NCERT Solutions for Science Chapter 8 Reproduction in Plants Class 7 - FREE PDF Download
In Chapter 8, Reproduction In Plants Class 7, students delve into the mechanisms of plant reproduction. This chapter discusses how plants propagate, ranging from the simplest methods like vegetative propagation to the more complex processes such as sexual reproduction. By studying the details of flower structure, pollination, fertilisation, and seed formation, students gain profound insights into the life cycle of plants. Reproduction In Plants Class 7 Questions And Answers helps students master the concepts presented in the chapter. Through NCERT Solutions for Class 7 Science, students can reinforce their understanding of plant reproduction mechanisms and clarify their doubts.
Table of Content
Download Vedantu's Class 7 Science Chapter 8 Question Answer PDF, revised to align with the Class 7 Science syllabus. Start your academic journey with Vedantu and pave your way towards academic excellence.
Quick Insights into Chapter 8 Reproduction in Plants Class 7 PDF
Class 7 Science Chapter 8 PDF provides insights into the diverse mechanisms of plant reproduction that ensure their survival.
Class 7 Science Chapter 8 explains plant reproduction's fundamental processes, including sexual and asexual modes, enabling students to understand plant life cycles.
Reproduction In Plants Class 7 Solutions explores the anatomy of flowers, explaining the structures involved in sexual reproduction in flowering plants, such as the stigma, style, ovary, and stamen.
Class 7 Science Chapter 8 PDF offers students a comprehensive understanding of how plants reproduce and disseminate offspring in their environment by exploring concepts like pollination, fertilisation, seed formation, and dispersal.
Reproduction In Plants Class 7 Solutions offers detailed answers to questions, facilitating comprehensive exam preparation and enhancing conceptual clarity.
Vedantu provides additional learning resources, including class notes, diagrams, and exemplar solutions, to reinforce understanding and ensure mastery of key botanical concepts.
1. Fill in the Blanks:
(a) Production of a new individual from the vegetative parts of the parent is called __________.
Ans: Vegetative propagation
(b) A flower may have either male or female reproductive parts. Such a flower is called ________.
Ans: Unisexual flowers
(c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as________.
Ans: Pollination
(d) The fusion of male and female gametes is termed as_________.
Ans: Fertilisation
(e) Seed dispersal takes place by means of _____, _____and______.
Ans: Wind, insect, water
2. Describe the different methods of asexual reproduction. Give examples.
Ans: Different methods of asexual reproduction are:
a. Vegetative Propagation: In the vegetative propagation method growth of new plants takes place from the stem, root, or leaf of the plant. Examples of plants showing vegetative reproduction are ginger, potatoes.
b. Fragmentation: In the fragmentation method, the body of plants divides into two or more than two fragments and these fragments grow to form independent plants. Example of a plant showing a fragmentation method is algae.
c. Budding: In the budding method small bulb projects out from the yeast cell known as the bud which grows and then disconnects from the plant to create a new organism. Examples showing the budding method are yeast, hydra.
d. Spore Formation: When the bread is present in the open air, the fungi present in the bread grow. This is known as spore formation. Examples showing spore formation are ferns, fungi.
3. Explain what you understand by sexual reproduction.
Ans: Sexual reproduction is a mode of reproduction in plants. In sexual reproduction male gametes and female gametes fuse together with each other to form a zygote which grows into a new plant/organism.
4. State the main difference between asexual and sexual reproduction.
Ans: The difference between asexual and sexual reproduction is shown below.
5. Sketch the reproductive parts of a flower.
Ans: The pistil is the female part of the flower which includes stigma, style and ovary. Inside the ovary, ovules are present. Stamen is the male part of the flower which contains anther and filament. The anther contains pollen.
6. Explain the difference between self-pollination and cross-pollination.
Ans: The difference between self-pollination and cross-pollination is shown below.
7. How does the process of fertilization take place in flowers?
Ans:
During pollination when the pollen grains reach the stigma of the flower, a pollen tube is generated where the pollen runs down through the style to the ovary.
The pollen grains then fertilize the ovary which leads to the formation of a zygote.
