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Questions and Answers
What is the period between birth and natural death of an organism called?
What is the period between birth and natural death of an organism called?
What is the biological process of continuity of a race in which the grown up individuals give rise to offspring similar to them?
What is the biological process of continuity of a race in which the grown up individuals give rise to offspring similar to them?
What type of reproduction involves a single parent capable of producing offspring that are genetically and morphologically identical to the parent?
What type of reproduction involves a single parent capable of producing offspring that are genetically and morphologically identical to the parent?
Which process involves the division of the parent body into many daughter organisms?
Which process involves the division of the parent body into many daughter organisms?
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What is the only exception to the statement that no individual organism is immortal?
What is the only exception to the statement that no individual organism is immortal?
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In which type of binary fission does division occur along the transverse axis of the individual?
In which type of binary fission does division occur along the transverse axis of the individual?
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Which type of asexual reproduction involves the formation of a new plant from vegetative parts like root, stem, leaf, etc.?
Which type of asexual reproduction involves the formation of a new plant from vegetative parts like root, stem, leaf, etc.?
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What is the complex budded condition called in budding?
What is the complex budded condition called in budding?
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Which type of reproduction occurs by tiny, single-celled, thin-walled spores that form new individuals?
Which type of reproduction occurs by tiny, single-celled, thin-walled spores that form new individuals?
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What is the process in which the missing part of the organism is repaired by the proliferation of cells?
What is the process in which the missing part of the organism is repaired by the proliferation of cells?
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Study Notes
Life Cycle and Reproduction
- The period between birth and natural death of an organism is called the life cycle.
- The biological process of continuity of a race in which the grown-up individuals give rise to offspring similar to them is called reproduction.
Types of Reproduction
- Asexual reproduction involves a single parent capable of producing offspring that are genetically and morphologically identical to the parent.
- Binary fission is a type of asexual reproduction that involves the division of the parent body into many daughter organisms.
- In transverse binary fission, division occurs along the transverse axis of the individual.
Asexual Reproduction Methods
- Vegetative propagation is a type of asexual reproduction that involves the formation of a new plant from vegetative parts like root, stem, leaf, etc.
- Budding is a type of asexual reproduction in which a new organism grows from a small outgrowth on the parent organism, and the complex budded condition is called a zooid.
- Sporulation is a type of asexual reproduction that occurs by tiny, single-celled, thin-walled spores that form new individuals.
Exceptions and Repair
- The only exception to the statement that no individual organism is immortal is the Turritopsis dohrnii, also known as the "immortal jellyfish", which can transform its body into a younger state through a process called transdifferentiation.
- Regeneration is the process in which the missing part of the organism is repaired by the proliferation of cells.
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Description
Explore NCERT solutions and CBSE notes for Class 12 Biology, specifically focusing on the topic of Reproduction in Organisms. Learn about the lifespan of organisms and other related concepts.
