Please select a subject first
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Name the three important components of biodiversity.
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The species diversity of plants (22 per cent) is much less than that of animals (72 per cent). What could be the explanations to how animals achieved greater diversification?
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List all the wastes that you generate, at home, school or during your Trips to other places, could you very easily reduce? Which would be Difficult or rather impossible to reduce?
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Match the items given in columns A and B:
| Column ‘A’ | Column ‘B’ | ||
| (a) | Catalytic converter | (1) | Particulate matter |
| (b) | Electrostatic precipitator | (2) | Carbon monoxide and nitrogen oxides |
| (c) | Earmuffs | (3) | High noise level |
| (d) | Landfills | (4) | Solid wastes |
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What measures as an individual, you would take to reduce environmental pollution?
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Our government has intentionally imposed strict conditions for M.T.P. in our country. Justify giving a reason.
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What is amniocentesis and why there is a statutory ban on it?
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“India has greater ecosystem diversity than Norway.” Do you agree with the statement? Give reasons in support of your answer.
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Explain the effect on the characteristics of a river when urban sewage is discharged into it.
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Write the difference between genetic biodiversity and species biodiversity that exists at all the levels of biological organisation.
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What is joint forest management?
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How does a desert plant adapt to the dry, warmer environmental conditions ?
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Name the kind of diseases/disorders that are likely to occur in humans if
(i) mutation in the gene that codes for an enzyme phenyl alanine hydrolase occurs,
(ii) there is an extra copy of chromosome 21,
(iii) the karyotype is XXY.
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Mention any one symptom of the diseases/disorders named above.
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Explain one application of the following:
Amniocentesis
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Prepare a poster for the school program depicting the objectives of:
"Reproductive and Child Health Care Programme".
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Name the kind of diseases/disorders and any two symptoms that are likely to occur in humans if Mutation in the gene that codes for an enzyme phenylalanine hydroxylase occurs.
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Name the kind of diseases/disorders and any two symptoms that are likely to occur in humans if The karyotype is XXY
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The membranous cover of the ovum at ovulation is ______.
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Correct sequence in development is ______.
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