Q1
The process by which living organisms produce young ones is called:
Areproduction
Brespiration
Cexcretion
Dnutrition
CBSEClass 6 (CBSE)ScienceCh 10 · Topic 2
Growth and Reproduction
Understanding how living organisms grow and produce offspring.
Core concept
Growth patterns differ between organisms — plants often continue growing throughout their life, while most animals grow rapidly when young and then stop at a certain adult size. Reproduction can occur in two broad ways: sexual reproduction, requiring two parents (as in most animals and flowering plants), and asexual reproduction, requiring only one parent (as seen in some plants that grow from cuttings, or simple organisms that split in two). Both growth and reproduction require energy, obtained through nutrition and respiration.
Exam highlight
Key diagram
- Show a growth sequence: seed to sapling to tree, or puppy to adult dog.
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Quick notes
• Growth is a permanent increase in size through cell division and enlargement.
• Reproduction produces new organisms of the same kind, continuing the species.
• Plants often grow throughout life; most animals grow rapidly when young, then stop.
• Reproduction can be sexual (two parents) or asexual (one parent).