Which of the following statements about plant nutrition is INCORRECT?

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RRB Group D 9 Sept 2022 Shift 2 Official Paper
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  1. Carbon is taken up by green plants from atmospheric carbon dioxide.
  2. Minerals and nutrients are poorly absorbed by water.
  3. Iron and manganese are both considered micronutrients.
  4. Plants, in general, make use of the water in the soil at the root zone.

Answer (Detailed Solution Below)

Option 2 : Minerals and nutrients are poorly absorbed by water.
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The correct answer is Minerals and nutrients are poorly absorbed by water.

Key Points

  • Nutrition in plants
    • The components of our food, such as carbohydrates, vitamins, minerals, and fats, are called nutrients.
    • Living things can't survive without these parts.
    • Animals and humans, on the other hand, do not produce their own food. 
    • There are two modes of nutrition:
      • Autotrophic – Plants are referred to as primary producers because they provide their own nutrition. Light, carbon dioxide, and water are used by plants to make their food.
      • Heterotrophic – Due to their reliance on plants for food, both animals and humans are referred to as heterotrophs.

Additional Information

  • Photosynthesis
    • Photosynthesis is the process by which plants can make their own food.
    • Leaves are the primary source of food production.
    • The root takes in water and minerals from the soil and sends them through vessels to the leaves.
    • Stomata, which are tiny pores on the leaves that are surrounded by guard cells, are how carbon dioxide reaches the leaves.
    • Chlorophyll is a green pigment found in leaves that helps them use sunlight's energy to prepare food.
    • Photosynthesis is the process by which plants produce food in the presence of sunlight.
    • Consequently, all living things get their primary energy from the sun.
    • In the presence of sunlight, water, and carbon dioxide are utilized to produce carbohydrates and oxygen during photosynthesis.
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