HSC Science (General) 11th Standard - Maharashtra State Board Question Bank Solutions

Answer the following question.

Small Intestine is very long and coiled. Even if we jump and run, why it does not get twisted? What can happen if it gets twisted?

Write down the explanation.

Explain the structure of tooth.

Write down the explanation.

Explain why human dentition is considered as thecodont, diphydont and heterodont.

Observe the diagram. This is the histological structure of the stomach. Identify and comment on the significance of the layer marked by an arrow.

Answer the following question.

Digestive action of pepsin comes to a stop when food reaches small intestine. Justify.

Write down the explanation.

Digestive enzymes are secreted at appropriate time in our body. How does it happen?

Find out pH maxima for salivary amylase, trypsin, nucleotidase and pepsin and place on the given pH scale.

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Causative agent of red tide is ______.

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Causative agent of red tide is ______.

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Select odd one out for Heterotrophic bacteria.

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Select odd one out for Heterotrophic bacteria.

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Paramoecium : Ciliated Protist Plasmodium : ____________

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Paramoecium : Ciliated Protist Plasmodium : ____________

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What are the salient features of monera?

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What are the salient features of monera?

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What will be the shape of bacillus and coccus type of bacteria?

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What will be the shape of bacillus and coccus type of bacteria?

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Why is binomial nomenclature important?

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Why is binomial nomenclature important?

Write short notes:

Useful and harmful bacteria