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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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What is coacervate?

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

Describe the Urey and Miller experiment.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Observe the graph and select the correct option:

[15] Biodiversity, Conservation and Environmental Issues
Chapter: [15] Biodiversity, Conservation and Environmental Issues
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Short answer type question

Tropical regions exhibit species richness as compared to polar regions. Justify.

[15] Biodiversity, Conservation and Environmental Issues
Chapter: [15] Biodiversity, Conservation and Environmental Issues
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Choose the correct alternative.

_______ wave in ECG represent atrial depolarization.

[8] Respiration and Circulation
Chapter: [8] Respiration and Circulation
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Very short answer question.

Why does trachea have ‘C’ shaped rings of cartilage?

[8] Respiration and Circulation
Chapter: [8] Respiration and Circulation
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Very short answer question.

Name the organ which prevents the following the entry of food into the trachea while eating.

[8] Respiration and Circulation
Chapter: [8] Respiration and Circulation
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Planaria shows ______ type of nervous system.

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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Alveoli provide the surface area for exchange of ______.

[8] Respiration and Circulation
Chapter: [8] Respiration and Circulation
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Name the cartilage which divides the nasal cavity into right and left nasal chambers.

[8] Respiration and Circulation
Chapter: [8] Respiration and Circulation
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Give the function of epiglottis.

[8] Respiration and Circulation
Chapter: [8] Respiration and Circulation
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Lesser variation in biomass production over a period of time is called ______.

[15] Biodiversity, Conservation and Environmental Issues
Chapter: [15] Biodiversity, Conservation and Environmental Issues
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Describe the term Niche.

[13] Organisms and Populations
Chapter: [13] Organisms and Populations
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The pH of nutrient medium for plant tissue culture is in the range of ______.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Rivet Popper Hypothesis is an analogy to explain the significance of ______.

[15] Biodiversity, Conservation and Environmental Issues
Chapter: [15] Biodiversity, Conservation and Environmental Issues
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Write a short note on callus culture.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Write a short note on suspension culture.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Give importance of coconut milk in tissue culture.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Who observed that within a region, species richness increased with increasing explored area, to a certain limit?

[15] Biodiversity, Conservation and Environmental Issues
Chapter: [15] Biodiversity, Conservation and Environmental Issues
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What is Habencular commissure?

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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