BIOLOGICAL CLASSIFICATION Flashcards
Earliest classification based on:
Human needs ( Food shelter clothes)
Cell wall of Monera
Polysaccharides and amino acids (non-cellulosic)
2 kingdom Classification by and on the basis of~
Linnaeus on the basis of Cw
Nuclear Membrane absent in only 1 kingdom?
Monera
Fungi Cell wall:
Chitin
3 kingdom Classification given by:
Ernst Haeckel
Order in which kingdoms were added:
Plantae and Animalia initially,
Protista Monera Fungi
Bacterias are sole members of:
Monera Kingdom
Oldest Moneras? Where are they found?
Archeabacteria.
Extreme habitats ( deep oceans, lava, deserts)
Criteria used by Whittaker for 5 KC:
Phylogeny
Reproduction
Cell structure
Body Organization
Nutrition
4 KC given by:
Copeland
Mode of Nutrition in Monera
Auto ( Photo and Chemo)
Hetero (Sapro and Para)
Mode of Nutrition in Protista:
Auto ( Photo)
Hetero
Mode of Nutrition in Fungi:
Hetero ( Sapro and Para)
Mode of Nutrition in Plantae:
Auto ( Photo)
Mode of Nutrition in Animalia:
Hetero ( sapro and holo)
Cell wall absent in:
Animalia
Drawbacks of 2 KC:
Did not differentiate b/w:
- Unicellular (chlamydomonas) and Multicellular (spirogyra)
- Prolaryotes and Eukaryotes
- Autotrophs (green plants) and Heterotrophs (fungi)
Who gave 6 KC:
- Carl Woose
- Divided kingdoms into 3 domains:
a) Archae
b) Bacteria
c) Eukaryo
Which kingdom’s boundaries are not well defined:
Protista
Flagella present in which shape of Bacteria?
Spirilla
Structure simple Behaviour Complex?
Bacteria
5 types of Protistas:
- Chrysophytes
- Dinoflagellates
- Slime Moulds
- Euglenoids
- Protozoan
Shape of Bacteria that causes cholera?
Vibrio
Nucleus and mb organelles present in:
Protista
Protistas have flagella or cilia?
Yes both
3 types of Archeabacteria?
- Halogens => extreme salty areas
- Thermo-acidophiles => hot molten lava, hot sulphur springs
- Methanogens => Gut of Ruminant animals and Marshy areas
Cw of Eubacteria?
Rigid made of Peptidoglycan
Smallest Living Organism:
Mycoplasma
Forms algael bloom in polluted waters?
Bg algae/cyanobacteria
Can pass through bacteria proof filters?
Mycoplasma
Heterocyst perform?
No² Fixation by nitrogenase enzyme
How have Heterocysts specialized?
Cells perform Co² fixation. HC specialize by:
1. Being thick Walled => O² inside ×
2. Losing Photo system 2 => H²O splitting ×
Anaerobic conditions created
Methanogens used in:
- Sewage Treatment
- Producing Biogas
Habitats of Cyanobacteria
FW/ marine/ terrestrial
Chlorophyll a present in which Organism belonging to K Monera?
Cyanobacteria
Measurements of Mycoplasma?
A) 0.1 mm ( diag.)
B) 0.3 mm (theory)
Mycoplasma pathogenic to?
P and a
Pplo?
Pleuro Pneumonia like organisms.
Mycoplasma
Mycoplasma?
1. Cw
2. Aerobic conditions
Absent
Facultative anaerobes
Majority of Monera are:
Auto/Hetero
Hetero
3 types of Heterotrophs?
- Saprophytic => decomposers
- Parasitic => citrus canker, cholera, tetanus
- Symbiotic => Rhizobium
Anaerobic Photoautotrophs?
Purple synthetic bacteria
Green synthetic bacteria
Anaerobic Photoautotrophs?
Purple synthetic bacteria
Green synthetic bacteria
Gas Vacuoles in Photoauto?
Present
Chemoauto help recycle?
Minerals like P, Fe, S
Sexual Reproduction In Monera?
Some sort of primitive transfer of DNA. True S Rep. Absent
Chemoauto ____ chemical reactions and use relameased energy to produce ____
Oxidize
ATP
A Rep. In favourable conditions
Dna replication and then binary fission
A Rep. In unfavourable conditions
Spore Formation
Cheif producers of ocean
Chrysophytes
What is a Gonyaulax ?
Red Dinoflagellate that undergoes rapid multiplication causing occurrence of red tides
Bioluminiscense present in which Protista?
Dinoflagellates
Slime Moulds during suitable and unsuitable conditions?
Suitable => aggregations called Plasmodium.
Non Suitable => plasmodium differentiates into fruiting bodies with spores on tip.
Cell Wall in Chrysophytes.
Chrysophytes => 2 thin overlapping shells that fill like a soap box made of silica (indestructible)
Cell Wall in Dinoflagellates.
