Anatomy of Flowering Plants


  1. Stems modified into flat green organs performing the functions of leaves are known as









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    Phylloclade refers to a portion of a flattened leaf-like stem or branch with multiple nodes and internodes, and cladode for a single internode of a phylloclade. In some plants, the petioles are flattened and widened, to become phyllodes or phyllodia.

    Correct Option: C

    Phylloclade refers to a portion of a flattened leaf-like stem or branch with multiple nodes and internodes, and cladode for a single internode of a phylloclade. In some plants, the petioles are flattened and widened, to become phyllodes or phyllodia.


  1. Leaves become modified into spines in :-









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    In Opuntia, leaves become modified into spines to avoid transpiration so as to save water for desert adaptation. The stems of this plant appear like-leaf, termed as- phylloclades which perform the process of photosynthesis.

    Correct Option: D

    In Opuntia, leaves become modified into spines to avoid transpiration so as to save water for desert adaptation. The stems of this plant appear like-leaf, termed as- phylloclades which perform the process of photosynthesis.



  1. The standard petal of a papilionaceous corolla is also called









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    Papilionaceous flowers are flowers with the characteristic irregular and butterfly-like corolla. A single, large upper petal is known as the banner or vexillum and the name has been derived from an ancient military standard.

    Correct Option: C

    Papilionaceous flowers are flowers with the characteristic irregular and butterfly-like corolla. A single, large upper petal is known as the banner or vexillum and the name has been derived from an ancient military standard.


  1. Proximal end of the filament of stamen is attached to the









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    The proximal end is attached to the thalamus whereas the distal end bears anther.

    Correct Option: D

    The proximal end is attached to the thalamus whereas the distal end bears anther.



  1. An example of edible underground stem is:









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    Potato is an example of edible underground stem.
    • It is differentiated into nodes and internodes. The ‘eyes’ on potato tuber indicate axillary buds at the nodes.
    • It bearsscaly leaves.The leaves do notstore food.
    • Axillary buds arise at the nodes.
    • Does not bear roots.

    Correct Option: D

    Potato is an example of edible underground stem.
    • It is differentiated into nodes and internodes. The ‘eyes’ on potato tuber indicate axillary buds at the nodes.
    • It bearsscaly leaves.The leaves do notstore food.
    • Axillary buds arise at the nodes.
    • Does not bear roots.