Heredity and Evolution Important Questions | Gyan Spark

VSQ

Very Short Answer Questions (1–2 Marks)

1 What is heredity? 1 Mark

2 Define variation. 1 Mark

3 Name the scientist known as the father of genetics. 1 Mark

4 What is a gene? 1 Mark

5 Define genotype. 1 Mark

6 Define phenotype. 1 Mark

7 What is evolution? 1 Mark

8 What are fossils? 1 Mark

9 What is speciation? 1 Mark

10 Which chromosome combination represents a male in humans? 1 Mark

SAQ

Short Answer Questions (3–4 Marks)

1 Explain inherited and acquired characters with examples. 3 Marks

2 Why did Mendel select pea plants for his experiments? 3 Marks

3 Explain monohybrid cross. 3 Marks

4 State Mendel's law of dominance. 3 Marks

5 Explain Mendel's law of segregation. 3 Marks

6 Describe the mechanism of sex determination in humans. 4 Marks

7 What are homologous organs? Give examples. 4 Marks

8 What are analogous organs? Give examples. 4 Marks

9 Explain the importance of variation in evolution. 4 Marks

10 Describe the role of fossils in understanding evolution. 4 Marks

LAQ

Long Answer Questions (5 Marks)

1 Explain Mendel's experiments and conclusions. 5 Marks

2 Describe the evidences of evolution in detail. 5 Marks

3 Explain speciation and the factors responsible for it. 5 Marks

4 Differentiate between homologous and analogous organs. 5 Marks

5 Explain heredity and evolution and their relationship. 5 Marks

R/A

Reasoning / Application-Based Questions

1 Why are acquired characters not inherited?

2 Why is variation important for survival of species?

3 Why is the sex of the child determined by the father?

4 Why do homologous organs indicate common ancestry?

5 How do environmental factors influence evolution?

Master Heredity and Evolution for Board Exams

This comprehensive collection of important questions for Chapter 1: Heredity and Evolution covers all key concepts from Class 10 Biology curriculum. These questions are carefully categorized by mark distribution and question type to help students prepare effectively for CBSE, ICSE, and state board examinations.

Understanding heredity and evolution is crucial for building a strong foundation in genetics and biology. This chapter explains how traits are passed from parents to offspring (heredity) and how species change over time (evolution). Key topics include Mendel's experiments, genetic inheritance, variation, speciation, fossils as evidence of evolution, and human evolutionary history.

Practicing these questions will help students grasp complex concepts like monohybrid crosses, sex determination, homologous and analogous structures, and the role of environmental factors in evolution. Regular practice with these important questions will boost confidence and improve exam performance.

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