Observe the following part of a flowering plant. Prepare a note.
The given diagram is the structure of ovule which is present in the ovary (carpel) of
- An ovule is an egg shaped structure attached by a stalk (Funicle) to the inner side of the ovary.
- Depending upon the species of plant involved, an ovary may have one, two, severed or even hundreds of ovules.
- At the center of each ovule there is a microscopic embryo sac filled with food and water.
- The embryo sac is composed of gametophyte cells.
- The majority of flowering plants have an embryo sac consisting of seven cells and eight nuclei.
- They are one egg (female gamete), two synergids, one central cell (secondary nucleus) and three antipodals.
- Central cell contains two nuclei, they are called polar nuclei.