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The life cycle of many embryophytes includes a generation called a sporophyte and a generation called a gametophyte. O Diploid, Haploid O Triploid, Diploid O Haploid, Diploid O Diploid, Triploid

The life cycle of many embryophytes includes a generation called a sporophyte and a generation called a gametophyte. O Diploid, Haploid O Triploid, Diploid O Haploid, Diploid O Diploid, Triploid

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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### Understanding the Life Cycle of Embryophytes The life cycle of many embryophytes (land plants) is characterized by two distinct and alternating generations: the sporophyte and the gametophyte. These generations differ in terms of their ploidy, which refers to the number of sets of chromosomes they contain. **Question:** The life cycle of many embryophytes includes a ______ generation called a sporophyte and a ______ generation called a gametophyte. **Options:** 1. Diploid, Haploid 2. Triploid, Diploid 3. Haploid, Diploid 4. Diploid, Triploid **Correct Answer:** 1. Diploid, Haploid **Explanation of Terms:** - **Diploid (2n):** This refers to cells that have two sets of chromosomes. In the context of embryophytes, the diploid generation is called the sporophyte. This generation undergoes meiosis to produce spores. - **Haploid (n):** This refers to cells that have one set of chromosomes. The haploid generation in embryophytes is called the gametophyte, and it produces gametes (sperm and eggs) through mitosis. **Life Cycle Detail:** - The **sporophyte** generation is diploid and produces spores by meiosis. - These spores grow into the **gametophyte**, which is haploid. - The gametophyte produces gametes. - Fusion of these gametes (fertilization) creates a diploid zygote, which grows into a new sporophyte, thus completing the cycle. Understanding this alternation of generations is fundamental in botany and provides insight into the evolutionary adaptations of plants.
Transcribed Image Text:### Understanding the Life Cycle of Embryophytes The life cycle of many embryophytes (land plants) is characterized by two distinct and alternating generations: the sporophyte and the gametophyte. These generations differ in terms of their ploidy, which refers to the number of sets of chromosomes they contain. **Question:** The life cycle of many embryophytes includes a ______ generation called a sporophyte and a ______ generation called a gametophyte. **Options:** 1. Diploid, Haploid 2. Triploid, Diploid 3. Haploid, Diploid 4. Diploid, Triploid **Correct Answer:** 1. Diploid, Haploid **Explanation of Terms:** - **Diploid (2n):** This refers to cells that have two sets of chromosomes. In the context of embryophytes, the diploid generation is called the sporophyte. This generation undergoes meiosis to produce spores. - **Haploid (n):** This refers to cells that have one set of chromosomes. The haploid generation in embryophytes is called the gametophyte, and it produces gametes (sperm and eggs) through mitosis. **Life Cycle Detail:** - The **sporophyte** generation is diploid and produces spores by meiosis. - These spores grow into the **gametophyte**, which is haploid. - The gametophyte produces gametes. - Fusion of these gametes (fertilization) creates a diploid zygote, which grows into a new sporophyte, thus completing the cycle. Understanding this alternation of generations is fundamental in botany and provides insight into the evolutionary adaptations of plants.
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