11th Class Biology Morphology of Flowering Plants (Root, Stem And Leaf)

  • question_answer 23)
      The placenta is attached to the developing seed near the (a) testa                               (b) hilum                              (c) micropyle      (d) chalaza

    Answer:

                      (b) The placenta is attached to the developing seed near hilum. It is the scar located nearthe edge where seed breaks from stalk of funiculus, i.e., connecting the seed with fruitwall and placenta. Rest of the options are incorrect as Testa is the outer most covering of seed, micropyle is a small opening in seed coatthrough which water enters seed and chalaza is a tissue where nucellus and integument are joined. Nutrients from the plant travel through vascular tissue in the funiculus and outer integuments through the chalaza into the nucellus.


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