The formation of zygotes by the involvement of male and female gametes is known as fertilisation.
8. Describe the various ways by which seeds are dispersed.
Ans: The various ways by which seeds are dispersed are:
(a) Wind
(b) Water
(c) Insects
(d) Animals
(e) Birds
The seeds which are lighter in weight and smaller in size are taken by the wind. The seeds which can float are taken by water. Seeds with spines are taken by animals and birds.
9. Match items in Column I with those in Column II:
Ans:
10. Tick ( ) the correct answer:
(a) The reproductive part of a plant is the
(i) Leaf
(ii) Stem
(iii) Root
(iv) Flower
Ans: (iv) Flower
(b)The process of fusion of the male and female gametes is called
(i) Fertilisation
(ii) Pollination
(iii) Reproduction
(iv) Seed formation
Ans: (i) Fertilisation
(c) Mature ovary forms the
(i) Seed
(ii) Stamen
(iii) Pistil
(iv) Fruit
Ans: (iv) Fruit
(d) A spore-producing plant is
(i) Rose
(ii) Bread mould
(iii) Potato
(iv) Ginger
Ans: (ii) Bread mould
(e)Bryophyllum can reproduce by its
(i) Stem
(ii) Leaves
(iii) Root
(iv) Flowers
Ans: (ii) Leaves
Reproduction in Plants Class 7 Quick Overview of Detailed Structure of Topics
Reproduction in Plants Class 7 PDF - Important Points
Modes of Reproduction: Plants reproduce through both sexual and asexual modes. Sexual reproduction involves the fusion of male and female gametes, while asexual reproduction occurs without the involvement of gametes.
Asexual Reproduction: Asexual reproduction in plants involves the production of new individuals from vegetative parts like roots, stems, and leaves. Common methods of asexual reproduction include budding, fragmentation, and spore formation.
Budding: A form of asexual reproduction in which a new organism develops as an outgrowth, or bud, on the parent organism. Budding is commonly observed in organisms such as yeast, hydra, and some plants like Bryophyllum.
Fragmentation: Fragmentation is a method of asexual reproduction in which an organism breaks into fragments, each of which can grow into a new individual. This process is common in organisms like algae, fungi, and some plants.
Spore Formation: Spore formation is a type of asexual reproduction in which specialised reproductive cells called spores are produced by an organism. Spore formation is common in fungi, algae, mosses, ferns, and some bacteria.
Sexual Reproduction in Flowering Plants: Flowers are the reproductive organs of flowering plants. They contain both male (stamen) and female (pistil) reproductive parts. The male part produces pollen grains containing male gametes (sperm), while the female part contains ovules with female gametes (eggs).
Pollination: Pollination is the transfer of pollen grains from the anther to the stigma of a flower. It can occur through various agents like wind, water, animals (insects, birds, bats), or even self-pollination within the same flower.
Fertilisation: Fertilization is the fusion of a pollen grain with an ovule, forming a zygote. After fertilisation, the ovule develops into a seed containing the embryo plant.
Seed Formation and Dispersal: The ovule develops into a seed after fertilisation. Seeds are dispersed through various means, such as wind, water, animals, and gravity to ensure the spread of plants to new locations.
Advantages of Reproduction in Plants: Reproduction ensures the continuation of plant species and promotes genetic diversity. Asexual reproduction allows the rapid multiplication of plants with desirable traits, while sexual reproduction promotes genetic variation through the mixing of genetic material.
Benefits of Vedantu’s Class 7 Science Chapter 8 Reproduction in Plants Question Answer
Reproduction In Plants Class 7 Questions and Answers delve into the mechanisms of plant reproduction, covering topics such as sexual and asexual reproduction.
Class 7 Science Chapter 8 Reproduction In Plants Question Answer provides a comprehensive understanding of how plants propagate and ensure the continuation of their species.
Class 7 Science Chapter 8 Question Answer PDF offers detailed explanations of the modes of reproduction in plants and the role of flowers in sexual reproduction, making it easier for students to grasp the concepts effectively.
