Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 119 views

    Seeds Laboratory Activity

    Uploaded by

    Daryl Boldios Loterte
    Seeds have three main parts - a seed coat, endosperm, and embryo. The seed coat protects the internal parts of the seed from water loss, sunlight, and parasites. The endosperm contains nutrients to support the embryo during germination. The embryo is the most important part, as it develops into a new plant. By dissecting lima beans, students can observe and identify these three key parts of a seed and understand their functions.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd

    Seeds Laboratory Activity

    Uploaded by

    Daryl Boldios Loterte
    119 views3 pages
    Seeds have three main parts - a seed coat, endosperm, and embryo. The seed coat protects the internal parts of the seed from water loss, sunlight, and parasites. The endosperm contains nutrients to support the embryo during germination. The embryo is the most important part, as it develops into a new plant. By dissecting lima beans, students can observe and identify these three key parts of a seed and understand their functions.

    Copyright

    © © All Rights Reserved

    Available Formats

    DOCX, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    Seeds have three main parts - a seed coat, endosperm, and embryo. The seed coat protects the internal parts of the seed from water loss, sunlight, and parasites. The endosperm contains nutrients to support the embryo during germination. The embryo is the most important part, as it develops into a new plant. By dissecting lima beans, students can observe and identify these three key parts of a seed and understand their functions.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    119 views3 pages

    Seeds Laboratory Activity

    Uploaded by

    Daryl Boldios Loterte
    Seeds have three main parts - a seed coat, endosperm, and embryo. The seed coat protects the internal parts of the seed from water loss, sunlight, and parasites. The endosperm contains nutrients to support the embryo during germination. The embryo is the most important part, as it develops into a new plant. By dissecting lima beans, students can observe and identify these three key parts of a seed and understand their functions.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    You are on page 1of 3

    Dissecting Seeds

    l. INTRODUCTION
    A seed is an important part of a flowering plant. They give rise to a new plant. They
    may be of different shapes, colors and sizes. They may be round, wrinkled, winged
    or hairy. They are in a dormant condition until they receive adequate sunlight, water,
    and soil. The growth of the plant from a seed is known as germination. A seed has
    three parts:
     Seed Coat - A seed coat protects the internal parts of a seed. A thick seed
    coat protects the seed from sunlight and water. It prevents the loss of water
    and entry of parasites within the seeds. The hard seed coats prevent
    germination during unfavorable environmental conditions. An opening in the
    integument of the ovule is known as the micropyle and is visible on some
    seed coats.

     Endosperm - The endosperm contains the nutrients stored in it. It provides


    nutrients to the seed in the form of starch, carbohydrates and proteins to
    support the embryo during germination. It is located below the seed coat. The
    seeds remain viable with the intake of nutrients until germination.

     Embryo - The embryo is the most important part of a seed. It is diploid,


    developed from the fertilized egg. All the cells that need to develop into a
    mature embryo are present within the embryo.
    II. Objectives
    At the end of the activity, students are able to:
    1. identify the parts of seeds and their functions
    2. label the parts of the seeds
    3. appreciate the importance of seeds in the environment.
    III. Materials
     large lima beans
     a bowl
     a magnifying glass
     paper towels
    IV. Methods
    1. Soak the lima beans in a bowl of water for 15-20 minutes to soften them.
    Soak 2-3 beans in case some break or won’t open easily. Set enough beans
    aside to have a dry bean to be use for comparison.
    2. Using your thumbnails, then carefully split the soaked bean open to reveal the
    inside and parts of the seed.
    3. Using a hand lens or magnifying glass locate and identify the seed coat, plant
    embryo, and cotyledon.
    4. As you are dissecting your seeds, draw what they see and label the parts of
    the seed.
    V. Result and Discussion
    1. Describe what you see in the outside of your dry seed and wet seed.
    ________________________________________________________
    ______________________________________________________________
    ______________________________________________________________
    ______________________________________________________________
    ___________________.
    2. Draw what you think you will see inside the seed.

    3. Open your wet seed and observe it with your magnifying glass and draw and
    label what you see.

    4. Compare your prediction with what you actually observed inside your seed.
    Write what is the same and what is different.
    ________________________________________________________
    ______________________________________________________________
    ______________________________________________________________
    ______________________________________________________________
    ___________________.
    VI. Guide questions
    1. What is the main function of a seed?
    2. What is the most important function of the endosperm?
    3. What are the types of seed coat?
    4. What are the parts of the embryo?
    5. Explain the importance of the seed.

    VII. Conclusion

    VIII. Reference

    You might also like