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Function of filiform apparatus is to :
- a)Produce nectar
- b)Guide the entry of pollen tube
- c)Recognize the suitable pollen at stigma
- d)Stimulate division of generative cell
Correct answer is option 'B'. Can you explain this answer?
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Function of filiform apparatus is to :a)Produce nectarb)Guide the entr...
Function of Filiform Apparatus:
The filiform apparatus plays a crucial role in the process of pollen tube germination and guidance in plants.
Guiding the Entry of Pollen Tube:
- The filiform apparatus is a specialized structure present on the stigma of the flower.
- Its function is to guide the entry of the pollen tube into the stigma for successful fertilization.
- It consists of elongated cells with a thickened cell wall that helps in recognizing and interacting with the pollen grains.
Mechanism:
- When a pollen grain lands on the stigma, the filiform apparatus recognizes the suitable pollen based on specific molecular interactions.
- The pollen tube then germinates and grows towards the ovary for fertilization.
- The filiform apparatus guides the pollen tube by providing physical support and signaling molecules along its pathway.
Significance:
- The filiform apparatus ensures the successful germination of pollen grains and directs the pollen tube towards the ovule for fertilization.
- Without this specialized structure, the pollen tube may not be able to navigate through the stigma and reach the ovary, leading to unsuccessful fertilization.
In conclusion, the function of the filiform apparatus is crucial in guiding the entry of the pollen tube into the stigma, ensuring successful fertilization in plants.
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Function of filiform apparatus is to :a)Produce nectarb)Guide the entry of pollen tubec)Recognize the suitable pollen at stigmad)Stimulate division of generative cellCorrect answer is option 'B'. Can you explain this answer?
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