Questions answers Reproduction class 10

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Important Questions:

Very Short Answer Type Questions:

  1. Which scientist is called the Father of Genetics?
  2. What was the topic of research for Mendel?
  3. What is monohybrid cross?
  4. During monohybrid cross by Mendel, was the ratio of tall plants to short plants in an F1 generation?
  5. What is phenotype?
  6. In a human male, which combination of chromosomes is present in the 23rd pair?
  7. What is prenatal sex determination test?

Fill in the blanks:

  1. Mendel selected …………..plants for his study.
  2. A ……….trait does not get expressed in F1 generation.
  3. The ………………trait gets expressed in most of the plants of F2 generation.
  4. ………………..is the biological name of a pea.
  5. The first law of Mendel is also called the law of ……………..
  6. A …………..sends a particular code for making a particular protein.

Write True/False for the following:

  1. Mendel’s discovery was rejected by his contemporary scientists.
  2. Darwin worked on the same topic as Mendel.
  3. Pea is an annual plant.
  4. Tallness is always a dominant trait than shortness.
  5. Any colour of flower can be a dominant trait.
  6. A woman is responsible for the gender of her child.
  7. The population of girls is less than that of boys in India.

Short Answer Type Questions:

  1. What is the Law of segregation?
  2. What is the difference between genotype and phenotype?
  3. A true-breeding plant with purple flower is crossed with a true breeding plant with a white flower. Make the Pinette square to show the progenies in an F2 generation if plants of F1 generation are allowed to self-pollinate.

Long Answer Type Questions:

  1. What is monohybrid cross? Explain the experiment by Mendel to show the results of a monohybrid cross.
  2. What is dihybrid cross? What happens in F1 and F2 generation when plants producing Round green (RRyy) seeds are crossed with Wrinkled Yellow (rrYY) seeds. Make a Punnett Square show the result in an F2 generation.

 

Multiple Choice Questions

  1. Who is called the Father of Genetics?
  • a. Mendel
  • b. Hugo de Vries
  • c. Charles Darwin
  • d. Lamarck
  1. If a plant producing red flowers is crossed with another plant producing white flowers, and the red colour is dominant then how many plants of F1 generation would produce red flowers?
  • a. 25%
  • b. 50%
  • c. 80%
  • d. 100%
  1. If a brown sheep mates with white sheep and brown colour is the dominant trait then how many sheep in the F2 generation shall have a brown coat?
  • a. 25%
  • b. 50%
  • c. 75%
  • d. 100%
  1. How many copies of the gene for a particular trait are present in a germ cell.

a. One

b. Two

c. Four

d. Eight

  1. A cat has white fur and blue eyes. Which of the following is true about the manifestation of fur colour and eye colour in subsequent generations?
  • The cat with white fur will always have blue eyes
  • A cat with white fur will never have blue eyes
  • The cat with white fur may or may not have blue eyes
  • A cat with white fur will always have hazel eyes

Brainstorming Session

  1. What do you understand by pure breeding plants?
  2. A man having blood group A marries a girl with blood group O and their daughter’s blood group is O. Is this information enough to tell you which of the traits – the blood group A or O – is dominant? Why or why not? (NCERT)

Class 10 Science Home

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Chemical Reactions and Equations:

Types of Chemical Reaction:

Acids, Bases and Salts:

Common Properties of Acid and Base:

Metals and Non-metals:

Carbon and its Compounds:

Periodic Classification of Elements:

Life processes:

Control and co-ordination in animals and plants:

Reproduction:

Heredity and evolution: 

Conservation of natural resources:

How do Organism Reproduce

Electricity:

Magnetic effects of current:

Sources of energy:

Light

Human’s Eye and Colourful World