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A. State any two parts of the brain. b. Mention any two excretory products. c. Explain any one adaptation of a leaf to photosynthesis. d. Describe how fraternal twins are produced. 2. Figure 1 is a diagram of the human digestive system. Use it to answer the questions that follow.

Biology

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4 steps

Part a· 1 step

  1. Identify two major parts of the brain.

    • The brain consists of several parts, including the cerebrum, cerebellum, and brainstem. The two parts are:
    1. Cerebrum
    2. Cerebellum

Part b· 1 step

  1. Identify two substances excreted from the body.

    • Excretory products are waste substances removed from the body. The two excretory products are:
    1. Urea
    2. Carbon dioxide

Part c· 1 step

  1. Explain one adaptation of a leaf for photosynthesis.

    • Leaves are adapted for photosynthesis in several ways, such as having a large surface area to absorb maximum sunlight. One adaptation is: Leaves have a large surface area to absorb as much sunlight as possible for photosynthesis.

Part d· 1 step

  1. Describe the process of fraternal twin formation.

    • Fraternal twins, also known as dizygotic twins, occur when two separate eggs are released from the ovary and are fertilized by two different sperm. The process is: Fraternal twins are produced when two separate eggs are released from the mother's ovaries and are each fertilized by a different sperm. This results in two distinct zygotes, which develop into two separate embryos.
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