Diversity in Living Organisms

Plant Kingdom

Everywhere you see, you see a green cover, with different types of plants and trees. Plants and plant products are something very familiar that you use in your everyday life. But, have you ever wondered about the different types of plants and trees? Did you know that the Plant Kingdom is divided into several subgroups, with each one having special features? Delve into the depths of Kingdom Plantae and unearth some of the fascinating facts.

Suggested Videos

Play
Play
Play
Arrow
Arrow
ArrowArrow
Classification of Plant Kingdom H
The Hierarchy of Classification Groups
Pisces
Slider

Characteristic features of Plant Kingdom

These living organisms are made of eukaryotic cells and are multicellular. The cells have a cell wall which is made of cellulose. These are autotrophic and synthesize food by photosynthesis due to the presence of chloroplasts.

Plant Kingdom

Classification of Plant Kingdom

Based on whether plants have a well-differentiated body and the presence or absence of specialized tissues for transport, and the ability to bear seeds Kingdom Plantae (Plant Kingdom) is can be classified into different divisions. The features and examples of each division are mentioned hereunder.

Division Thallophyta

These are the lowermost plants of the plant kingdom, without a well-differentiated body design. This means that the plant body is not differentiated as roots, stem, and leaves. They are commonly called algae, are permanently aquatic. Examples include Spirogyra, Chara, and Ulothrix.

Division Bryophyta

These are small terrestrial plants. They show differentiation in the body design, with stem, leaf-like structures, and root-like structures. But, they do not have any specialized tissue to conduct water and other substances. They live in damp and sandy habitats and are often referred to as the amphibians of the plant kingdom. Examples are Riccia, Funaria, and Marchantia

Division Pteridophyta

These are supposed to be the oldest vascular plants.  The plant body is differentiated into roots, stem, and leaves, apart from having a specialized tissue for conduction. This tissue helps in the conduction of water and other substances from part of the plant to the other.

These plants have naked embryos called spores. The reproductive organs in these plants are inconspicuous. Examples: Marselia, Ferns

(Source: Wikipedia)

Division Phanerogamae

Phanerogams are seed-bearing plants. The plant body is well differentiated with stem, leaves, and roots. There are well differentiated reproductive tissues that produce seeds. These plants also have a well-developed vascular system.

Depending on whether the seeds produced are naked or whether they are enclosed, phanerogams are further classified into two subdivisions. They are Gymnosperms and Angiosperms

Gymnosperms

Gymnosperms are plants with naked seeds. There are about 650 living species of gymnosperm plants. The plants are usually perineal, evergreen and woody.

They have a well-developed vascular tissue but do not have vessels. The reproductive organs generally form cones or strobilus. There is no fruit formation and the seeds are hence said to be naked. Examples: Cycas, Pinus, Deodar

Pine Cone (Wikimedia Commons)

Learn about Gymnosperms in more detail here

Angiosperms

Angiosperms are seed-bearing plants. Seeds develop inside tissues that get modified to form the fruit of the plant. Also called the flowering plants, they are found abundantly in nature.  These plants are usually terrestrial and they may be annual, biennial or perennial. The vascular system is very well developed with xylem and phloem. Angiosperms also show the feature of double fertilization. Examples: Mustard plant, Pea plant.

On the basis of the cotyledons (seed leaves) Angiosperms are further divided into Monocotyledonous plants and Dicotyledonous plants. Monocots have seeds with single seed leaf, having vascular bundles arranged in a complex manner. Dicots, on the other hand, have two cotyledons. The vascular bundle is arranged in a ring.

Learn more about the Animal Kingdom here.

Solved Questions For You

Q: Specialized tissue for conduction of water and other substances is present in which of the following?

  1. Gymnosperms
  2. Pteridophyta
  3. Both of these
  4. None of these

Ans: The correct option is “C”. Gymnosperms and Pteridophytes both have a specialized vascular tissue. Learn more about Pteridophytes in detail here.

Q: Thallophyta, Bryophyta, and Pteridophyta are together called as?

Ans: They are called as Cryptogams as they are non-seed bearing plants.

Share with friends

Customize your course in 30 seconds

Which class are you in?
5th
6th
7th
8th
9th
10th
11th
12th

Leave a Reply

avatar
  Subscribe  
Notify of

Stuck with a

Question Mark?

Have a doubt at 3 am? Our experts are available 24x7. Connect with a tutor instantly and get your concepts cleared in less than 3 steps.

Download the App

Watch lectures, practise questions and take tests on the go.

Do you want

Question Papers

of last 10 years for free?

No thanks.