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Microspore in the Male gametophyte B develops into A of a sporophyte pollination and (embryo fertilization sporophyte) Megaspore in the Female develops into gametophyte of a sporophyte A B E

Microspore in the Male gametophyte B develops into A of a sporophyte pollination and (embryo fertilization sporophyte) Megaspore in the Female develops into gametophyte of a sporophyte A B E

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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options for pull down menus: 

options for 1:

-ovule

-pollen sac

 

options for 2: 

-in seed

-in ovule

-pollen

 

options for 3: 

-spore

-seed

-flower

 

options for 4:

-pollen sac

-ovule

 

options for 5: 

-in ovule

-in seed

-pollen 

 

**Plant Life Cycle Diagram** This diagram illustrates the development stages of a plant's life cycle, showing the progression from spores to gametophytes and ultimately to an embryo sporophyte through the processes of pollination and fertilization. 1. **Stage A**: Microspore in the **anther** of a sporophyte. 2. The microspore develops into a **male gametophyte** (**pollen grain**). 3. **Stage C**: Pollination and fertilization result in the formation of an **embryo sporophyte**. 4. **Stage D**: Megaspore in the **ovule** of a sporophyte. 5. The megaspore develops into a **female gametophyte** (**embryo sac**). **Explanation of Diagram Elements**: - **Microspore and Megaspore**: These are the spores produced by meiosis in the respective male and female structures (anther and ovule) of the plant. - **Male and Female Gametophyte**: The gametophytes are the haploid structures that produce gametes (sperm and egg cells). - **Pollination and Fertilization**: Pollination refers to the transfer of pollen grains to the female reproductive structure. Fertilization is the fusion of the sperm cell from the pollen grain with the egg cell in the embryo sac, leading to the formation of an embryo sporophyte. This diagram highlights the key transitional steps in the life cycle of a typical flowering plant, focusing on the roles of microspores and megaspores in developing into their respective gametophytes, leading to successful fertilization and embryo development.
Transcribed Image Text:**Plant Life Cycle Diagram** This diagram illustrates the development stages of a plant's life cycle, showing the progression from spores to gametophytes and ultimately to an embryo sporophyte through the processes of pollination and fertilization. 1. **Stage A**: Microspore in the **anther** of a sporophyte. 2. The microspore develops into a **male gametophyte** (**pollen grain**). 3. **Stage C**: Pollination and fertilization result in the formation of an **embryo sporophyte**. 4. **Stage D**: Megaspore in the **ovule** of a sporophyte. 5. The megaspore develops into a **female gametophyte** (**embryo sac**). **Explanation of Diagram Elements**: - **Microspore and Megaspore**: These are the spores produced by meiosis in the respective male and female structures (anther and ovule) of the plant. - **Male and Female Gametophyte**: The gametophytes are the haploid structures that produce gametes (sperm and egg cells). - **Pollination and Fertilization**: Pollination refers to the transfer of pollen grains to the female reproductive structure. Fertilization is the fusion of the sperm cell from the pollen grain with the egg cell in the embryo sac, leading to the formation of an embryo sporophyte. This diagram highlights the key transitional steps in the life cycle of a typical flowering plant, focusing on the roles of microspores and megaspores in developing into their respective gametophytes, leading to successful fertilization and embryo development.
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