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  • Winged pollen grains are present inOption: 1 MangoOption: 2 Cycas<div class='

Winged pollen grains are present in

Option: 1

Mango


Option: 2

Cycas


Option: 3

Mustard


Option: 4

Pinus


Answers (1)

best_answer

 

 

Reproduction in gymnosperms -

 

  • Microspores include male gametophyte which produces only two male gametes or sperm. 
  • The pollen grains or microspores are liberated at more than 2-celled stage from microsporangium. 
  • Water is not required for transport of male gamete. A pollen tube is formed that delivers male gametes to archegonia. 
  • Fertilization produces a zygote which later turns into an embryo.
  • Endosperm in gymnosperms is formed before fertilization. It represents the haploid female gametophyte generation.
  • The seeds are naked i.e. they are not formed inside fruit as in angiosperms. 
     

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Pinus has winged pollen grains.

Posted by

Sayak

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