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Biology Test - 17

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Biology Test - 17
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Weekly Quiz Competition
  • Question 1
    5 / -1

    Which of the following statements are correct?

    (A) The acrosome of the sperm contains enzymes that help it penetrate the egg during fertilization.

    (B) Spermatogenesis produces four functional sperm cells from one primary spermatocyte.

    (C) The placenta allows the exchange of gases, nutrients, and waste between the mother and the fetus.

    (D) The vas deferens carries sperm from the testes to the epididymis.

    (E) The menstrual cycle is typically 3-5 days long, but it can vary.

    Choose the correct answer from the options given below:

    Solution

    (A) Correct: The acrosome of the sperm contains enzymes that help it penetrate the egg during fertilization.

    (B) Correct: Spermatogenesis produces four functional sperm cells from one primary spermatocyte.

    (C) Correct: The placenta facilitates the exchange of gases, nutrients, and waste between the mother and the fetus.

    (D) Incorrect: The vas deferens carries sperm from the epididymis to the urethra, not from the testes to the epididymis.

    (E) Incorrect: The menstrual cycle is typically 28 days long, but it can vary between individuals and the menstrual phase is normally 3-5 days long.

  • Question 2
    5 / -1

    Which of the following statements are correct?

    (A) Contraceptives are essential for reproductive health maintenance.

    (B) Sterilization procedures have high reversibility.

    (C) Vasectomy and tubectomy are surgical methods of contraception.

    (D) Intrauterine devices (IUDs) prevent fertilization by altering sperm motility.

    (E) Oral contraceptives must be taken once a month.

    Choose the correct answer from the options given below:

    Solution

    (A) Correct: Contraceptives help in preventing unintended pregnancies, which are essential in maintaining reproductive health.

    (B) Incorrect: Sterilization (vasectomy and tubectomy) is a permanent method, and reversibility is not guaranteed.

    (C) Correct: Vasectomy (male) and tubectomy (female) are surgical methods of contraception.

    (D) Correct: IUDs, particularly copper-releasing ones, alter sperm motility and prevent fertilization.

    (E) Incorrect: Oral contraceptives are typically taken daily for 21 days, not once a month.

  • Question 3
    5 / -1

    Read the passage and answer the five questions that follow:

    In flowering plants, sexual reproduction involves the fusion of male and female gametes to form a zygote, which develops into a seed. The process begins with pollination, which is the transfer of pollen from the anther (male part) to the stigma (female part). Once pollen grains reach the stigma, they germinate, and a pollen tube forms, growing down through the style to reach the ovary. Inside the ovary, ovules are fertilized by the sperm cell from the pollen grain. This fertilization process results in the formation of a zygote, which later develops into an embryo within the seed. The entire process is facilitated by the flower's structures, including the stamen and pistil.

    What is the first step in sexual reproduction in flowering plants?

    Solution

    The first step in sexual reproduction is pollination, where pollen is transferred from the male anther to the female stigma, initiating the process.

  • Question 4
    5 / -1

    Read the passage and answer the five questions that follow:

    In flowering plants, sexual reproduction involves the fusion of male and female gametes to form a zygote, which develops into a seed. The process begins with pollination, which is the transfer of pollen from the anther (male part) to the stigma (female part). Once pollen grains reach the stigma, they germinate, and a pollen tube forms, growing down through the style to reach the ovary. Inside the ovary, ovules are fertilized by the sperm cell from the pollen grain. This fertilization process results in the formation of a zygote, which later develops into an embryo within the seed. The entire process is facilitated by the flower's structures, including the stamen and pistil.

    Where does fertilization occur in a flowering plant?

    Solution

    Fertilization occurs inside the ovary, where the sperm cell from the pollen fertilizes the ovule, resulting in the formation of a zygote.

  • Question 5
    5 / -1

    Read the passage and answer the five questions that follow:

    In flowering plants, sexual reproduction involves the fusion of male and female gametes to form a zygote, which develops into a seed. The process begins with pollination, which is the transfer of pollen from the anther (male part) to the stigma (female part). Once pollen grains reach the stigma, they germinate, and a pollen tube forms, growing down through the style to reach the ovary. Inside the ovary, ovules are fertilized by the sperm cell from the pollen grain. This fertilization process results in the formation of a zygote, which later develops into an embryo within the seed. The entire process is facilitated by the flower's structures, including the stamen and pistil.

