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Pistil: Stigma, Style, Ovary and Types of Gynoecium

Biology · Sexual Reproduction in Flowering Plants · NEET

The pistil (carpel) is the female part of a flower and has three parts: stigma (landing platform for pollen), style (the slender stalk below it), and ovary (the swollen base that holds the ovules). All the pistils of a flower together form the gynoecium. Memory hook: think of a bottle lying down — the cap is the stigma, the neck is the style, and the wide body is the ovary.
Structure of a Pistil (Carpel)Stigmalanding platform for pollenStyleslender part below stigmaOvarybasal bulge; locule holds ovulesOvules = megasporangia on placenta
A pistil (carpel) has three parts: stigma (pollen landing platform), style (slender stalk), and ovary (base with locule and ovules). All pistils together make the gynoecium.

Your doubts, answered

Are pistil and carpel the same, or different?

For NEET, treat pistil and carpel as the same unit — one female reproductive unit made of stigma, style and ovary. The whole female part of the flower (all pistils together) is called the gynoecium. So carpel = pistil = one unit; gynoecium = the total of all such units in one flower.

What is the difference between gynoecium and pistil?

Gynoecium is the whole female part of the flower. A pistil is one unit inside it. If a flower has only one pistil it is monocarpellary; if it has more than one pistil it is multicarpellary. So gynoecium is the group, pistil is the member.

What do syncarpous and apocarpous mean?

These words apply only when a flower has more than one pistil (multicarpellary). If the pistils are fused (joined) together, it is syncarpous. If the pistils are free (separate), it is apocarpous. NCERT example logic: joined = syncarpous, separate = apocarpous.

What are the three parts of a pistil in order?

From top to bottom: stigma, then style, then ovary. Stigma is the landing platform for pollen grains. Style is the elongated slender part just below the stigma. Ovary is the basal bulged part, and inside it is the ovarian cavity (locule) where the placenta and ovules sit.

What is present inside the ovary?

Inside the ovary is the ovarian cavity, also called the locule. The placenta is located inside this cavity, and the ovules (megasporangia) arise from the placenta. The way ovules are arranged on the placenta is called placentation, which is a separate topic.

⚠️ The NEET trap
✗ Every flower has just one pistil, so gynoecium and pistil always mean the same thing.
✓ A flower can be monocarpellary (one pistil) or multicarpellary (many pistils). Gynoecium is the whole female part; a pistil is one unit inside it. Only in multicarpellary flowers do the terms syncarpous (fused) and apocarpous (free) apply.
🧠 One flower can hold many pistils — count the pistils before you decide the gynoecium type.

Solved Sexual Reproduction in Flowering Plants NEET PYQs

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Frequently asked

What is a pistil made of?

A pistil is made of three parts: stigma at the top, style in the middle, and ovary at the base. The ovary contains the ovarian cavity (locule) with the placenta and ovules.

What is the function of the stigma?

The stigma acts as the landing platform for pollen grains during pollination. It is the receptive surface where compatible pollen sticks and starts to germinate.

What is the difference between monocarpellary and multicarpellary?

Monocarpellary means the gynoecium has a single pistil. Multicarpellary means it has more than one pistil. In multicarpellary flowers the pistils may be fused (syncarpous) or free (apocarpous).

Where are the ovules located?

Ovules arise from the placenta, which lies inside the ovarian cavity (locule) of the ovary. Each ovule is technically the megasporangium of the flower.

Related concepts:
Structure of the Ovule (Megasporangium)Placentation Types in AngiospermsStamen: Structure, Filament and AntherFlower as a Modified ShootPollen-Pistil Interaction and Pollen Tube Growth
Practise Biology for NEET:
Biology MCQs (free, chapter-wise)Sexual Reproduction in Flowering Plants PYQs