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Practice MCQ Questions and answers on Biology-GK

Learn and practice General Knowledge questions and answers on Biology with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-8 section-7

Each section contains 100 MCQs on Biology .
71
Which one of the following is a rich source of iron?
Discuss
Answer & Solution
Answer: Option D
Solution:
Spinach is a rich source of iron.
72
The vitamin that is destroyed on heating is
Discuss
Answer & Solution
Answer: Option B
Solution:
Vitamin C is a water-soluble and temperature-sensitive vitamin, so is easily degraded during cooking, and elevated temperatures and long cooking times have been found to cause particularly severe losses of vitamin C [12].
73
Which among the following is a vitamin?
Discuss
Answer & Solution
Answer: Option B
Solution:
Follic acid is a vitamin.
74
They play key roles in the contraction of muscles,digestion of food and clotting of blood.
Discuss
Answer & Solution
Answer: Option C
Solution:
Proteins play key roles in the contraction of muscles,digestion of food and clotting of blood.
75
Which one of the following organisms is dependent on saprophytic mode of nutrition?
Discuss
Answer & Solution
Answer: Option A
Solution:
Saprophytic fungi feed on dead plant and animal remains. Many are extremely beneficial, breaking down this organic material into humus, minerals and nutrients that can be utilised by plants. Agaricus is one among them.
76
Deficiency of which of the following causes non-clotting of blood?
Discuss
Answer & Solution
Answer: Option B
Solution:
Deficiency of vitamin K causes non-clotting of blood.
77
Organisms need nutrients in order to
Discuss
Answer & Solution
Answer: Option A
Solution:
They are necessary to the lives of people, plants, animals, and all other organisms. Nutrients help break down food to give organisms energy. They are used in every process of an organism's body. Some of the processes are growth (building cells), repair (healing a wound), and maintaining life (breathing).
78
Sugar is a component of which of the following?
Discuss
Answer & Solution
Answer: Option C
Solution:
Sugar is a component of carbohydrates.
79
The main protein found in milk is ________
Discuss
Answer & Solution
Answer: Option D
Solution:
Casein and whey protein are the major proteins of milk.
80
Which one of the following vitamins is known as the anti sterile factor?
Discuss
Answer & Solution
Answer: Option B
Solution:
Riboflavin is known as the anti sterile factor.