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Cross Pollination
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This lesson provides an insight into the process if cross pollination , it's types and finally explains the concept of Anemophily.

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
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  1. POLLINATION LESSON 3 PRESENTED BY - SHREYAA SHARMA


  2. TYPES OF POLLINATION SELF POLLINATION CROSS POLLINATION POLLINATION


  3. CROSS POLLINATION The transfer of pollen grains from the anther of one flower to the stigma of a genetically different flower . Cross Pollination is brought about with the help of an external agency. The external agency may be abiotic or biotic Cross Pollination is named after the agency that assists it -^) s s r oni nation 1s named after the a


  4. TYPES OF CROSS POLLINATION Cross Pollination is named after the agency that assists it: ANEMOPHILY-Wind Pollination HYDROPHILY - Water Pollination ENTOMOPHILY Insect Pollination ORNITHOPHILY BirdPollination CHIROPTEROPHILY - Bat W Pollination MALACOPHILYSnailPonation > MALACOPHILY-Snail Pollination


  5. ANEMOPHILY Gk. Anemos - Wind, Philein - To love Definition: It is a mode of cross pollination or transfer of pollen grains from mature anther to the stigma of a pistil which is accomplished through the agency of wind Example - Coconut , Date Palm , Maize , Grasses


  6. CHARACTERISTICS OF ANEMOPHILOUS FLOWERS Flowers are small and inconspicuous MALE FLOWERS Non essential parts are absent or reduced Non essential parts are absent or redu V Flowers are usually colourless, odourless and nectarless V Male flowers Stamens are more abundant and pollen TASSEL POLLEN GRAINS grains are produced in large numbers Pollen grains are light, small, winged or dusty Pollen grains are dry, smooth and non sticky COB STYLES STIGMAS POLLEN GRAINS OF ANOTHER


  7. CHARACTERISTICS OF ANEMOPHILOUS FLOWERS VStigmas are hairy, feathery or branched to catch pollen grains . The large thread like stigmas and styles of cob of maize hang in air to catch wind borne pollens VStigmas and anthers are exserted VThe only issue is that anemophily is a VERSATILE ANTHER FEATHERY STIGMA nondirectional and hence a highly wasteful process ARY