What is vegetative propagation ? Write two of its advantages.
What is vegetative propagation ? Write two of its advantages.
Official answer
Vegetative propagation is an asexual mode of reproduction in which new plants are developed from vegetative parts such as roots, stems, or leaves under appropriate conditions.
Two advantages of vegetative propagation are:
- Earlier Growth: Plants raised by this method can bear flowers and fruits much earlier than those produced from seeds.
- Propagation of Seedless Plants: It makes possible the growth of plants like banana, orange, rose, and jasmine that have lost the capacity to produce seeds.
Marking scheme
- 1.Definition of vegetative propagation (mentioning root, stem, or leaves) (1 mark)
- 2.Any two advantages (0.5 marks each) (1 mark)
Hint
Think about how plants like potatoes or Bryophyllum grow without seeds and why farmers prefer grafting for roses.
Quick oral answer
Vegetative propagation is a method where parts like stems or leaves grow into new plants. An advantage is that it allows us to grow seedless varieties like bananas.
Common mistakes
- 1.Confusing vegetative propagation with sexual reproduction.
- 2.Forgetting to mention that the offspring are genetically identical to the parent.
Analysis and explanation
According to the NCERT text (Section 7.2.5), vegetative propagation utilizes the plant's ability to regenerate from non-reproductive parts. This is highly beneficial for agriculture (layering/grafting) because it ensures that all offspring are genetically identical to the parent, preserving desirable traits. It also bypasses the long juvenile phase of seed-grown plants.
Interesting facts
Bryophyllum is unique because it produces 'adventitious' buds along its leaf margins that can fall off and grow into new plants independently.
Question details
Q10 of 41 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2011
- Section
- Section A
- Marks
- 2
- Type
- Short Answer
- Chapter
- How do Organisms Reproduce?
- Topic
- Vegetative Propagation
- Bloom's level
- Remembering
- Syllabus topic
- Asexual Reproduction
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2011?
This question carries 2 marks in the CBSE Class 10 Science 2011 examination.
Which chapter does this question come from in Science?
This question is from the chapter "How do Organisms Reproduce?" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Vegetative Propagation" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2011 paper?
This is a Short Answer question from Section A in the CBSE Class 10 Science 2011 paper.