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State PSC Current Affairs — practice questions — page 3

Explore 180 free Current Affairs questions in State PSC Science. Open each question or exercise to read its content, reference answers and available explanation.

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Current Affairs questions and exercises with answers

Showing questions 61–90 of 180.

India and China hold more than what share of the world's livestock population?Read the answer and worked solution →Mating closely related animals of the same breed for 4 to 6 generations is:Read the answer and worked solution →Continued close inbreeding reduces fertility and productivity, a problem called:Read the answer and worked solution →Hisardale, a new sheep breed developed in Punjab, is a cross of Bikaneri ewes and:Read the answer and worked solution →In MOET, a hormone with FSH-like activity makes a cow produce how many eggs per cycle?Read the answer and worked solution →The most common honeybee species reared in India is:Read the answer and worked solution →Hilsa, sardines, mackerel and pomfrets are examples of:Read the answer and worked solution →Recorded evidence of plant breeding dates back to:Read the answer and worked solution →The entire collection of plants or seeds having all diverse alleles for all genes in a crop is its:Read the answer and worked solution →Agriculture accounts for about what share of India's GDP and employs nearly what share of the population?Read the answer and worked solution →Between 1960 and 2000, wheat production rose from 11 million tonnes to:Read the answer and worked solution →Semi-dwarf wheat was developed in Mexico by Nobel laureate:Read the answer and worked solution →Sonalika and Kalyan Sona, introduced in 1963, are high-yielding varieties of:Read the answer and worked solution →Semi-dwarf rice varieties in India were derived from IR-8, developed at:Read the answer and worked solution →Jaya and Ratna are better-yielding semi-dwarf varieties of:Read the answer and worked solution →Saccharum barberi of north India was crossed with which south Indian species to get better sugar cane?Read the answer and worked solution →Resistance to yellow mosaic virus in bhindi from a wild species gave the variety:Read the answer and worked solution →Breeding crops with higher vitamins, minerals, protein or healthier fats is called:Read the answer and worked solution →Producing 1 kg of meat by animal farming takes how much grain?Read the answer and worked solution →Spirulina, grown on waste water and molasses as food rich in protein, is a:Read the answer and worked solution →The capacity to generate a whole plant from any cell or explant is:Read the answer and worked solution →Virus-free plants can be obtained by culturing which part of an infected plant?Read the answer and worked solution →Catch the wheat varietiesRead the answer and worked solution →Pop the rice wordsRead the answer and worked solution →Run the varietiesRead the answer and worked solution →Slice the food production wordsRead the answer and worked solution →Animal or plantRead the answer and worked solution →Sort the crop diseasesRead the answer and worked solution →Type the numberRead the answer and worked solution →Food production bingoRead the answer and worked solution →

Worked practice questions

India and China hold more than what share of the world's livestock population?

  1. 70 per cent
  2. 25 per cent
  3. 50 per cent
  4. 90 per cent
Show answer and solution

Correct answer: A. 70 per cent

1. Yet their farm produce share is small. 2. They hold over 70 per cent of livestock. 3. Productivity per animal is low. _Source: syllabus Biology, Chapter 9, Strategies for Enhancement in Food Production._

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Mating closely related animals of the same breed for 4 to 6 generations is:

  1. Hybridisation
  2. Inbreeding
  3. Out-crossing
  4. Cross-breeding
Show answer and solution

Correct answer: B. Inbreeding

1. It increases homozygosity. 2. This is inbreeding. 3. It helps evolve a pureline. _Source: syllabus Biology, Chapter 9, Strategies for Enhancement in Food Production._

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Continued close inbreeding reduces fertility and productivity, a problem called:

  1. Inbreeding depression
  2. Loss of hybrid vigour
  3. Outbreeding depression
  4. Random genetic drift
Show answer and solution

Correct answer: A. Inbreeding depression

1. Harmful recessive genes get exposed. 2. The decline is inbreeding depression. 3. Mating with unrelated superior animals restores yield. _Source: syllabus Biology, Chapter 9, Strategies for Enhancement in Food Production._

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