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In angiosperms, endosperm is formed by :-
[UP CPMT 2001]
- a)Division of fused polar nuclei
- b)Free nuclear divisions of megaspore
- c)Division of fused synergids and male gamete
- d)Division of fused polar nuclei and male gamete
Correct answer is option 'D'. Can you explain this answer?
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In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Divisi...
Formation of Endosperm in Angiosperms
Endosperm is a triploid tissue that develops within the seed of angiosperms. It serves as a storage tissue for nutrients and provides nourishment to the developing embryo. The formation of endosperm involves the fusion of male and female gametes followed by several rounds of nuclear divisions.
The correct option for the formation of endosperm in angiosperms is 'D', i.e., division of fused polar nuclei and male gamete.
Process of Endosperm Formation
The process of endosperm formation can be explained as follows:
1. Double Fertilization: During double fertilization in angiosperms, one sperm cell fuses with the egg cell to form the zygote, which develops into the embryo. The other sperm cell fuses with the two polar nuclei in the central cell of the female gametophyte to form the triploid primary endosperm nucleus (PEN).
2. Division of PEN: The PEN undergoes several rounds of mitotic divisions without cytokinesis, resulting in the formation of a large, multinucleate cell called the syncytial endosperm.
3. Cellularization: The syncytial endosperm undergoes cellularization, where the cell membranes grow inward to divide the multinucleate cytoplasm into individual cells.
4. Nutrient Storage: The endosperm cells accumulate nutrients such as starch, proteins, and lipids, which are used to nourish the developing embryo.
Conclusion
In conclusion, endosperm in angiosperms is formed by the fusion of male and female gametes, followed by several rounds of mitotic divisions of the PEN. This process results in the formation of a triploid tissue that serves as a storage tissue for nutrients and provides nourishment to the developing embryo.
Endosperm is a triploid tissue that develops within the seed of angiosperms. It serves as a storage tissue for nutrients and provides nourishment to the developing embryo. The formation of endosperm involves the fusion of male and female gametes followed by several rounds of nuclear divisions.
The correct option for the formation of endosperm in angiosperms is 'D', i.e., division of fused polar nuclei and male gamete.
Process of Endosperm Formation
The process of endosperm formation can be explained as follows:
1. Double Fertilization: During double fertilization in angiosperms, one sperm cell fuses with the egg cell to form the zygote, which develops into the embryo. The other sperm cell fuses with the two polar nuclei in the central cell of the female gametophyte to form the triploid primary endosperm nucleus (PEN).
2. Division of PEN: The PEN undergoes several rounds of mitotic divisions without cytokinesis, resulting in the formation of a large, multinucleate cell called the syncytial endosperm.
3. Cellularization: The syncytial endosperm undergoes cellularization, where the cell membranes grow inward to divide the multinucleate cytoplasm into individual cells.
4. Nutrient Storage: The endosperm cells accumulate nutrients such as starch, proteins, and lipids, which are used to nourish the developing embryo.
Conclusion
In conclusion, endosperm in angiosperms is formed by the fusion of male and female gametes, followed by several rounds of mitotic divisions of the PEN. This process results in the formation of a triploid tissue that serves as a storage tissue for nutrients and provides nourishment to the developing embryo.
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In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Divisi...
Endosperm is formed when the two polar nuclei fuses with the second male gamet. now, look, endosperm provides nourishment to the growing embryo. just one single fused cell can't provide sufficient nutrients. so, after fusion, the endosperm must divide to increase it's content. so. correct option is d
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In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer?
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In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer?.
In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer?.
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In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of In angiosperms, endosperm is formed by :-[UP CPMT 2001]a)Division of fused polar nucleib)Free nuclear divisions of megasporec)Division of fused synergids and male gameted)Division of fused polar nuclei and male gameteCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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