Chapter 38 - Plant Reproduction

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Chapter 38 - Plant Reproduction - Quiz

Take this brief quiz to test your plant knowledge from our discussion of chapter 38, with a few other questions prinkled in as well from chapter 36.


Questions and Answers
  • 1. 

    Which of the following is not associated with the male plant?

    • A.

      Anther

    • B.

      Filament

    • C.

      Pistil

    • D.

      Microsporangia

    • E.

      Stamen

    Correct Answer
    C. Pistil
    Explanation
    The pistil is not associated with the male plant. The pistil is the female reproductive organ found in flowering plants, consisting of the stigma, style, and ovary. It is responsible for receiving pollen and producing seeds. In contrast, the other options listed - anther, filament, microsporangia, and stamen - are all associated with the male reproductive structures of a plant.

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  • 2. 

    You isolate a plant's reproductive cells and determine that it is a megaspore.  This means the cell is

    • A.

      Haploid and female

    • B.

      Haploid and male

    • C.

      Diploid and female

    • D.

      Diploid and male

    Correct Answer
    A. Haploid and female
    Explanation
    A megaspore is a haploid cell that is involved in the female reproductive process of plants. In plants, the female reproductive cells are haploid, meaning they have half the number of chromosomes compared to the rest of the cells in the plant. Therefore, the correct answer is "haploid and female".

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  • 3. 

    What does not have to be present for endosperm production?

    • A.

      The zygote

    • B.

      Polar nuclei

    • C.

      Pollen

    • D.

      Ovule

    Correct Answer
    D. Ovule
    Explanation
    Endosperm production does not require the presence of the ovule. The endosperm is a tissue that provides nourishment to the developing embryo in the seed. It is typically formed through the fusion of the sperm nuclei with the polar nuclei in the embryo sac, a structure found within the ovule. However, even if the ovule is not present, the fusion of the polar nuclei with the sperm nuclei can still occur, leading to endosperm production.

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  • 4. 

    The symbiotic relationship between a fungus and a plant's roots which is actually found inside the plant's roots is

    • A.

      Ectomycorrhizae

    • B.

      Endomycorrhizae

    • C.

      Rhizobium

    • D.

      Endospore

    Correct Answer
    B. Endomycorrhizae
    Explanation
    Endomycorrhizae refers to a symbiotic relationship between a fungus and a plant's roots, where the fungus actually resides inside the plant's roots. This relationship is beneficial for both the fungus and the plant, as the fungus helps the plant in absorbing nutrients, especially phosphorus, from the soil, while the plant provides the fungus with carbohydrates. This type of mycorrhizal association is commonly found in many plant species and plays a crucial role in enhancing their nutrient uptake and overall growth.

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  • 5. 

    Stomata control is regulated by

    • A.

      K

    • B.

      N

    • C.

      Cl

    • D.

      Ca

    Correct Answer
    A. K
    Explanation
    Stomata control is regulated by potassium ions (K+). Potassium ions play a crucial role in the opening and closing of stomata, which are tiny pores on the surface of leaves that allow for gas exchange. When potassium ions are actively pumped out of the guard cells surrounding the stomata, water follows, causing the guard cells to shrink and the stomata to close. Conversely, when potassium ions are taken up by the guard cells, water enters, causing the cells to swell and the stomata to open. Thus, potassium ions are essential for regulating stomatal aperture and controlling the exchange of gases and water vapor in plants.

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  • 6. 

    Which of these parts is not needed in order for a flower to be considered "complete"?

    • A.

      Sepals

    • B.

      Petals

    • C.

      Stamen

    • D.

      Stem

    • E.

      Pistil

    Correct Answer
    D. Stem
    Explanation
    The stem is not needed in order for a flower to be considered "complete". The stem's main function is to support the flower and transport water and nutrients, but it is not essential for the flower to be considered complete. The sepals, petals, stamen, and pistil are all reproductive structures that are necessary for a flower to be considered complete.

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  • 7. 

    Which flower part is not associated with being a female?

    • A.

      Megagamete

    • B.

      Stigma

    • C.

      Ovule

    • D.

      Filament

    Correct Answer
    D. Filament
    Explanation
    The filament is not associated with being a female because it is a part of the stamen, which is the male reproductive organ of a flower. The filament supports the anther, where pollen is produced. In contrast, the megagamete, stigma, and ovule are all associated with the female reproductive organs of a flower. The megagamete is the female gamete or egg cell, the stigma is the receptive surface for pollen, and the ovule is the structure that contains the female gamete and develops into a seed after fertilization.

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  • 8. 

    Which is not correct?

    • A.

      Sporophytes are diploid

    • B.

      Spores are diploid

    • C.

      Gametes are haploid

    • D.

      Gametophytes are haploid

    Correct Answer
    B. Spores are diploid
    Explanation
    Spores are actually haploid, not diploid. In the life cycle of plants, sporophytes produce spores through meiosis, which results in the reduction of the chromosome number by half. These spores then develop into gametophytes, which are also haploid. The gametophytes produce gametes through mitosis, and when these gametes fuse during fertilization, they form a diploid zygote which grows into a diploid sporophyte. Therefore, the correct answer is that spores are diploid.

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  • 9. 

    Which is the correct order? 1. emergence of shoot tip from the soil 2. water uptake, seed coat bursting and start of metabolic activity 3. formation of embryonic root 4. hypocotyl straightens

    • A.

      4,2,1,3

    • B.

      3,2,4,1

    • C.

      2,3,1,4,

    • D.

      1,4,3,2

    Correct Answer
    C. 2,3,1,4,
    Explanation
    The correct order of the events in seed germination is as follows:

    2. Water uptake, seed coat bursting, and start of metabolic activity: This is the first step in seed germination where water is absorbed by the seed, causing it to swell and burst the seed coat. This triggers metabolic activity and the activation of enzymes necessary for growth.

    3. Formation of embryonic root: Once the seed coat is burst, the embryonic root, also known as the radicle, emerges from the seed. This root will anchor the plant and absorb water and nutrients from the soil.

    1. Emergence of shoot tip from the soil: After the root is established, the shoot tip or the plumule emerges from the soil. This part of the plant will eventually develop into leaves and stems.

    4. Hypocotyl straightens: The hypocotyl is the region of the stem below the cotyledons. As the shoot tip emerges, the hypocotyl straightens and lifts the cotyledons above the soil surface, allowing them to unfold and start photosynthesis.

    Therefore, the correct order is 2,3,1,4.

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  • 10. 

    Which is not an asexual reproductive mechanism?

    • A.

      Cloning

    • B.

      Grafting

    • C.

      Genetic engineering

    • D.

      Manual pollination

    Correct Answer
    D. Manual pollination
    Explanation
    Manual pollination is not an asexual reproductive mechanism because it involves the transfer of pollen from the stamen of one plant to the stigma of another plant, which requires the involvement of male and female reproductive structures. Asexual reproductive mechanisms, on the other hand, do not involve the fusion of male and female gametes and can include processes like cloning, grafting, and genetic engineering.

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