Does sunflower have basal Placentation?

Does sunflower have basal Placentation?

Basal placentation: The placenta is at the base (bottom) of the ovary and a single ovule is attached to it. Example: Sunflower, marigold. ... Free central placentation: The ovules are borne on central axis and septa are absent.

What is placenta in flowering plants?

Placenta, plural Placentas, orPlacentae, in botany, the surface of the carpel (highly modified leaf) to which the ovules (potential seeds) are attached. The placenta is usually located in a region corresponding somewhat to the margins of a leaf but is actually submarginal in position.

What is Flower describe the parts of typical flower?

A typical flower has four main parts—or whorls—known as the calyx, corolla, androecium, and gynoecium (Figure 1). The outermost whorl of the flower has green, leafy structures known as sepals. The sepals, collectively called the calyx, help to protect the unopened bud.

What is the difference between petals and sepals?

The main difference between sepals and petals is that sepals are the green colour, leaf-like structures that form the outermost whorl whereas petals are the bright-colored petaloid structures which form the inner whorl. ... Sepals and petals are two non-reproductive structures in a flower.

What is sepal and petal in flower?

Sepal: The outer parts of the flower (often green and leaf-like) that enclose a developing bud. Petal: The parts of a flower that are often conspicuously colored. Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther.

What is the difference between petals and Petaloid sepals?

Answer: Petals are altered leaves that edge the propagative parts of floras. They are often luminously colored or remarkably formed to attract pollinators. Petaloid sepals are the external antiseptic spirals of the flower, which composed form what is recognised as the perianth.

What is Polyandraus?

Answer: Polyandrous Androecium is when stamens are many free e.g., Corchorus. Polyadelphous Androecium is when filaments are united in many groups with their anthers remaining free e.g., Ricinus, Citrus etc. Explanation: Androecium is the stamens of a flowering plant collectively.