    What forms after fertilization in flowering plants?

    Solution

    After fertilization, the zygote develops into an embryo, and the ovule becomes a seed.

  • Question 6
    5 / -1

    Read the passage and answer the five questions that follow:

    In flowering plants, sexual reproduction involves the fusion of male and female gametes to form a zygote, which develops into a seed. The process begins with pollination, which is the transfer of pollen from the anther (male part) to the stigma (female part). Once pollen grains reach the stigma, they germinate, and a pollen tube forms, growing down through the style to reach the ovary. Inside the ovary, ovules are fertilized by the sperm cell from the pollen grain. This fertilization process results in the formation of a zygote, which later develops into an embryo within the seed. The entire process is facilitated by the flower's structures, including the stamen and pistil.

    What structure aids in the transfer of sperm to the ovule in flowering plants?

    Solution

    The pollen tube forms after pollination and grows down through the style, allowing the sperm cell to reach and fertilize the ovule in the ovary.

  • Question 7
    5 / -1

    Read the passage and answer the five questions that follow:

    In flowering plants, sexual reproduction involves the fusion of male and female gametes to form a zygote, which develops into a seed. The process begins with pollination, which is the transfer of pollen from the anther (male part) to the stigma (female part). Once pollen grains reach the stigma, they germinate, and a pollen tube forms, growing down through the style to reach the ovary. Inside the ovary, ovules are fertilized by the sperm cell from the pollen grain. This fertilization process results in the formation of a zygote, which later develops into an embryo within the seed. The entire process is facilitated by the flower's structures, including the stamen and pistil.

    The fusion of male and female gametes results in the formation of ___________

    Solution

    The fusion of male (sperm) and female (egg) gametes forms the zygote, which later develops into the seed.

  • Question 8
    5 / -1

    Read the passage and answer the five questions that follow:

    In flowering plants, the process of sexual reproduction is finely tuned to ensure that the species continues to thrive. One essential step in this process is the formation of the male and female gametes. The male gametes, or sperm cells, are produced in the anther of the stamen, while the female gametes, or egg cells, are found in the ovule within the ovary. During pollination, pollen from the anther is transferred to the stigma, the receptive part of the pistil. After this, the pollen grain grows a tube through the style, reaching the ovary where fertilization can occur. The sperm cell then fuses with the egg cell to form the zygote, beginning the development of the seed.

    Where are male gametes produced in flowering plants?

    Solution

    Male gametes, or sperm cells, are produced in the anther, which is part of the stamen in flowering plants.

  • Question 9
    5 / -1

    Read the passage and answer the five questions that follow:

    In flowering plants, the process of sexual reproduction is finely tuned to ensure that the species continues to thrive. One essential step in this process is the formation of the male and female gametes. The male gametes, or sperm cells, are produced in the anther of the stamen, while the female gametes, or egg cells, are found in the ovule within the ovary. During pollination, pollen from the anther is transferred to the stigma, the receptive part of the pistil. After this, the pollen grain grows a tube through the style, reaching the ovary where fertilization can occur. The sperm cell then fuses with the egg cell to form the zygote, beginning the development of the seed.

    What happens after pollen is transferred to the stigma?

    Solution

    After pollination, the pollen grain germinates on the stigma and forms a pollen tube that grows down through the style towards the ovary.

  • Question 10
    5 / -1

    Read the passage and answer the five questions that follow:

    In flowering plants, the process of sexual reproduction is finely tuned to ensure that the species continues to thrive. One essential step in this process is the formation of the male and female gametes. The male gametes, or sperm cells, are produced in the anther of the stamen, while the female gametes, or egg cells, are found in the ovule within the ovary. During pollination, pollen from the anther is transferred to the stigma, the receptive part of the pistil. After this, the pollen grain grows a tube through the style, reaching the ovary where fertilization can occur. The sperm cell then fuses with the egg cell to form the zygote, beginning the development of the seed.

    Where does fertilization occur in flowering plants?

    Solution

    Fertilization occurs in the ovary, where the sperm cell from the pollen grain fuses with the egg cell in the ovule.

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