Class 9 Biology Diversity In Living Organisms Angiosperms


The term angiosperm is derived from two different words. They are

  • Angio- means covered and
  • Sperma means seed.

The seeds develop inside the organs of the plants that get modified into fruit. They are therefore called flowering plants.

The plant embryos present in the seeds have certain structures. They are called cotyledons or seed leaves.

These structures emerge and become green during the germination of the seed.

Plants whose seeds have a single cotyledon are called monocotyledonous or monocots.

Plants whose seeds have two cotyledons are called dicots.

Fig: Ipomoea

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