Reproduction in Plants — Class 7 Science NCERT Solutions (Free)
Free step-by-step NCERT solutions for Class 7 Science chapter "Reproduction in Plants" — 8 important questions with detailed answers for CBSE board exam preparation.
TL;DR: Free step-by-step NCERT solutions for Class 7 Science chapter "Reproduction in Plants" — 8 important questions with detailed answers for CBSE board ex…
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Key Questions Covered:
- What is asexual reproduction in plants?
- Name three methods of asexual reproduction in plants.
- What is the difference between sexual and asexual reproduction?
- Define pollination and fertilization.
- What are the structures in a flower involved in reproduction?
- Explain the process of seed development after fertilization.
- + 2 more questions in the full chapter
Solutions Summary:
| Question | Status |
|---|---|
| What is asexual reproduction in plants? | ✓ Solved |
| Name three methods of asexual reproduction in plants. | ✓ Solved |
| What is the difference between sexual and asexual reprodu… | ✓ Solved |
| Define pollination and fertilization. | ✓ Solved |
| What are the structures in a flower involved in reproduct… | ✓ Solved |
| Explain the process of seed development after fertilization. | ✓ Solved |
Showing 6 of 8 questions
Q1: What is asexual reproduction in plants?
Asexual reproduction is a process of reproduction that does not involve fusion of gametes. In plants, a single parent produces offspring that are genetically identical to the parent. Examples: vegetative propagation through runners (grass), tubers (potato), bulbs (onion), fragmentation (liverwort).
Q2: Name three methods of asexual reproduction in plants.
Step 1: Vegetative propagation - reproduction through vegetative parts like runners, bulbs, tubers, fragmentation.
Step 2: Examples - Potato (tubers), Strawberry (runners), Onion (bulbs), Bryophyllum (leaf buds).
Step 3: All produce clones genetically identical to parent plant.
Q3: What is the difference between sexual and asexual reproduction?
Sexual reproduction: involves two parents, gamete fusion, produces genetically different offspring, slower process.
Asexual reproduction: involves one parent, no gamete fusion, produces genetically identical offspring (clones), faster process.
Example: Rose by cutting (asexual), Rose from seed (sexual).
Q4: Define pollination and fertilization.
Pollination: transfer of pollen from anther to stigma of a flower (same or different plant). Occurs through wind, water, insects, or animals.
Fertilization: fusion of male gamete (nucleus in pollen) with female gamete (nucleus in ovule) inside the ovary to form zygote.
Q5: What are the structures in a flower involved in reproduction?
Male parts: Stamen (anther + filament) - produces pollen.
Female parts: Pistil (stigma + style + ovary) - contains ovules.
Other: Sepals (protection), Petals (attraction), Nectary (attracts pollinators).
Reproductive organs = Stamen + Pistil.
Q6: Explain the process of seed development after fertilization.
Step 1: After fertilization, zygote develops into embryo.
Step 2: Ovule integuments form seed coat (protective layer).
Step 3: Ovary wall develops into fruit (protects seeds).
Step 4: Inside seed: embryo (radicle, plumule) + cotyledons (food storage).
Step 5: Mature seed can remain dormant until favorable conditions.
Showing 6 of 8 questions. Visit the full page for complete solutions.
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