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HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Biology

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Biology
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Select and write the most appropriate answer from the given.

Which of the following hormones is responsible for regulating the blood sugar level in the human body? 

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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What is biogas?

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Multiple choice question.

In Hardy - Weinberg equation, the frequency of homozygous recessive individual is represented by:

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Very short answer question.

State the Hardy – Weinberg equilibrium.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Define photoperiodism.

[7] Plant Growth and Mineral Nutrition
Chapter: [7] Plant Growth and Mineral Nutrition
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What is short day plant? Give any two examples.

[7] Plant Growth and Mineral Nutrition
Chapter: [7] Plant Growth and Mineral Nutrition
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Long Answer Question:

Describe the types of plants on the basis of photoperiod required, with the help of suitable examples.

[7] Plant Growth and Mineral Nutrition
Chapter: [7] Plant Growth and Mineral Nutrition
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Give one role of hormone therapy.

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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Give names of two organisations which provide most commonly used models of biogas plants.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Mention any four benefits of biogas.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Write chemical reactions to represent Methanogenesis.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Describe the structure of a biogas plant.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Write a note on coagulation of blood.

[8] Respiration and Circulation
Chapter: [8] Respiration and Circulation
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Name the hormone secreted by Pars intermedia in lower vertebrates.

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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State properties of hormones.

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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Explain mechanism of hormone action through membrane receptor.

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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What are long-day plants (LDP)? Give two examples.

[7] Plant Growth and Mineral Nutrition
Chapter: [7] Plant Growth and Mineral Nutrition
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What is the composition of biogas?

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Explain Hardy-Weinberg's principle

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Given below function performed by plant hormone. Which hormone is responsible for the given action?

Induce flowering in LDP

[7] Plant Growth and Mineral Nutrition
Chapter: [7] Plant Growth and Mineral Nutrition
Concept: undefined >> undefined
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