classification of plant


Presentation Description

It tells how to classify plants and there are also some unusual animals which are difficult to classify


Presentation Transcript

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Classification of plants and animals By Satya

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Classification of animals Classification of plants content

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Classification of animals Animals are classified in a variety of ways. This helps scientists to study the relationships in animal groups and to see the whole animal family tree as it has developed through time. The study of animal classification is called taxonomy.

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The basic unit of an animal is the cell. A cell is the smallest unit of any animal or plant. Some animals are one celled, some consist of millions of cells. Each cell is filled with a living matter called protoplasm. It also has a nucleus that is the center of the cell and directs its activities. The cytoplasm is the area outside of the nucleus. Each cell is held together by a cell membrane which is like a very thin skin for the cell. Many cells have different jobs to do in an animal, whether they be bone, blood, skin cells. A group of the same kinds of cells are called tissues. A group of tissues that work together to do a job in the animal's body is an organ. The stomach, heart, kidneys, lungs are examples of organs. A group of organs that do a number of jobs of the same kind are systems.

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Animals are grouped together or classified in a variety of ways. Some of them are: Whether an animals in one celled or many celled. How an animal's bodily systems differ.   Animal groupings are similar to plants. The groupings are: Kingdom - There are two basic kingdoms, the plant and animal kingdoms. There is a third with animals that bridge the plant and animal kingdom. Phylum - Within the plant and animal kingdoms are big groupings called phylum or phyla. Animals are grouped into phyla that have broad similar characteristics. Classes - These are a finer division of a phyla. Orders - These are divisions of classes. Families - These are divisions of Genera - These are the divisions of families. Species - These are the divisions of genera.

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Classification of plants Plants are classified in several different ways, and the further away from the garden we get, the more the name indicates a plant's relationship to other plants, and tells us about its place in the plant world rather than in the garden. Usually, only the Family, Genus and species are of concern to the gardener, but we sometimes include subspecies, variety or cultivar to identify a particular plant. Starting from the top, the highest category, plants are classified as follows. Each group has the characteristics of the level above it, but has some distinguishing features. The further down the scale you go, the more minor the differences become, until you end up with a classification which applies to only one plant.

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FAMILY Each Order is divided into Families. These are plants with many botanical features in common, and is the highest classification normally used. At this level, the similarity between plants is often easily recognisable by the layman. Modern botanical classification assigns a type plant to each Family, which has the particular characteristics which separate this group of plants from others, and names the Family after this plant. The number of Plant Families varies according to the botanist whose classification you follow. Some botanists recognize only 150 or so families, preferring to classify other similar plants as sub-families, while others recognize nearly 500 plant families. A widely-accepted system is that devised by Croquets in 1968, which is only slightly revised today. The names of the Families end in -aceae

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