With clear explanations and illustrative diagrams, students can better visualise the different reproductive structures and understand their functions.
Class 7 Science Chapter 8 Question Answer discusses various aspects of plant reproduction, helping students comprehend the significance of pollination, fertilisation, and seed dispersal in the life cycle of plants.
Reproduction In Plants Class 7 Solutions is prepared to help students prepare for exams by offering practice questions and answers that enhance their problem-solving skills and boost their confidence.
Important Study Materials for Reproduction in Plants Class 7
Conclusion
Vedantu’s NCERT Solutions for Science Chapter 8, Reproduction in Plants Class 7, offers a vital tool for students to understand plant reproduction easily. It emphasises crucial aspects like the different methods of reproduction in plants, including sexual and asexual reproduction. Focus on understanding plant structures involved in reproduction, such as flowers and seeds. Previous year question papers typically include around 4-6 questions from this chapter, underlining its importance in exams. By utilising these solutions, students can grasp the concepts effectively, enhance their knowledge, and confidently tackle questions related to plant reproduction in their exams.
NCERT Solutions for Class 7 Science - Chapter-wise Link for FREE PDF
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FAQs on NCERT Solutions for Class 7 Science Chapter 8 Reproduction In Plants
1. What types of questions are answered in the NCERT Solutions for Class 7 Science Chapter 8, 'Reproduction in Plants'?
The NCERT Solutions for Class 7 Science Chapter 8 provide complete, step-by-step answers for all questions in the textbook exercise. This includes:
- Fill in the blanks
- Multiple-choice questions (MCQs)
- Match the following
- Short and long descriptive answer questions
Each solution is crafted to align with the CBSE 2025-26 curriculum guidelines.
2. How do the NCERT Solutions correctly explain the difference between self-pollination and cross-pollination?
The solutions clarify this by first defining each term and then often presenting the differences in a simple table. It explains that self-pollination involves the transfer of pollen to the stigma of the same flower, whereas cross-pollination is the transfer of pollen to the stigma of another flower of the same kind. This method helps students compare and remember the distinct mechanisms easily.
3. What is the correct method shown in the solutions for answering questions on asexual reproduction methods like budding or fragmentation?
The NCERT solutions demonstrate the correct method by first defining the specific type of asexual reproduction and then providing a mandatory example. For instance, when explaining budding, the answer describes the formation of a bud-like projection from the parent cell and cites yeast as an example. This 'definition plus example' approach is crucial for scoring full marks.
4. Why do the NCERT Solutions for Class 7 Science Chapter 8 emphasize drawing and labelling a diagram for the reproductive parts of a flower?
Drawing a labelled diagram is emphasized because it is a key requirement for questions on plant structures as per the CBSE pattern. A diagram visually demonstrates your understanding of the parts and their positions. The solutions show how to correctly draw and label the male part (stamen) and the female part (pistil), which helps secure higher marks than a purely text-based answer.
5. How do the solutions help in understanding the sequence of events from fertilisation to fruit formation?
The solutions explain this as a step-by-step process. They clarify that after fertilisation (the fusion of male and female gametes), the resulting zygote develops into an embryo. The ovule then develops into a seed, and the ovary matures and transforms into a fruit. By laying out this sequence, the solutions help students understand the entire post-fertilisation life cycle logically.
6. Beyond providing answers, how do these solutions clarify the role of dispersal agents like wind, water, and animals?
The solutions go beyond simple lists by linking each agent to the type of seed it disperses. For example, they explain that light, winged seeds (like those of maple) are adapted for wind dispersal, while seeds with fibrous or spongy outer coats (like coconut) are suited for water dispersal. This helps students understand the relationship between a seed's structure and its dispersal mechanism.
7. Are the methods and terminology used in these NCERT Solutions aligned with the 2025-26 academic session?
Yes, all explanations, definitions, and problem-solving methods in the NCERT Solutions for Class 7 Science Chapter 8 are fully updated and accurate as per the latest CBSE syllabus for the 2025-26 session. The answers are designed by experts to ensure students learn the precise terminology and concepts required for their exams.
