Question

INTERNAL STRUCTURE O
FLOWERING PLANTS explain
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Answer 1

Answer:

hii dear

Explanation:

Flowers contain the plant’s reproductive structures. A typical flower has four main parts—or whorls—known as the calyx, corolla, androecium, and gynoecium .

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. The second whorl is comprised of petals—usually, brightly colored—collectively called the corolla. The number of sepals and petals varies depending on whether the plant is a monocot or dicot. In monocots, petals usually number three or multiples of three; in dicots, the number of petals is four or five, or multiples of four and five. Together, the calyx and corolla are known as the perianth. The third whorl contains the male reproductive structures and is known as the androecium. The androecium has stamens with anthers that contain the microsporangia. The innermost group of structures in the flower is the gynoecium, or the female reproductive component(s). The carpel is the individual unit of the gynoecium and has a stigma, style, and ovary. A flower may have one or multiple carpels.

Answer 2

Flower structures (locate these in Figure above) include:

a perianth of modified leaves which surround the reproductive organs themselves, made of:

• a calyx of modified leaves called sepals, usually green

• a corolla of modified leaves known as petals, often brightly colored

• the “man’s house” or androecium: one or two whorls of stamens, each made of

1. a filament or stalk

2.an anther, producing pollen

• the “woman’s house” or gynoecium: one or more pistils, each made of

1. a sticky stigma
2. a sticky stigmaa neck-like style
3. a sticky stigmaa neck-like stylean ovary containing one or more ovules