lecture 1.1
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Questions and Answers

Plants provide most of the calories and protein for the human diet. Is this statement true or false?

  • False
  • False, animals are the main source of calories and protein for humans
  • True (correct)
  • True, but only in tropical regions
  • Photosynthesis is the process by which plants convert __________ and __________ into sugars.

  • Methane, Oxygen
  • Carbon Dioxide, Water (correct)
  • Oxygen, Nitrogen
  • Hydrogen, Helium
  • Which of the following is NOT a human necessity mentioned in the text?

  • Clothing
  • Shelter
  • Food
  • Transportation (correct)
  • Plants serve as __________ in the food chain by producing sugars through photosynthesis.

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

    Which of the following is NOT a product supplied by angiosperms as mentioned in the text?

    <p>Plastics and synthetic materials</p> Signup and view all the answers

    Which of the following is true about stamens and carpels in angiosperms as mentioned in the text?

    <p>They are the structures that produce seeds</p> Signup and view all the answers

    Which of the following is NOT a role of plants in the food chain as described in the text?

    <p>Tertiary Consumers</p> Signup and view all the answers

    Which of the following is a by-product of photosynthesis as mentioned in the text?

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

    Which elements are carbohydrates composed of?

    <p>Carbon, hydrogen, and oxygen</p> Signup and view all the answers

    What is the main function of carbohydrates in cells?

    <p>Sources of energy</p> Signup and view all the answers

    How many different amino acids make up proteins?

    <p>20</p> Signup and view all the answers

    Which type of lipids are largely composed of carbon and hydrogen?

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

    What is the main role of proteins in the human diet?

    <p>Structural materials</p> Signup and view all the answers

    Which macromolecule is insoluble in water?

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

    How do you name a species?

    <p>genus name and specific epithet</p> Signup and view all the answers

    Which statement is correct?

    <p>genus is a group of related species</p> Signup and view all the answers

    How did Linnaeus's sexual system work?

    <p>likened flowers to marriages</p> Signup and view all the answers

    Study Notes

    Plant Importance

    • Plants provide most of the calories and protein for the human diet.

    Photosynthesis

    • Photosynthesis is the process by which plants convert light energy and carbon dioxide into sugars.

    Food Chain

    • Plants serve as producers in the food chain by producing sugars through photosynthesis.
    • Plants are not a human necessity mentioned in the text (False, plants are a human necessity).

    Angiosperms

    • Angiosperms supply seeds, fruits, and flowers.
    • Angiosperms do not supply amino acids.

    Angiosperm Structure

    • Stamens and carpels are the reproductive structures of angiosperms.

    Photosynthesis By-Products

    • Oxygen is a by-product of photosynthesis.

    Carbohydrates

    • Carbohydrates are composed of carbon, hydrogen, and oxygen.
    • The main function of carbohydrates in cells is to provide energy.

    Proteins

    • Proteins are composed of 20 different amino acids.
    • The main role of proteins in the human diet is to build and repair tissues.

    Lipids

    • Fats are a type of lipid that is largely composed of carbon and hydrogen.

    Macromolecules

    • Lipids are insoluble in water.

    Species Classification

    • A species is named using the binomial nomenclature system.
    • A species is named using the genus and species name (e.g., Homo sapiens).

    Linnaeus's Contributions

    • Linnaeus's sexual system was a classification system based on the number of stamens and pistils in a flower.
    • Linnaeus's system worked by grouping plants based on their reproductive structures.

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