1 |
Which of he following terms is not a category for biological classification?
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Kingdom <br>
Order <br>
Phylum <br>
Composition <br>
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2 |
A group of cells that work together to perform a function id called what?
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cell system <br>
organ system <br>
Organ <br>
Tissue <br>
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3 |
Biochemical origin of life was discovered by
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Haidane <br>
Muller <br>
Oparin <br>
Darwin <br>
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4 |
When the earth was formed it had an atmosphere with:
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Hydrogen, Oxygen and Nitrogen <br>
Water vapour, Hydrogen and oxygen <br>
Oxygen carbondioxide and nitrogen<br>
water vapour, ammonia and methane <br>
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5 |
The first sign of life made its appearance on the earth about:
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1 million years ago <br>
500 million years ago <br>
1 billion or 100milllion year ago <br>
3 billion years ago <br>
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6 |
Erythrocytes, leucocytes and platelets are collectively constituted nearly how much percent of the blood?
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25 per cent <br>
35 per cent <br>
45 per cent <br>
65 per cent <br>
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7 |
Red blood cells (RBC) are also known as:
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Erythrocytes <br>
Thrombocytes <br>
Leucocytes <br>
None of these <br>
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8 |
Whit blood cells are also known as:
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Leucocytes <br>
Trombocytes <br>
Erythrocytes <br>
None of these <br>
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9 |
Which type of cells has no nucleus?
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Red blood cells <br>
Nerve cells <br>
White blood cells <br>
None of these <br>
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10 |
What is the smallest unit of life?
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Cell <br>
Atom <br>
Virus <br>
a & b<br>
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