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Pollination and its Significance
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This lesson introduces the concept of a flower, the processes involved in the life cycle of a flower and finally introduces the concept of pollination.

Shreyaa Sharma is teaching live on Unacademy Plus

Shreyaa Sharma
Bot & Zoo grad. Qualified IIT JAM. Masters in Envtl. Sc. - Sustainable Devpt. and Disaster Management . A curious learner :-) .

U
Unacademy user
Madame y don't u make course on Botany/Zoology from SSC CGL point of view...I would be great learning from you.
very good explanation
  1. POLLINATION LESSON 1 PRESENTED BY - SHREYAA SHARMA


  2. FLOWER Stigma StyleCarpel Ovary Anther Stamen LFilament Ovule Petal (petals = corolla) Sepal (sepals calyx)


  3. A flower is basically the reproductive organ of a plant And it is just a modified condensed shoot It comprises of four whorls: 1. The sepals ( calyx) 2. The petals (corolla) 3. The stamens ( androecium ) 4. The carpels (gynoecium) Stigma Style Carpel Ovary Anther Stamen Filament Ovule (petals - corolla) Sepal (sepals calyx)


  4. SEXUAL REPRODUCTION IN FLOWERING PLANTS Flower Formation Pollination Fertilization Seed Dispersal and Germination Fruit and seed formation


  5. POLLINATION PollinationPoln -Anther Filament The process of transference of pollen grains from the anther to the stigma Style Ovule Petal Sepal


  6. SIGNIFICANCE OF POLLINATION Involves the transference of the male gametophyte , close to the female gametophyte in order to ensure fertilisation It has freed the seed plants from t It has freed the seed plants from the dependence on external water d fertilisation It can be manipulated in order to produce pure lines as well as desired varieties


  7. TYPES OF POLLINATION SELF POLLINATION CROSS POLLINATION POLLINATION