KTET Category-3 Natural science | Algae

Algae Believed to be the best photosynthetic eukaryotes, algae are found in water and form a group of protists that are of great biological importance to humans. Algae lack true stem, roots and leaves and therefore, are given the special name thallus. Spread...

KTET Category-3 Natural science |KINGDOM PROTISTA

KINGDOM PROTISTA All single-celled eukaryotes are placed under Protista. Being eukaryotes, the protistan cell body contains a well defined nucleus and other membrane-bound organelles. Some have flagella or cilia. Protists reproduce asexually and sexually by a process...

KTET Category-3 Natural science | Viruses

Viruses Viruses are the smallest living organisms, but without a cellular structure. They have a simple structure, consisting of a small piece of nucleic acid, either DNA or RNA, surrounded by a protein or lipoprotein coat. They can reproduce by invading living cells,...

KTET Category-3 Natural science | Bacteria

Bacteria Having appeared about 3,500 million years ago, bacteria are one of the oldest and smallest group of organisms with cellular length ranging from 0.1 to 10 um and possessing an average diameter of about 1 lum. Found in soil, dust, water, air, in and on plants...

KTET Category-3 Natural science | KINGDOM MONERA

KINGDOM MONERA Bacteria are the sole members of the Kingdom Monera. They are the most descriptions. They help in correct identification. Flora contains the actual account of habitat and distribution of plants of given area. These provide the index to the plant species...

KTET Category-3 Natural science | World of living

World Of Living Biology is the study of living organisms, that is, all plant and animal life, including man, and even the microbes. There are well-defined characteristics that differentiate the living’ from the non-living’. Living organisms are...
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