IGCSE Biology Paper-2: Specimen Questions with Answers 141 - 142 of 203

Question 141

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Question

MCQ▾

A man who was blood group A and a woman who was blood group B had four children, each with a different blood group A, B, AB and O.

Which type of genotype would be expected?

Choices

Choice (4)
a.
b.
c.
d.None of the above

Answer

b.

Explanation

Type of genotype would be expectedType of genotype would be expected
i
blood group AB blood group B
iblood group A iiblood group O
Type of genotype would be expected

Type of Genotype Would be Expected

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Question 142

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Question

MCQ▾

The graph shows world wheat production from 1960 to 2010.

The graph shows world wheat production from 1960 to 2010

The Graph Shows World Wheat Production from 1960 to 2010

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What has contributed to the changes shown in wheat production?

Choices

Choice (4)
a.Using Insecticides
b.Using Only Herbicides
c.Using Less Amount of Fertilizer
d.Using Selective Breeding Method

Answer

d.

Explanation

Advantages of Selective Breeding

  • It requires no company patent.
  • It allows for higher profit.
  • It can create new varieties of good crops.
  • It does not have any issue of safety.
  • It helps eliminate diseases.
  • It influences the production of food coming from plants in a positive way.

All the above factors lead to explosive increase of cereals production worldwide.