Question:

The artificial system of classification is based on

Updated On: Aug 15, 2022
  • Morphological characters
  • Natural relationships
  • Phylogenetic characters
  • Chemical nature
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The Correct Option is A

Solution and Explanation

In artificial system of classification, only a few characters of the plants are being considered, for example, the grouping of plants into shrubs and trees or the sexual system of Linnaeus based on number of stamens and styles. The best known artificial system is of Linnaeus published in 1735. In natural system of classification, all the important characters of the plant are being considered, and the plants are classified according to their related affinities. Bentham and Hooker gave the natural system of classification. Phylogeny system in phylogenetic system of classification the plants are classified according to their evolutionary and genetic affinities. This system of classification was proposed by Engler in 1886, Hutchinson in 1926.
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Concepts Used:

Morphology of Flowering Plants

Morphology in flowering plants tells us that every plant has two systems such as a root system and a shoot system. The root system digs deep into the ground and structures a system of its own. On the other hand, the shoot system is the one that is above ground level and includes various plant parts. 

Root System

The descending part of the plant grows under the soil roots. During the germination process, the radicle from the seed grows earthward and branches out. The branches along with the primary root are called the root system. Roots lack chlorophyll and therefore they are not green in color. Roots are positively geotropic and hydrotropic, that is, they grow downwards ground and water, and negatively phototropic, which is growing away from light.

There are three types of root systems found in plants are as follows:

  1. TapRoot System
  2. Fibrous Root System
  3. Adventitious Root System

Shoot System

The stem is also an essential element of the plant. It is the ascending portion of the plant axis that bears branches, flowers, leaves, and fruits, as well as aiding in water and mineral conduction. It is the plant's aerial portion, brought about from an embryo's plumule or germinating seeds. Young stems are ordinarily green, but they finally turn woody and brown.