- Apiculture is the practice of managing:
a) Fish farming
b) Dairy production
c) Honeybee colonies
d) Silkworm breeding
Answer: c) Honeybee colonies
Explanation:
Apiculture refers to the management and cultivation of honeybee colonies to produce honey and other bee-related products like wax. It also plays a significant role in pollination.
- Which of the following is an advantage of using biofertilizers over chemical fertilizers?
a) They increase soil salinity
b) They are environmentally friendly
c) They require more water
d) They have a quick action
Answer: b) They are environmentally friendly
Explanation:
Biofertilizers are eco-friendly as they enrich the soil with nutrients naturally without causing pollution or harm to the environment. Unlike chemical fertilizers, they do not lead to soil degradation or water contamination.
- Which of the following is used for artificial selection in animals to improve traits?
a) Somatic hybridization
b) Cross-breeding
c) Cloning
d) Genetic drift
Answer: b) Cross-breeding
Explanation:
Cross-breeding is the process of mating two genetically different organisms, typically of the same species, to produce offspring with desirable traits. This method is widely used in animal husbandry for improving livestock characteristics.
- The method used to conserve the endangered plant species through tissue culture is known as:
a) Micropropagation
b) Hybridization
c) In-situ conservation
d) Genetic engineering
Answer: a) Micropropagation
Explanation:
Micropropagation is a tissue culture technique used to produce a large number of plants in vitro from a small tissue sample. This method is essential for conserving endangered plant species by rapidly multiplying their population.
- The ‘Blue Revolution’ is related to the increase in production of:
a) Poultry
b) Dairy
c) Marine products
d) Wool
Answer: c) Marine products
Explanation:
The Blue Revolution refers to the significant increase in the production of aquatic organisms, such as fish and other marine products, through aquaculture techniques.
- Which of the following crops is cultivated through sericulture?
a) Cotton
b) Mulberry
c) Maize
d) Wheat
Answer: b) Mulberry
Explanation:
Sericulture involves the rearing of silkworms for silk production. Mulberry leaves are the primary food for silkworms, making mulberry cultivation a key aspect of sericulture.
- Which of the following terms refers to the cross-breeding of two different plant species?
a) Hybridization
b) Mutation breeding
c) Clonal selection
d) Micropropagation
Answer: a) Hybridization
Explanation:
Hybridization is the process of crossing two genetically distinct plants to produce hybrids that exhibit traits from both parent plants. It is used to improve crop varieties by combining desirable characteristics.
- Which of the following is a bio-control agent used to manage pests in crops?
a) Bacillus thuringiensis (Bt)
b) Rhizobium
c) Cyanobacteria
d) Aspergillus
Answer: a) Bacillus thuringiensis (Bt)
Explanation:
Bacillus thuringiensis (Bt) is a bacterium that produces toxins harmful to insects, making it an effective bio-control agent in managing pest populations in crops. It is widely used in organic farming and integrated pest management.
- The scientific method of producing large quantities of disease-free plants using tissue culture is called:
a) Somatic hybridization
b) Micropropagation
c) Grafting
d) Apomixis
Answer: b) Micropropagation
Explanation:
Micropropagation is a technique used in tissue culture to propagate large numbers of genetically identical and disease-free plants. It involves growing plants from small tissue samples in a controlled, sterile environment.
- Which one of the following is a commonly used fungal bio-control agent for controlling plant pathogens?
a) Trichoderma
b) Rhizobium
c) Agrobacterium
d) Nostoc
Answer: a) Trichoderma
Explanation:
Trichoderma is a genus of fungi known for its ability to control plant pathogens, especially soil-borne fungi, by producing enzymes that break down the cell walls of harmful fungi. It is widely used as a bio-control agent in agriculture.
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