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प्रश्न
Which of the following represent megagametophyte
पर्याय
Ovule
Embryo sac
Nucellus
Endosperm
उत्तर
Embryo sac
संबंधित प्रश्न
Where and how does triple fusion take place?
Triple Fusion involves:
(i) Fusion of one male, gamete with female gamete
(ii) Fusion of tube nucleus with generative nvcleus
(iii) Fusion of two polar nuclei.
(iv) Fusion of second male gamete with two polar nuclei
Describe any two devices in a flowering plant which prevent both autogamy and geitonogamy.
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:
Where does the germination of the pollen grain take place and how?
What is the function of pollen tube? Explain with the help of a diagram.
What is a fruit?
Do you think fruits are important for the plant?
The question has four options. Choose the correct answer:
The study of fruits is known as
The question has four options. Choose the correct answer:
When only ovary forms fruits they are known as
Describe the process of double fertilization.
Give any four points of significance of double fertilization.
After fertilization the ovule becomes ______.
Assertion: Sporopollenin preserves pollen in fossil deposits
Reason: Sporopollenin is resistant to physical and biological decomposition
In Haplopappus gracilis, number of chromosomes in cells of nucellus is 4. What will be the chromosome number in Primary endosperm cell?
In ______ sepal is seen on the fruit after fertilization.
Ovules fall off after fertilization.
Identity the part of embryo sac which takes part in formation of primary endosperm nucleus during fertlisation
Name the following:
A diploid nucleus in central cell of embryo sac in plants.
Name the nuclei involved in triple fusion.
