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प्रश्न
Long Answer Question:
Draw a labeled diagram of the L.S. of anatropous ovule and list the components of the embryo sac and mention their fate after fertilization.
उत्तर
1. Structure of anatropous ovule:
2. List the components of embryo sac and mention their fate after fertilization:
| Components of the embryo sac | Fate after fertilization |
| Ovule | Seed |
| Egg | Embryo |
| Nucellus | Perisperm |
| Secondary nucleus | Endosperm |
| Outer integument | Testa (outer seed coat) |
| Inner integument | Tegmen (inner seed coat) |
| Micropyle | An opening in the seed (i.e. micropyle) |
| Synergids | Degenerate |
| Antipodals | Degenerate |
APPEARS IN
संबंधित प्रश्न
'Formation of primary endosperm nucleus is called triple fusion'. Give reason
What is triple fusion?
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.
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?
Explain double fertilization and its significance.
Size of pollen grain in Myosotis
Explain the development of a Dicot embryo
Identify the CORRECT statement with reference to cellular endosperm.
Double fertilization was first discovered by Nawaschin (1898) in ______.
