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Sexual reproduction


SEXUAL REPRODUCTION


  • In plants, sexual reproduction is carried out only in flowering plants.
  • Flowers are the reproductive organs of a plant.

flower

  • Usually a flower contains both male and female reproductive cells called gametes in one flower.
  • Such flowers are also called complete or bisexual flowers.
  • When flowers have either male gametes or female gametes, they are called incomplete or unisexual flowers.
  • Such type of flower is found in corn and papaya plants.
  • Complete flowers have all the four parts: sepals, petals, stamens, and pistils.

 

Stamens (male organ):

flower

  • They bear the anthers that contain pollen grains.
  • Pollen grains have male gametes in them.

 

Pistil (female organ):

  • The pistil is divided into a stigma, style, and ovary.
  • The ovary contains the female gametes, called ovules.

flower

  • In sexual reproduction, seeds are formed.
  • New plants develop from these seeds.
  • Mature plants flower, and the flower after pollination and fertilization becomes a fruit.
  • Fruits may have one or more seeds inside them.