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How many arteries are there in an umbilical cord?

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Important Questions on Biology

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In a hybrid cross of round, green and shrunken yellow seeds, the number of round and yellow seeds are? 
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_____ tissue is made from dead cells:

 

 

 

 

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Male germ cells are produced in the _____:
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Which of the following is not a constituent of Phloem?
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Physical structure of an adult human being is based on _____.
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Rings of _____ are present in the throat to ensure that the air passage does not collapse.
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The development of infant in mother’s body in case of man takes place in about _____ months:
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Which acid is produced in the stomach of human beings?

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Between small and large human intestine which one is longer?

1. Small intestine
2. Large intestine
3. Both are equal in length
4. Depends on male or female

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What is the basis for classifying various plant tissues as meristematic and permanent tissue?
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Which among the following forms a common passage for both the sperms and urine in human males?
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Identify the figures given below marked as A, B, C, and D.

Question Image

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"All the plants and animals are composed of cells and the cell is the basic unit of life". The given statement is for which of the following theories?
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Ring present in the neck region is _____:
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Which branch of medicine deals with disorders related with heart?

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In the plants of Pteridophyta class, there is no _____:

 
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 The process by which plants can absorb water from the soil is called?
(A) Osmosis
(B) Diffusion
(C) Reverse osmosis
(D) Capillarity

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The _____ cells are loosely packed so that large intercellular spaces are found.
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Human nails are made up of:

1. Pigment
2. Elastin
3. Albumin
4. Keratin

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General Science>General Science>Biology>Human Circulatory System

Which of the following has no role in blood clotting?