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प्रश्न
Can an unfertilised, apomictic embryo sac give rise to a diploid embryo? If yes, then how?
उत्तर
Yes, if the embryo develops from the cells of nucellus or integument it will be diploid.
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संबंधित प्रश्न
Where and how does triple fusion take place?
Explain the events up to double fertilisation after the pollen tube enters one of the synergids in an ovule of an angiosperm.
What are the advantages of the following in the flower to the plant concerned?
Smooth and light pollen
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
Name the parts labelled 1, 2, 3, 4 and 5.
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
Where does the germination of the pollen grain take place and how?
Given ahead is a diagrammatic representation of the process of fertilization. Study the same and then answer the question that follows:
What happens to
i) Ovary
ii) Ovule after fertilisation
Given ahead is a diagrammatic representation of the process of fertilization. Study the same and then answer the question that follows:
What is the function of the synergids?
What is ‘double fertilization’? Describe it with the help of a neat and well-labeled diagram. Give its importance.
What is ‘double fertilization’? Describe it with the help of a neat and well-labeled diagram. Give its importance.
Name the scientists who have contributed to the following:
Discovered double fertilization.
Explain the development of a Dicot embryo
Pollen tube was discovered by
By which of the following the megasporangium proper of an angiosperm ovule is represented?
What would be the number of chromosomes in the megaspore mother cell of the plant if an endosperm of an angiosperm has 24 chromosomes?
Double fertilization is fusion of ______.
Double fertilization is characteristic of ______.
Double fertilization is a distinctive feature of ______.
All the events from pollen deposition on the stigma until pollen tubes enter the ovules are together referred to as ______.
In the figure given below label the following parts: male gametes, egg cell, polar nuclei, synergid and pollen tube
What is Siphonogamy?
