosis is a fungal disease that commonly affects poultry birds and can cause high mortality rates. It is caused by the inhalation of spores from the Aspergillus fungus, which can contaminate feed or bedding materials. The fungus can grow in the respiratory system of birds, leading to respiratory distress, pneumonia, and death. Aspergillosis is known to be one of the major causes of death in poultry birds, making it the correct answer to the question.