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HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Biology

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Biology
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Give the main features of mutation theory.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
Concept: undefined >> undefined

Give the name, type and origin of the following cranial nerve:

Number-II

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
Concept: undefined >> undefined

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Give the name, type and origin of the following cranial nerve:

Number-IV

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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Give the name, type and origin of the following cranial nerve:

Number-IX

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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Identify ‘A’ in the given graph of population growth:

[13] Organisms and Populations
Chapter: [13] Organisms and Populations
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Differentiate between sympathetic and parasympathetic nervous system with reference to the following:

  1. Pre and post-ganglionic nerve fibres
  2. Effect on heartbeat
[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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Give reason – All spinal nerves are of mixed type.

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
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Write the names of any four motor cranial nerves with their appropriate serial number.

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
Concept: undefined >> undefined

Match list I with list II

  List I   List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome loses from diploid iii) trisomy
D.  Two individual chromosomes lose from diploid iv)  double monosomy
[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Draw flow chart of Central Dogma.

[4] Molecular Basis of Inheritance
Chapter: [4] Molecular Basis of Inheritance
Concept: undefined >> undefined

Write name, type and origin of following cranial nerve:

Number III

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
Concept: undefined >> undefined

Write name, type and origin of following cranial nerve.

Number VI

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
Concept: undefined >> undefined

Write name, type and origin of following cranial nerve:

Number X

[9] Control and Co-ordination
Chapter: [9] Control and Co-ordination
Concept: undefined >> undefined

What is meant by the polarity of genetic code ?

[4] Molecular Basis of Inheritance
Chapter: [4] Molecular Basis of Inheritance
Concept: undefined >> undefined

Explain the following term with reference to ecological succession.

Seral stages

[14] Ecosystems and Energy Flow
Chapter: [14] Ecosystems and Energy Flow
Concept: undefined >> undefined

Explain the following term with reference to ecological succession :

Pioneers

[14] Ecosystems and Energy Flow
Chapter: [14] Ecosystems and Energy Flow
Concept: undefined >> undefined

Explain the following term with reference to ecological succession.

Hydrosere

[14] Ecosystems and Energy Flow
Chapter: [14] Ecosystems and Energy Flow
Concept: undefined >> undefined

Which one is the most accurate definition of gross primary productivity?

[14] Ecosystems and Energy Flow
Chapter: [14] Ecosystems and Energy Flow
Concept: undefined >> undefined

Name the first hormone that was discovered in plant and its precursor.

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

If the base sequence in DNA is 5' AAAA 3', then the base sequence in nillNA is______.

[4] Molecular Basis of Inheritance
Chapter: [4] Molecular Basis of Inheritance
Concept: undefined >> undefined
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