Question

What does this diagram represent ?

Hint:

Counting check: 3 Antipodals + 2 Synergids + 1 Egg + 1 Central Cell = {7 Cells}.
3 nuclei in Antipodals + 2 in Synergids + 1 in Egg + 2 Polar nuclei = {8 Nuclei}.

Answer 1

Step 1: Understanding the Concept:
In flowering plants, the megaspore develops into the female gametophyte, which is housed inside the ovule.
Step 2: Detailed Explanation:
The diagram shows a fully developed structure after three successive mitotic divisions of the functional megaspore.
It is a highly specialized structure containing precisely arranged cells ready for fertilization.
This specific arrangement (7 cells and 8 nuclei) is known as the "Polygonum type" embryo sac, which is the most common form in angiosperms.
Step 3: Final Answer:
The diagram represents a mature angiosperm embryo sac.