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Strategies for Enhancement in Food Production · Question 41

AIPMT 2006MCQEasy📈 Topic in 0% papers+4−1
1

In Maize, hybrid vigour is exploited by-

  1. Crossing of two inbred parental lines
  2. Inducing mutations
  3. Harvesting seeds from the most productive plants
  4. Bombarding the protoplast with DNA

Answer

(1) Crossing of two inbred parental lines

Solution

Hybrid vigour (heterosis) is the superiority of the F1 hybrid over its parents.

In maize it is exploited by first developing inbred (pure) lines and then crossing two selected inbred parental lines to produce hybrid seed.

Answer: (1)

Out of syllabusAIPMT 2006

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2

In order to obtain virus-free plants through tissue culture the best method is-

  1. Anther culture
  2. Protoplast culture
  3. Meristem culture
  4. Embryo rescue
Out of syllabusAIPMT 2006
3

Triticale, the first man-made cereal crop, has been obtained by crossing wheat with

  1. Pearl millet
  2. Sugarcane
  3. Rye
  4. Barley
Out of syllabusAIPMT 2006
4

The world's highly prized wool yielding 'Pashmina' breed is -

  1. Sheep
  2. Goat-sheep cross
  3. Kashmir sheep-Afghan sheep cross
  4. Goat
AIPMT 2005
5

Three crops that contribute maximum to global food grain production are -

  1. Wheat, maize and sorghum
  2. Wheat, rice and barley
  3. Wheat, rice and maize
  4. Rice, maize and sorghum
Out of syllabusAIPMT 2005
6

Which of the following is generally used for induced mutagenesis in crop plants ?

  1. UV (260 nm)
  2. Alpha particles
  3. Gamma rays (from cobalt-60)
  4. X-rays
Out of syllabusAIPMT 2005
7

The name of Norman Borlaug is associated with-

  1. Blue Revolution
  2. Yellow Revolution
  3. Green Revolution
  4. White Revolution
Out of syllabusAIPMT 2005
8

The technique of obtaining large number of plantlets by tissue culture method is called –

  1. Macropropagation
  2. Organ culture
  3. Plantlet culture
  4. Micropropagation
Out of syllabusAIPMT 2004
9

India's wheat yield revolution in the 1960s was possible primarily due to :-

  1. Hybrid seeds
  2. Quantitative trait mutations
  3. Increased chlorophyll content
  4. Mutations resulting in plant height reduction
Out of syllabusAIPMT 2004
10

Cellular totipotency is demonstrated by :

  1. All eukaryotic cells
  2. Only gymnosperm cells
  3. Only bacterial cells
  4. All plant cells
AIPMT 2003
11

What is the reason of formation of embryoid from pollen grain in tissue culture medium ?

  1. Double fertilization
  2. Test tube culture
  3. Cellular totipotency
  4. Organogenesis
AIPMT 2002

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All NEET Botany chapters
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