There are commonly four distinct whorls of flower parts: (1) an outer calyx consisting of sepals; within it lies (2) the corolla, consisting of petals; (3) the androecium, or group of stamens; and in the centre is (4) the gynoecium, consisting of the pistils.

What are whorls of flower?

There are commonly four distinct whorls of flower parts: (1) an outer calyx consisting of sepals; within it lies (2) the corolla, consisting of petals; (3) the androecium, or group of stamens; and in the centre is (4) the gynoecium, consisting of the pistils.

What is whorl in leaves?

In botany, a whorl or verticil is an arrangement of leaves, sepals, petals, stamens, or carpels that radiate from a single point and surround or wrap around the stem or stalk. A leaf whorl consists of at least three elements; a pair of opposite leaves is not called a whorl.

What are the 4 whorls?

The flower is composed of four whorls of modified leaves, the calyx, corolla, androecium, and gynoecium. Each of these whorls contains one of the flower organs, the sepals, petals, stamens, or pistils, respectively.

What are the 4 types of whorls?

There are four groups of whorls:

  • Plain (concentric circles),
  • Central pocket loop (a loop with a whorl at the end),
  • Double loop (two loops that create an S-like pattern)
  • Accidental loop (irregular shaped).

What trees have whorled leaves?

Examples of trees and shrubs with a whorled leaf arrangement:

  • Blackboard tree (Alstonia scholaris)
  • Japanese clethra (Clethra barbinervis)
  • Lemonwood (Pittosporum eugenioides)
  • Mountain laurel (Kalmia latifolia)
  • Panicle hydrangea (Hydrangea paniculata)
  • Redvein enkianthus (Enkianthus campanulatus)

What is thalamus in flower?

Thalamus is found near the stalk of the flower. It is an old term used to specify that part of the flower that is specifically thickened part of the stem which is referred to as receptacle. It is from here that the structures of the flower grow.

What is androecium and gynoecium?

The gynoecium is the innermost whorl of a flower; it consists of (one or more) pistils and is typically surrounded by the pollen-producing reproductive organs, the stamens, collectively called the androecium.

What is androecium flower?

structure of flower flower are collectively called the androecium. For a discussion of the female reproductive parts of a flower, see pistil. In angiosperm: The androecium. Stamens (microsporophylls) are structures that produce pollen in terminal saclike structures (microsporangia) called anthers.

What are the 7 basic fingerprint patterns?

There are several variants of the Henry system, but that used by the Federal Bureau of Investigation (FBI) in the United States recognizes eight different types of patterns: radial loop, ulnar loop, double loop, central pocket loop, plain arch, tented arch, plain whorl, and accidental.

Is aloe vera whorled leaf?

Aloe vera is a perennial liliaceous plant which has juicy green leaves attached at the stem in a whorled pattern [6] .

What does a whorled leaf arrangement look like?

A whorled or verticillate arrangement is a plant with three or more leaves growing out of each node. In this pattern, there are several leaves coming from one spot on the plant stem. In some cases, it may look like a circle of leaves growing from a single spot on the stem.