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प्रश्न
Identify the incorrect pair
पर्याय
sporopollenin - exine of pollen grain
tapetum – nutritive tissue for developing microspores
Nucellus – nutritive tissue for developing embryo
obturator – directs the pollen tube into micropyle
उत्तर
Nucellus – nutritive tissue for developing embryo
संबंधित प्रश्न
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
What happens to the following after fertilization?
Ovules
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:
What is the function of the part labelled '4'?
What is ‘double fertilization’? Describe it with the help of a neat and well-labeled diagram. Give its importance.
Expand the following abbreviation IW.
The question has four options. Choose the correct answer:
When only ovary forms fruits they are known as
Which of the following represent megagametophyte
In majority of plants pollen is liberated at
Name the cell which divides to form male nuclei.
Give a concise account of the steps involved in the fertilization of an angiosperm plant.
Identify the function of filiform apparatus.
From the following identify the fate of the male gametes discharged in the synergid.
Following diagram represents double fertilization. Identify the INCORRECT label.
Fusion of one of the male gametes with egg nucleus is referred to as ______.
Double fertilization is a distinctive feature of ______.
Find out the CORRECT sequence of events taking place in pollen - pistil interaction.
- Pollen tube enters one of the synergids and bursts to release male gametes.
- Pollen tube enters the ovule through the micropyle of the ovary.
- The pollen tube grows through the stigmatic tissue and then style.
- Pistil recognizes the correct pollen and accepts it.
In the figure given below label the following parts: male gametes, egg cell, polar nuclei, synergid and pollen tube
Name the following:
A diploid nucleus in central cell of embryo sac in plants.
What is Siphonogamy?
