CH BIOLOGICAL CLASSIFICATION Flashcards
Aristotle classified animals into
- Anaima- RBCs are absent
- Enaima- RBCs are present
Two kingdom system of classification did not distinguish between
- Prokaryotes and Eukaryotes
- Unicellular and Multicellular
- Photosynthetic and Non Photosynthetic
Six Kingdom Classification was Given by _______. It is also k/a
Carl Woese
3 Domain System - Eukarya, Archae, Bacteria
The 3 domains are said to be formed from a common ancestor k/a
Progenote
Who gave the Five kingdom system of Classification
R.H. Whittaker
The first inhabitants of Earth belong to kingdom __________ and are _________
- Monera
- Bacteria
In which Bacteria Cell Wall is Absent
Mycoplasma
The most Common Form of Bacteria is
Rod Shaped Organism BACILLUS
The pigment present in Bacteria for Photosynthesis are
- Bacteriochlorophyll also k/a Bacteriopurpurin
- Bacteriovirdin
Purple Sulphur Bacteria, eg. _________ contains pigment _________
- Thiospirillum
- Bacteriochlorophyll or Bacteriopurpurin
Green Sulphur Bacteria, eg. ___________ contains pigment _______
- Chlorobium limicola
- Bacteriovirdin
The sources of Electron in Bacteria is
- Thiosulphate
- Hydrogen Sulphide
Chemosynthetic autotrophs do not utilise ________ as energy
Light
Which bacteria on the basis of mode of nutrition are the most abundant in nature
Heterotrophic
The most common mode of asexual reproduction in bacteria is
Binary Fission
What are the steps involved in Binary Fission
- Replication of DNA
- Mesosome division and membrane formation
- Cross Wall Formation
What is Endospore?
Cells of certain bacteria form a thick walled, highly resistant bodies within the cell called endospore
What are the ways in which Sexual Recombination occurs in bacteria
- Conjugation
- Transduction
- Transformation
Archaebacteria are Gram positive or Gram negative Bacteria
Gram Negative
The cell wall in Archaebacteria contains
NAT- N- acetyltalosamiuronic acid
Describe the mode of Nutrition, mode of Respiration and Examples of
1. Methanogens
2. Thermoacidophiles
3. Halophiles
- Methanogens - Chemosynthetic autotrophs, obligate anaerobe, Methanococcus, Methanobacterium
- Thermoacidophiles -Chemosynthetic autotroph, facultative anaerobes, Thermoplasma and Thermoproteus
- Halophiles- Heterotrophs, Facultative anaerobes , Halococcus, Halobacterium
Bacteria involved in vinegar production
Acetobacter aceti
Petroleum pollution controlling bacteria
pseudomonas putida (super bug)
Bacteria involved in retting of fibers
- Clostridium perfringens
- Pseudomonas fluorescence
bacteria involved in curing of tea leaves and tobacco leaves respectively
- Micrococcus candidans
- Bacillus megatherium
Bacteria involved in curd, cheese, yogurt production
Lactobacillus, Streptococcus lactis
Symbiotically Nitrogen fixing bacteria
Rhizobium, Xanthomonas, Frankia
Free living Nitrogen Fixing bacteria
Azotobacter, Clostridium, Klebsiella, Beijerinckia
Ammonifying bacteria examples
Bacillus vulgaris, B .ramosus
Bacteria that produce antibiotics
- Bacitracin - bacillus licheniformis
- Subtilin - B. subtilis
Identify the bacteria causing the following disease
1. Citrus Canker
2. Tetanus
3. Typhoid
4. Cholera
- Xanthomonas citri
- Clostridium tetani
- Salmonella typhi
- Vibrio cholera
Halophiles contain a pigment in the membrane that makes it purple , which is
Bacterio-rhodopsin
Cyanobacteria are also k/a
Blue Green Algae
Cyanobacteria are Gram Positive or Gram Negative bacteria
Gram negative bacteria
the most primitive organism to perform oxygenic photosynthesis
BGA
BGA living endozoically inside protozoans are called
Cyanelle
Nostoc is a
Filamentous Blue green Algae
Nitrogen Fixation in Nostoc manly occurs in large specialised cells k/a
Heterocyst
What are the different modes of Asexual Reproduction in BGA
Binary fission
Hormogonia
heterocyst
fragmentation
Akinetes
What is the reason for Hormogonia
Due to formation of biconcave, mucilage filled dead cells called necridia in b/w living cells of trichome, the filament breaks into Hormogonia
BGA played an important role in the evolution of which life form
Aerobic Life Form
Which kingdom shows the most extensive metabolism
Bacteria
Source of SCP or protein rich animal food is
Spirulina
Bacteria are __________ in structure and __________ in behaviour
Bacteria are simple in structure and complex in behaviour
Why are Cyanobacteria not considered as Virus
As they can replicate in abiotic medium having sterols
which Cyanobacteria fix nitrogen non symbiotically in rice field
Tolypothrix and Aulosira
what is the mode of Nutrition in Mycoplasma
Heterotrophic mostly parasitic and a few are Saprophytic
Which Bacteria is Pleomorphic
Mycoplasma
PPLO stands for and why is it called so
Pleuropneumonia like organism as it was found from pleural fluid of cattles suffering from pleuropneumonia
Who discovered mycoplasma
E. Nocard and E.R. Roux
_______ are said to be the ancestor of all multicellular eukaryotes
Protista
the term protista was coined by
Ernst Haeckel
3 Kingdom system of classification was given by and it included
Ernst Haeckel
kingdom Plantae, Animalia, Protista
Protozoans are classified into
- Flagellated Protozoans
- Ciliated protozoans
- Amoeboid Protozoans
- Sporozoans
protistan algae constitute the major portion of
phytoplanktons
Photosynthetic Protist are subdivided into
- Diatoms
- Dinoflagellates
- Euglenoids
_________ are responsible for almost 50% of the organic matter synthesized in the Biosphere
Diatoms
Diatoms lack flagella except in their _________ stage
reproductive stage
which Protista is a good indicator of water pollution
Diatoms
the cell wall of Diatoms gives _______ like appearance. the upper layer and lower layer are k/a
soap box appearance
1. Epitheca and Hypotheca
Diatoms are called
Crysophytes
the cell wall in Diatoms is made up of ______ and is responsible for forming
Silica
Diatomaceous earth/ diatomite/ kieselguhr
the reserve food in diatoms is _______ and a polysaccharide k/a
oils
Leucosin (chrysolaminarin)
What are the examples of Photosynthetic protists
- Diatoms
- Dinoflagellates
- Euglenoid
The resting spores in Diatoms are k/a
STATOSPORE
The mode of nutrition in Diatoms is ______
Holophytic or photoautotrophic
the chief producers of ocean are
Chrysophytes or Diatom
The pigments present in Diatoms are
chlorophyll a and c, beta carotene, diatoxanthin, diadinoxanthin and FUCOXANTHIN
The body of dinoflagellates is enclosed by a rigid coat called
theca or lorica
The pigments in Dinoflagellates are
chlorophyll a and c, beta and alpha carotene, xanthophyll
The reserved food in dinoflagellates is
Carbohydrates and oil
Dinoflagellates release a toxin k/a ________ in the sea water which cause the disease _____ in man
Saxitoxin
PSP Paralytic shell fish poisoning