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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-4 section-1

Each section contains 100 MCQs on Biology .
31
Out of proteins, lipids and carbohydrates present in a cell membrane, what is true?
Discuss
Answer & Solution
Answer: Option B
Solution:
Carbohydrates are minimum in a cell membrane.
32
Potato is a modified form (outgrowth) of:
Discuss
Answer & Solution
Answer: Option B
Solution:
Potato is a modified form (outgrowth) of stem.
33
Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?
Discuss
Answer & Solution
Answer: Option C
Solution:
Of the following taxonomic categories class is the most inclusive (i.e. is the highest in hierarchy).
34
Prothrombin which helps in clotting of blood is released by
Discuss
Answer & Solution
Answer: Option D
Solution:
Prothrombin is a plasma protein which is converted into thrombin in the presence of thromboplastin released by platelets at the site of injury. The thrombin then converts protein fibrinogen into insoluble fibrin and thus aids in blood clotting.
35
Myopia is connected with
Discuss
Answer & Solution
Answer: Option B
Solution:
Myopia is connected with eyes.
36
Most of the red, blue and purple colours of plants are due to a pigment called
Discuss
Answer & Solution
Answer: Option A
Solution:
Anthocyanin - A blue, violet, or red flavonoid pigment found in plants.
37
Plants developing in dry conditions are
Discuss
Answer & Solution
Answer: Option A
Solution:
Xerophytes are adapted to survive in hot deserts where there is very little water. Xerophytes are common in coastal areas and thrive in saline water.
38
Plants growing on sand are called as
Discuss
Answer & Solution
Answer: Option D
Solution:
Psammophytes are plants that preferentially grow in sand.
39
Our skin, when exposed to excess sunlight, becomes dark. This is because of our skin pigments called
Discuss
Answer & Solution
Answer: Option B
Solution:
Within the skin's epidermal (outer) layer are cells that contain the pigment melanin. Suntanning occurs because exposure to sunlight causes the skin to produce more melanin and to darken. The tan fades as these cells move toward the surface and are sloughed off.
40
Ramapithecus and Cro-Magnon man are considered
Discuss
Answer & Solution
Answer: Option A
Solution:
Ramapithecus and Cro-Magnon man are considered ancestors of modern man.