NEET Biology Anatomy of Flowering Plants Question Bank Self Evaluation Test - Anatomy of Flowering Plants

  • question_answer
    Match column-I with column-II and choose the correct option.
    Column-I Column-II
    A. Spring wood or wood I. Lighter in colour early
    B. Autumn wood or late wood II. High density 
    III. Low density
    IV. Darker in colour
    V. Larger number of xylem elements
    VI. Vessels with wider cavity
    VII. Lesser number of xylem elements
    VIII. Vessels with small cavity
    Which of the following combination is correct?

    A) A - II; IV; VII; VIII;      B - I; III; V; VI

    B) A - I; II; VII; VIII;         B - III; IV; V; VI

    C) A - I; III; V; VI;            B - II; IV; VII; VIII

    D) A - I; III; VII; VIII;         B - II; IV; V; VI

    Correct Answer: C

    Solution :

    [c] Spring wood is the part of an annual ring of wood, characterised by large, thin-walled cells, formed during Ae first part of the growing season. It is lighter in colour with low density. It produces a larger number of xylem elements having vessels with wider cavities. Autumn wood or late wood is the wood element formed during winter when cambial activity is more. It is darker in colour with high density. Wood elements are lesser in amount and have narrow lumen.


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