set 6 MCQ Questions & Answers Detailed Explanation

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The following question based on physiology of plants, humans and animals topic of general science mcq

Questions : Bidirectional translocation of minerals takes place in

(a) Phloem

(b) Parenchyma

(c) Xylem

(d) Cambium

The correct answers to the above question in:

Answer: (a)

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Read more biology Based General Science Questions and Answers

Question : 1

Which part of human brain is concerned with the regulation of body temperature?

a) Cerebrum

b) Cerebellum

c) Hypothalamus

d) Medulla Oblongata

Answer: (c)

Question : 2

Bone matrix is rich in

a) Calcium and Potassium

b) Calcium and Phosphorus

c) Fluoride and Calcium

d) Phosphorus and Potassium

Answer: (b)

The matrix comprises the major constituents of bone. It has inorganic and organic parts. The inorganic part is mainly crystalline mineral salts and calcium, which are present in the form of hydroxyapatite.

The matrix is initially laid down as unmineralized osteoid. Mineralisation involves osteoblasts secreting vesicles containing alkaline phosphatase.

This cleaves the phosphate groups and acts as the foci for calcium and phosphate deposition.

Question : 3

In which part of a flower do both meiosis and fertilization occur?

a) Stigma

b) Anther

c) Ovule

d) Petal

Answer: (c)

Question : 4

Girth of stem increases due to

a) lateral meristem

b) apical meristem

c) intercalary meristem

d) vertical meristem

Answer: (a)

Question : 5

Elbow joint is an example of

a) gliding joint

b) hinge joint

c) ball and socket joint

d) pivot joint

Answer: (b)

The Elbow joint is an example of the hinge joint. The elbow is a hinge joint; it can open and close like a door.

The hinge joint allows angular movement in one plane only, increasing or decreasing the angle between the bones e.g. elbow joint, knee joint etc.

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