What is a whorl? How many whorls does a flower have?
Answers
Answer:
Whorl #1: The Calyx
The calyx, which is the outermost whorl of a flower, protects the inner whorls, especially when the flower is in its bud state. The calyx is made up of sepals, which are two small green structures at the flower’s base that look like tiny leaves.
Whorl #2: The Corolla
The second whorl of the flower is the corolla, which is composed of the flower’s petals. The petals serve two purposes: to protect the reproductive organs of the flower and to attract pollinators. Because of this second purpose, they are usually brightly colored and scented so that animals and insects will come close to them and move around the flower’s pollen. The first two whorls of the flower — the calyx and the corolla — are collectively called the perianth.
Whorl #3: The Stamens
The third whorl of a flower is the stamen, the male reproductive part. The stamen is made of a thin vertical thread-like structure called a filament topped with a circular or oblong structure called an anther. The anther produces pollen, which is the male contribution to the reproduction process in plants.
Whorl #4: The Carpels
At the center of the flower is the fourth whorl — the carpels, which contain the pistil of the flower. The pistil is the plant's female reproductive organ, which is composed of three parts: the ovary, the style, and the stigma. The ovary contains the eggs, or ovules, of the plant, and when the ovules are fertilized, the ovary sometimes turns into a fruit to house the seed. The top of the ovary leads to a vertical structure called a style, which supports the stigma. The stigma catches grains of pollen that the wind or pollinators disperse, and the pollen grains travel down the style to the ovary.
Answer:
a leaf with a single leaf blade is called a simple leaf. A leaf whose leaf blade is divided into a number of leaflets is called a compound leaf