How do organisms reproduce-science class 10th test

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How do organisms reproduce-science class 10th test

Here is a comprehensive test paper for Class 10 Science Chapter 7: “How Do Organisms Reproduce?” designed to assess in-depth knowledge, competency, and familiarity with previous examination trends, aligned with the latest CBSE 2024-25 syllabus.

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Section A: In-Depth Knowledge Questions

  1. Explain the process of sexual reproduction in flowering plants. Include the roles of pollination, fertilization, and seed formation in your answer.
  2. Describe the human male reproductive system. Discuss the structure and function of each part, emphasizing the role of hormones in regulating reproductive functions.
  3. Compare and contrast asexual and sexual reproduction. Discuss the advantages and disadvantages of each method concerning genetic variation and survival of species.

Section B: Competency-Based Questions

  1. A gardener wants to propagate a plant that does not produce viable seeds. Which method of reproduction should they use, and why?
  2. Analyze the impact of environmental factors on the reproductive health of humans. Discuss how lifestyle choices can influence reproductive functions.
  3. Evaluate the significance of DNA replication in reproduction. Explain how errors in DNA replication can affect offspring.

Section C: Previous Year Questions

  1. Name the method by which Spirogyra reproduces under favorable conditions. Is this method sexual or asexual?
  2. How does Plasmodium reproduce? Is this method sexual or asexual?
  3. List two functions of the ovary in the human female reproductive system.

Section D: NCERT Textbook Questions

  1. What is the role of the fallopian tubes in the female reproductive system? Explain how blockages in these tubes can affect fertility.
  2. Describe the process of binary fission in amoeba. Illustrate your answer with a labeled diagram.

Section E: Sample Paper Questions

  1. Define multiple fission. Give one example of an organism that reproduces by this method.
  2. Name the part of Bryophyllum where buds are produced for vegetative propagation.
  3. List two advantages of vegetative reproduction practiced in the case of an orange plant.

Section F: Case-Based Questions

  1. Case Study:

A farmer observes that a particular variety of potato plant in his field is yielding less produce over successive generations. Upon consultation, he learns that continuous vegetative propagation might be leading to the accumulation of diseases in the plants.

Questions:

a. Explain how vegetative propagation is carried out in potato plants.

b. Discuss the potential drawbacks of continuous vegetative propagation in crops.

c. Suggest alternative methods the farmer could use to maintain healthy crop yields.

  1. Case Study:

A biologist is studying a species of lizard that can reproduce both sexually and asexually. In environments with scarce resources, the lizard predominantly reproduces asexually, while in resource-rich environments, it switches to sexual reproduction.

Questions:

a. Define the terms ‘sexual reproduction’ and ‘asexual reproduction.’

b. Analyze why the lizard might prefer asexual reproduction in resource-scarce environments.

c. Discuss the advantages of switching to sexual reproduction in resource-rich environments.

This test paper integrates questions from various sources, including previous year papers and NCERT materials, to provide a thorough assessment of students’ understanding of the chapter.

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