□ Diploid zygole Sporangium Sperm Gametes: Egg Haploid spores

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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In the figure below number one represents which plant generation
**Overview of Plant Life Cycle Diagram**

This diagram illustrates the plant life cycle, focusing on the alternation of generations between the sporophyte and gametophyte phases.

1. **Sporangium**: The cycle starts with the sporangium (label 4), which produces haploid spores. These spores are spread by various means such as wind or water.

2. **Haploid Spores Formation**: The haploid spores (indicated with a cluster of green circles) germinate to form the gametophyte.

3. **Gametophyte Stage**: The gametophyte (label 2) develops, containing specialized structures to produce gametes (sperm and egg). 

4. **Fertilization**: Sperm from one gametophyte fertilizes an egg from another, leading to the formation of a diploid zygote (label 3).

5. **Zygote to Sporophyte Transition**: The diploid zygote develops into a mature sporophyte (label 1), completing the cycle.

**Diagram Details**

- **Arrows**: Arrows indicate the flow of the life cycle, showing transitions from one stage to another.
- **Labels**: Numbered boxes (1 through 4) mark key stages within the cycle.
- **Colors**: Different colors emphasize various elements, such as green for the living structures and arrows to show directionality.

This cyclical process represents how plants reproduce and sustain their generations through alternating phases of haploid and diploid states.
Transcribed Image Text:**Overview of Plant Life Cycle Diagram** This diagram illustrates the plant life cycle, focusing on the alternation of generations between the sporophyte and gametophyte phases. 1. **Sporangium**: The cycle starts with the sporangium (label 4), which produces haploid spores. These spores are spread by various means such as wind or water. 2. **Haploid Spores Formation**: The haploid spores (indicated with a cluster of green circles) germinate to form the gametophyte. 3. **Gametophyte Stage**: The gametophyte (label 2) develops, containing specialized structures to produce gametes (sperm and egg). 4. **Fertilization**: Sperm from one gametophyte fertilizes an egg from another, leading to the formation of a diploid zygote (label 3). 5. **Zygote to Sporophyte Transition**: The diploid zygote develops into a mature sporophyte (label 1), completing the cycle. **Diagram Details** - **Arrows**: Arrows indicate the flow of the life cycle, showing transitions from one stage to another. - **Labels**: Numbered boxes (1 through 4) mark key stages within the cycle. - **Colors**: Different colors emphasize various elements, such as green for the living structures and arrows to show directionality. This cyclical process represents how plants reproduce and sustain their generations through alternating phases of haploid and diploid states.
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