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Getting To Know Plants Test - 9

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Getting To Know Plants Test - 9
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Weekly Quiz Competition
  • Question 1
    1 / -0
    In a plant, the following part performs photosynthesis:
  • Question 2
    1 / -0
    Water is absorbed by ............... part of a plant.
  • Question 3
    1 / -0
    Which of the following are called food factories of the plants?
    Solution
    • The part of the plant which produces food due to the presence of chlorophyll pigment in its cells is a leaf. 
    • Leaves prepare food by a process called photosynthesis. 
    • In this process, food is produced by utilizing water and carbon dioxide in the presence of sunlight. Therefore, leaves are called the food factories of the plants.

    So, the answer is A.
  • Question 4
    1 / -0
    Which of the following is not a function of the roots?
    Solution
    Roots are the part of the plant that lies below the soil surface. It is an important part of a plant and plays many major roles such as acting as an anchor for the plant. Since it lies in the soil, it also absorbs and transports nutrients and water from the soil. It also prevents soil erosion.
    Starch preparation is done by chlorophyll present in leaves.
    Hence, the correct answer is option D.
  • Question 5
    1 / -0
    Veins
    Solution
    • Veins represent the vascular supply of leaf. 
    • Veins have both xylem and phloem tissues. In reticulate venation, veins divide and subdivide into finer veins, starting from main vein. 
    • As vascular elements are present in veins, they transport and distribute sap to all parts of leaves. 
    • Xylem elements transport water and minerals, while phloem cells transport photosynthates.

    So, the correct answer is option C.
  • Question 6
    1 / -0
    Small plants which live for one or two seasons are
    Solution
    • Herbs are small, seed-bearing plants without a woody stem in which all aerial parts die back to the ground at the end of each growing season. 
    • Herbaceous plants can be annuals (where the plant dies at the end of the growing season and grows back from seed next year) or biennials (plant dies after the second season).

    So, the correct answer is 'Herbs'.
  • Question 7
    1 / -0
    In which of the following properties does an animal and a plant differ?
    Solution

    $$\textbf{Correct option:}$$  Option D
    $$\textbf{Explanation for correct option:}$$
    Option D
    $$\bullet$$ Animals and plants differ in their ability to synthesize food. 
    $$\bullet$$ Plants are called autotrophs (producers) because of their ability to produce food by the process of photosynthesis.
    $$\bullet$$ The photosynthetic pigment chlorophyll present in their leaf cells traps solar energy and converts it into chemical energy (food).  
    $$\bullet$$ Animals on the other hand are called heterotrophs (consumers) because they directly or indirectly depend on green plants for food and energy.

    $$\textbf{Explanation for incorrect options: }$$
    Option A: Both plants and animals have organs that help them to perform various functions.
    Option B: Both plants and animals have the ability to grow and develop.
    Option C: Both plants and animals have the ability to reproduce and produce viable offspring to continue their species.
     
    $$\textbf{Conclusion:}$$ Thus, plants and animals only differ in their ability to synthesize food. 

  • Question 8
    1 / -0
    Which of the following part of the plant performs photosynthesis?
    Solution
    The plant is morphologically divided into roots, stem and leaves.
    1. Root that forms from the radicle of the embryo and is positively geotropic helps in the absorption of water and mineral from the soil.
    2. The stem that forms from the plumule of the embryo and holds various different part of the plant is positively phototrophic and provide mechanical support to stem.
    3. Leaves that originate from the stem and have a green coloured pigment called chlorophyll is the kitchen of plant and helps to convert the inorganic substance into organic substance.
    4. Root nodules are present in legume plants for the nitrogen fixation.
    So, the correct answer is 'Leaves'.
  • Question 9
    1 / -0
    ............ root system is present in most of the dicot plants.
  • Question 10
    1 / -0
    The reproductive part/s in a flower is/are
    Solution
    The flowers are considered as the reproductive parts of the plants. The female reproductive organs are known as pistil which is comprised of the style, stigma and ovary. The male reproductive organs is known as stamen which is comprised of the anther and filament.
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