Stiff cellulosic plates on outer surface.
Cell Wall in Euglenoids.
Absent.
Instead there is protein rich layer called “pellicle” which makes it flexible.
Cell Wall in Protozoan.
Absent
Uses of Chrysophytes?
It is gritty.
=> polishing
=> filtration of oils and syrups
Silica accumulation results in?
Diatomaceous earth.
Protists that is primitive relative of animals
Protozoan
Types of Chrysophytes
Diatoms
Desmids (golden algae)
Habitat of Chrysophytes, Dinoflagellates and Euglenoids.
Fw and Marine
Marine waters
Stagnant FW
Flagella of D and E?
1 longitudinal 1 transversal
1 long 1 short
Protists that shows different colours.
Dinoflagellates ( R Y B G Brown)
Protists with photosynthetic pigment like higher plants
Ch A and B in Euglenoids
Mixotrophic nutrition is shown by?
Euglenoids
Sunlight + => photosynthesis
Sunlight - => heterotrophic
(Connecting link b/w plants and animals)
Pellicle absent in which protozoan.
Amoeba
Trypanosoma causes?
Flagellated Protozoan, sleeping sickness
Leishmania causes?
Flagellated Protozoan, Kala Azar
Pseudopodia of Amoeba helps in?
Ingestion and Locomotion
Marine amoeba have?
Silica shells on surface
Which plasmodium causes malaria ?
Most notorious, Plasmodium Falciparium
Which Protozoan have infectious spore like stage in their life cycle.
Sporozoan
Ciliated Protozoan functioning ?
Opening surface called “gullet” lined with cilia whose movt. Pushes water laden with food to enter the gullet
Protozoan is divided on the basis of?
Locomotion
1. Amoeboid => pseudopodia
2. Flagellates => Flagella
3. Ciliated => Cilia
4. Sporozoqn => absent.
Habitat of Protozoan?
Amoeboid => Fw/sw/ moist soil
Flagellated => free living/parasite
Ciliated => Aquatic
Sporozoan => endoparasite
Parameocium is an example of?
Ciliated Protozoan
Exception to Multicellular build up of Fungi
Yeast
Antibodies providing Fungi
Pencillium
Disease causing Fungi?
Puccinia
Toadstool
Parasitic Fungi
Eatable Fungi
Mushroom Yeast
Fungi grow in ?
Warm humid places
What are Hyphae?
Long slender thread like str. Emerging from spores
Network of Hyphae?
Mycelium
2 types of Hyphae?
Septate => hv septa/cross walls (higher fungi) (ABD)
Fungi types of nutrition?
Saprophytic parasitic or symbiotic
Aseptate hyphae?
Called coenocytic. Long tube filled with multi nucleated Cytoplasm.
Lower fungi.
Septatw fungi?
Septa/cross walls.
Higher fungi A B D
3 types of Fungal Reproduction.
Vegetative
Asexual
Sexual
Vegetative Reproduction in fungi?
Fragmentation
Fission
Budding
Asexual Reproduction in fungi?
Spores formed from mitosis.
Zoospore => motile/flagellated. Endogenous. P.
Sporangiospore => aka aplanospore. Non motile endogenous. P.
Conidia => non-motile endogenous (AD)
Sexual Reproduction in fungi?
Oospore (P)
Zygospore (P)
Ascospore (A)
Basidiospore (B)
Deuteromycetes do not show which form of Reproduction?
Sexual
Basidiomycetes do not show which form of Reproduction?
Asexual
Sexual Cycle of Fungi?
Two septate bound nucleus act as gamete and fuse. PLASMOGAMY (fusion of protoplasm b/w two motile or non motile gametes).
Dikaryotic stage achieved which may be short lived (A) or long lived (B)
KARYOGAMY (fusion of nucleus leading to zygote formation). Zygote formed.
MEIOSIS OF ZYGOTE ( haploid spores produced) 1 zygote has 4 daughter cells.
Fruiting bodies post sexual Reproduction may be?
Ascocarp
Basidiocarp
Describe Ascocarp?
Consist of:
1. Ascus ( a sac with ascospores in it)
2. Stalk
Describe Basidiocarp?
Consist of:
1. Basidium (club shaped with basidiospores on it)
2. Stalk
Phycomycetes also known as?
Algal fungi
Ascomycetes also known as?
Sac Fungi
Deuteromycetes also known as?
Imperfect Fungi
Sexual Reproduction in ascomycetes?
Via Ascospores
Sexual Reproduction in phycomycetes?
Zygospores
Sexual Reproduction in basidiomycetes?
Basidiospores
Sexual Reproduction in deuteromycetes?
Absent
Mycelium in Phycomycetes?
Aseptate, Coenocytic
Mycelium in Ascomycetes?
Septate Branched
Mycelium in Basidiomycetes?
Septate Branched
Mycelium in deuteromycetes?
Septate Branched