Advertisements
Advertisements
प्रश्न
What are the advantages of the following in the flower to the plant concerned?
Fragrant nectar
उत्तर
Attracting insects for pollination
APPEARS IN
संबंधित प्रश्न
'Formation of primary endosperm nucleus is called triple fusion'. Give reason
Read the following statement and answer the questions that follow :
"A guava fruit has 200 viable seeds."
(a) What are viable seeds?
(b) Write the total number of :
(i) Pollen grains (ii) Gametes
in producing 200 viable guava seeds.
c) Prepare a flow-chart to depict the post-pollination events leading to viable-seed production in a flowering plant.
Fill in the blanks with suitable words.
Transference of pollen grains from anthers to stigma of the same flower is called ________.
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?
The question has four options. Choose the correct answer:
When only ovary forms fruits they are known as
Why fertilization process in angiosperms is called as double fertilization?
Assertion: Sporopollenin preserves pollen in fossil deposits
Reason: Sporopollenin is resistant to physical and biological decomposition
What is Mellitophily?
In the diagram given below, show the path of a pollen tube from the pollen on the stigma into the embryo sac. Name the components of egg apparatus.
Can an unfertilised, apomictic embryo sac give rise to a diploid embryo? If yes, then how?
