Classification of Angiosperms
Monocotyledons
One cotyledon makes up each seed. Simple leaves with parallel veins are present. This group includes accidental roots. There are three people in each floral whorl. It has numerous, closed vascular bundles. Bananas, sugarcane, flowers, etc. are a few examples.
Dicotyledons
These plants produce seeds with two cotyledons. Instead of adventitious roots, they have tap roots. The venation on the leaves is reticulate. The vascular bundles are arranged in rings, and the flowers are either tetramerous or pentamerous. Grapes, sunflowers, tomatoes, etc. are examples.
Angiosperms | Class 9 Biology
The term biodiversity is used to describe a variety of biological forms. The term “biodiversity” is more frequently used to describe the range of living things that can be found in a given area. A geographic region’s diversity of living forms contributes to its stability. Based on the form and function of their bodies, all living things are recognized and grouped. Charles Darwin initially introduced the concept of evolution in his book The Origin of Species in 1859.
Classification Groups’ Hierarchy
- Ernst Haeckel (1894), Robert Whittaker (1959), and Carl Woese (1977) are three scientists who made an effort to group all living things into broad groups and called them “Kingdoms.
- Whittaker divided life forms into five kingdoms, including:
- Monera: No members of the Monera kingdom have multicellular body plans or a clearly defined nucleus or organelles.
- Numerous varieties of unicellular eukaryotic organisms make up the Protista kingdom of life.
- Fungi: The heterotrophic eukaryotic creatures that make up the kingdom of fungi.
- Plantae: Multicellular eukaryotic creatures with cell walls make up this kingdom. Because they are autotrophs, plant life uses chlorophyll to produce food (i.e. photosynthesis).
- Animalia: All members of the Animalia kingdom are multicellular eukaryotes that lack cell walls. Animalia kingdom members are heterotrophs.
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