Bacteria

Bacteria

Dear Viewers: Today we will discuss about the Bacteria Definition of Bacteria:  They are prokaryotic, achlorophyllous and single cellular simple organisms and can survive in extreme conditions eg. Rhizobium, Pseudomonas, Clostridium PROPERTIES BACTERIA They are prokaryotic (true nucleus is absent) They are achlorophyllous Mesosome is present Cell wall is present It can withstand very high temperature Reproduction mainly asexual or vegetative Rhizobium, Pseudomonas, Clostridium, etc.   Define bacteria (1) Ans. Bacteria are defined as one type of aerobic or anaerobic, smallest and simplest unicellular microscopic autoreplicating prokaryotic organism found to occur in air, in water, in living organisms etc. familiarly called as microbes. Discuss the general structure of bacteria. (6) Structure of the Bacteria: Bacteria are single cell organisms. Their cells are Prokaryotic, meaning that they lack a membrane-bound nucleus and many of the cell parts of Eukaryotes (Cells that have a nucleus and many membrane-bound organelles). Some of their parts are: a)  Capsule - Outermost protective layer usually found on disease causing bacteria. Most bacteria contain some...
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Virus An Enigma to Life

Virus An Enigma to Life

Hi viewers Today we will discuss about the Virus An Enigma to Life Virus An Enigma to Life PROPERTIES OF VIRUS It is the bridge between living and non-living It is living when it is present inside the body of the host and non-living when it is outside the body of the host It can be crystallised It may contain DNA and RNA as a genetic material Pox-virus, Maesles-virus, etc .Define virus. Virus is defined as ultramicroscopic, acellular, antigenic, obligatory parasitic, infectious particle containing only one type of nucleic acid, either DNA or RNA as their genome and having the power to multiply only within the specific living host cell, and it is regarded as intermediate between inanimate and animate object. Mention the salient features of Virus. Visible only under electron microscope, a kind of organism lying in between living and nonliving. b. Absence of cytoplasm, hence 'noncellular'. c. Contains only one type of nucleic acid - DNA or RNA. d. They are infectious, obligatory parasites. Why virus...
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Classification of Plant Kingdom

Classification of Plant Kingdom

Hi viewers: In this blog Classification of Plant Kingdom we will discuss the classification of Plants on the basis of different item. Classification of Plant Kingdom Hi viewers, today we will discuss about the Classification of Plant Kingdom.  The plant kingdom is broadly classified into a) Cryptogam and b) Phanerogam.  The word ''Crypto'' means hidden and the word ''gam'' means flower.  So all the bacteria, algae, fungi, bryophytes and pteridophytes are clubbed under Cryoptogams where flowers are not seen.  And all the Gymnosperms and angiosperms are clubbed under Phanerogams where flowers can be seen. Virus an enigma between living and nonliving Schizophyta- Bacteria Thallophyta- Algae and Fungi Bryophyta- Moss Pterydophyta- Fern Gymnosperm- Cycas and Pinus Monocotyledonous- All the pulses and cereals Dicotyledonous- All the flowering plants Virus an enigma between living and nonliving     PROPERTIES OF VIRUS   It is the bridge between living and non-living It is living when it is present inside the body of the host and non-living when it is outside the body...
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