Biology Chapter on Genetics and Plants
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Questions and Answers

What two events during meiosis are primarily responsible for genetic diversity?

  • Independent assortment and crossing over (correct)
  • DNA replication and cell differentiation
  • Cell division and recombination
  • Mitosis and chromosomal segregation

    • What is the function of leaves in plants?

  • Support and transport nutrients
  • Storage of nutrients and water
  • Conduct photosynthesis and transpiration (correct)
  • Reproduction and seed dispersal

    • What is the alternation of generations in plants?

  • The production of seeds and fruits
  • A cycle of diploid and haploid stages in the life cycle (correct)
  • The division of meristematic tissue
  • The process of photosynthesis and respiration

    • Which of the following statements correctly describes the difference between spermatogenesis and oogenesis?

    <p>Spermatogenesis is a continuous process, while oogenesis has pauses in development.</p> Signup and view all the answers

    What are vascular bundles in plants?

    <p>Groups of xylem and phloem tissues for transport</p> Signup and view all the answers

    Which statement best defines peristalsis?

    <p>The contraction and relaxation of muscles to move content through the digestive tract</p> Signup and view all the answers

    What is the chromosomal composition of a human gametic cell?

    <p>23 chromosomes</p> Signup and view all the answers

    Which type of isolation mechanism is exemplified by organisms that breed at different times of the year?

    <p>Temporal isolation</p> Signup and view all the answers

    Which genetic disorder is characterized by the presence of an extra chromosome 21?

    <p>Down's syndrome</p> Signup and view all the answers

    Which of the following accurately describes an analogous structure?

    <p>Structures that serve similar functions but arise from different evolutionary origins.</p> Signup and view all the answers

    Which of the following is NOT a characteristic of disruptive selection?

    <p>Intermediate forms of a trait are favored</p> Signup and view all the answers

    Two organisms belong to the same family. What other taxa will they definitely have in common?

    <p>Genus</p> Signup and view all the answers

    Which of the following processes results in the development of a new species due to geographic isolation?

    <p>Allopatric speciation</p> Signup and view all the answers

    What is the primary mechanism by which bacteria become resistant to antibiotics?

    <p>Bacteria develop mutations to resist the antibiotics</p> Signup and view all the answers

    Which of the following best describes the sequence of events during inhalation?

    <p>Diaphragm contracts, chest cavity expands, air pressure decreases, air rushes in.</p> Signup and view all the answers

    Which of the following is NOT a characteristic of arteries?

    <p>Contain valves to prevent backflow</p> Signup and view all the answers

    What is the primary factor that influences breathing rate?

    <p>The amount of carbon dioxide in the blood</p> Signup and view all the answers

    Which of the following accurately describes the difference between pulmonary and systemic circulation?

    <p>Pulmonary circulation carries deoxygenated blood to the lungs, while systemic circulation carries oxygenated blood to the tissues.</p> Signup and view all the answers

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