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HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Important Questions

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Describe modern man.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Human Evolution

Explain Geographical Isolation

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Theories of Biological Evolution >> Modern Synthetic Theory of Evolution

What is chromosomal aberration? Give any two types of aberrations found in the population.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Organic Evolution

Industrial melanism is one of the best example for ______.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Theories of Biological Evolution >> Modern Synthetic Theory of Evolution

Which event is represented by the above diagram, related to chromosomal aberrations?

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Theories of Biological Evolution >> Modern Synthetic Theory of Evolution

Enlist the characteristics of Neanderthal Man.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Human Evolution

The earliest geological time period among the following is______.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Geological Time Scale

Write short note on Neanderthal man.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Human Evolution

Write short note on Gene pool.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Theories of Biological Evolution >> Modern Synthetic Theory of Evolution

Give the main features of mutation theory.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Theories of Biological Evolution >> Mutation Theory

Mention the name of a sterile animal produced by intergeneric hybridisation.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Theories of Biological Evolution >> Modern Synthetic Theory of Evolution

Define the term:

Genetic drift

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Theories of Biological Evolution >> Modern Synthetic Theory of Evolution

What is a connecting link?

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Organic Evolution

Which fossil animal is considered as the connecting link between reptiles and birds? Give any one character of each class found in it.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Organic Evolution

What is reproductive isolation?

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Theories of Biological Evolution >> Modern Synthetic Theory of Evolution

Define the term Chromosomal aberrations.

Appears in 1 question paper
Chapter: [5] Origin and Evolution of Life
Concept: Theories of Biological Evolution >> Modern Synthetic Theory of Evolution

What is dark reaction in photosynthesis?

Appears in 1 question paper
Chapter: [6] Plant Water Relation
Concept: Structure of Stomatal Apparatus

Describe C3 Pathway.

Appears in 1 question paper
Chapter: [6] Plant Water Relation
Concept: Structure of Stomatal Apparatus

Very short answer question.

What is the symplast pathway?

Appears in 1 question paper
Chapter: [6] Plant Water Relation
Concept: Path of Water Across the Root

Answer the following question.

Explain the role of transpiration.

Appears in 1 question paper
Chapter: [6] Plant Water Relation
Concept: Structure of Stomatal Apparatus
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