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Biology Test 29...

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  • Question 1
    4 / -1

    Assertion (A): Metabolism is a defining feature of all living organisms.

    Reason (R): Metabolic reactions include both anabolism and catabolism, essential for the growth and maintenance of life.

  • Question 2
    4 / -1

    Mark the correct statements-

    (1) mycoplasma and N2- fixation bacteria both thrive for anaerobic condition

    (2) nitrogenase enzyme and PSII absent in heterocyst of nostoc

    How many statements are  correct -

  • Question 3
    4 / -1

    Statement: Growth in living organisms is fundamentally different from growth in non-living objects because it involves internal processes and cell division.

  • Question 4
    4 / -1

    Archaebacteria differ from cyanobacteria in-

  • Question 5
    4 / -1

    Assertion (A): Cyanobacteria are considered ancestors of chloroplasts in eukaryotic plants.

    Reason (R): They contain chlorophyll a, which is also found in the chloroplasts of green plants.

  • Question 6
    4 / -1

    Which of the following cell lack flagella-

  • Question 7
    4 / -1

    Statement: Archaebacteria and eubacteria are placed in separate domains because of their distinct genetic makeup and membrane lipid composition.

  • Question 8
    4 / -1

    Which is autotrophic bacteria-

  • Question 9
    4 / -1

    Assertion (A): Gymnosperms have naked seeds.

    Reason (R): In gymnosperms, the ovules and seeds are not enclosed by an ovary.

  • Question 10
    4 / -1

    Assertion (A): All chordates possess a notochord at some stage of their life.

    Reason (R): The notochord is a flexible rod that provides support to the body.

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