Asexual reproduction involves a single parent to produce offsprings without the formation of gametes. It occurs by the following ways: Fission, Budding, Fragmentation, Spore formation and Regeneration. In one of the methods like regeneration, Planaria A is cut horizontally into three pieces - L, M and N and Planaria B is cut vertically into two equal halves - O and P.
(a) Which of the cut pieces of the two Planaria could regenerate to form a complete organism?
(b) Give an example of another organism which follows the same mode of reproduction as Planaria.
(c) What is the meaning of 'development' in regeneration?
OR
(c) Differentiate between regeneration and fragmentation.
Asexual reproduction involves a single parent to produce offsprings without the formation of gametes. It occurs by the following ways: Fission, Budding, Fragmentation, Spore formation and Regeneration. In one of the methods like regeneration, Planaria A is cut horizontally into three pieces - L, M and N and Planaria B is cut vertically into two equal halves - O and P.
(a) Which of the cut pieces of the two Planaria could regenerate to form a complete organism?
(b) Give an example of another organism which follows the same mode of reproduction as Planaria.
(c) What is the meaning of 'development' in regeneration?
OR
(c) Differentiate between regeneration and fragmentation.
Official answer
The cut pieces of Planaria A (L, M, N) and Planaria B (O, P) can regenerate to form a complete organism.
Marking scheme
- 1.L
- 2.M
- 3.N
- 4.O
- 5.P
Hint
Planaria is a type of flatworm that has the ability to regenerate its body parts.
Quick oral answer
Regeneration is a process by which an organism can replace or repair damaged or missing body parts. In Planaria, this process involves the proliferation of stem cells, which can differentiate into different cell types to form new tissues and organs.
Common mistakes
- 1.Thinking that only one piece can regenerate
- 2.Not considering the ability of Planaria to regenerate
Analysis and explanation
Regeneration is a process by which an organism can replace or repair damaged or missing body parts. In Planaria, this process involves the proliferation of stem cells, which can differentiate into different cell types to form new tissues and organs.
Interesting facts
Planaria can regenerate its entire body from a small piece of tissue
Regeneration is an important mechanism for survival in many organisms
Question details
Q38 of 39 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2024
- Section
- Section E
- Marks
- 4
- Chapter
- How do Organisms Reproduce?
- Topic
- Asexual Reproduction
- Bloom's level
- Knowledge
- Syllabus topic
- Modes of Reproduction
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2024?
This question carries 4 marks in the CBSE Class 10 Science 2024 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 "Asexual Reproduction" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2024 paper?
This question appears in Section E in the CBSE Class 10 Science 2024 paper.