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What are the two distinct phases in the life cycle of plants?
- a)Sporophytic and Haploid
- b)Diploid and Gametophytic
- c)Haploid Sporophytic and Diploid Gametophytic
- d)Diploid Sporophytic and Haploid Gametophytic
Correct answer is option 'D'. Can you explain this answer?
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What are the two distinct phases in the life cycle of plants?a)Sporoph...
Introduction to Plant Life Cycle
Plants undergo a complex life cycle characterized by two distinct phases, known as alternation of generations. This process involves the transition between the diploid sporophytic phase and the haploid gametophytic phase.
Sporophytic Phase (Diploid)
- The sporophytic phase is diploid, meaning it contains two sets of chromosomes (2n).
- In this stage, plants produce spores through a process called meiosis.
- These spores develop into the gametophyte generation, which is haploid (n).
- The sporophyte is the dominant form in most plants, particularly in vascular plants.
Gametophytic Phase (Haploid)
- The gametophyte phase is haploid, containing a single set of chromosomes (n).
- The haploid spores germinate and grow into gametophytes, which produce gametes (sperm and egg cells) through mitosis.
- Fertilization of the gametes results in the formation of a diploid zygote, which grows into a new sporophyte, completing the cycle.
Conclusion
The correct answer to the question is option D: Diploid Sporophytic and Haploid Gametophytic. This reflects the two alternating generations in the plant life cycle, where the sporophyte (diploid) produces haploid spores, which then develop into the gametophyte (haploid) that produces gametes. Understanding this cycle is crucial for comprehending plant reproduction and development, especially in the context of evolution and biodiversity.
Plants undergo a complex life cycle characterized by two distinct phases, known as alternation of generations. This process involves the transition between the diploid sporophytic phase and the haploid gametophytic phase.
Sporophytic Phase (Diploid)
- The sporophytic phase is diploid, meaning it contains two sets of chromosomes (2n).
- In this stage, plants produce spores through a process called meiosis.
- These spores develop into the gametophyte generation, which is haploid (n).
- The sporophyte is the dominant form in most plants, particularly in vascular plants.
Gametophytic Phase (Haploid)
- The gametophyte phase is haploid, containing a single set of chromosomes (n).
- The haploid spores germinate and grow into gametophytes, which produce gametes (sperm and egg cells) through mitosis.
- Fertilization of the gametes results in the formation of a diploid zygote, which grows into a new sporophyte, completing the cycle.
Conclusion
The correct answer to the question is option D: Diploid Sporophytic and Haploid Gametophytic. This reflects the two alternating generations in the plant life cycle, where the sporophyte (diploid) produces haploid spores, which then develop into the gametophyte (haploid) that produces gametes. Understanding this cycle is crucial for comprehending plant reproduction and development, especially in the context of evolution and biodiversity.
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What are the two distinct phases in the life cycle of plants?a)Sporoph...
Life cycle of plants has two distinct phases – the diploid sporophytic and the haploid gametophytic – that alternate with each other. The lengths of the haploid and diploid phases, and whether these phases are free– living or dependent on others, vary among different groups in plants. This phenomenon is called alternation of generation.
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What are the two distinct phases in the life cycle of plants?a)Sporophytic and Haploidb)Diploid and Gametophyticc)Haploid Sporophytic and Diploid Gametophyticd)Diploid Sporophytic and Haploid GametophyticCorrect answer is option 'D'. Can you explain this answer?
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