Biological Classification🟢 Flashcards
Who gave
First Scientific classification
2 Kingdom classification
5 Kingdom classification
Aristotle (trees, shrubs, herbs)
Linnaeus
R.H. Whittaker
The cyanobacteria are unicellular, colonial or filamentous, freshwater/marine or terrestrial algae. The colonies are generally surrounded by __________
gelatinous sheath
Chemosynthetic Autotrophs play great role in recycling nutrients like ________
Nitrogen, Phosphorus, Iron and sulphur
Diseases caused by bacterial pathogens -
Cholera, Plague, Typhoid, Tetanus, citrus canker.
Cell wall of the following is made up of
Monera (Eubacteria)
Fungie
Monera: Peptidoglycan; Non cellulosic (Polysaccharide + amino acid)
Fungie: chitin and polysaccharides
How do Bacteria Reproduce?
By fission (mainly), Produce Spore (in unfavourable conditions) and by sort of sexual reproduction (primitive type of DNA transfer)
What is the smallest living cell known?
Mycoplasma
Can survive without oxygen and lacks cell wall
is pathogenic in plants and animals
as a group, _________ show most extensive metabolic diversity
_________ show great diversity in morphology and habitat
Monera
Fungi
Examples of Chrysophytes and talk about Diatom’s cell wall
ex- Diatoms and Golden algae (desmides)
In diatoms the cell walls form two thin overlapping shells, The walls are embedded with silica and thus, the walls are indestructible.
Example of Dinoflagellates and talk about its cell wall and flagella
Gonyalux, red dinoflagellates which cause red tides, whose toxins can kill small fishes
Cell wall has stiff cellulose plates on the outer surface
Tell Euglenoid’s habitat
Tell about its cell wall
Tell about its Mode of Nutrition
Stagnant fresh water
It doesn’t have a cell wall, instead a flexible protein rich layer called pellicle
Photosynthetic in presence of sunlight and heterotrophic in absence of sunlight
pigments identical to higher plants present
Slime Moulds
Under suitable conditions, form an aggregation called plasmodium which may grow and spread over several feet.
During unfavourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips.
Tell somethings about its spores
The spores possess true walls.
They are extremely resistant and survive for many years, even under adverse conditions.
The spores are dispersed by air currents
Explain the four types of Protozoans
Amoeboid Protozoan: Found in Fresh/Sea water or moist soil, move and hunt by pseudopodia
Marine have silica shells on surface ex- Entamoeba (Parasite)
Flagellated Protozoans: Free living or parasitic, have flagella
ex- Trypanosoma (cause sleeping sickness)
Ciliated Protozoans: Aquatic, actively moving because of 1000s of cilia. Gullet (cavity) opens to the outside of the cell surface and cilial movement causes water with food into gullet. Ex - Paramecium
Sporozoans: Include diverse organisms that have an infectious spore like stage in their life cycle.
Ex- Plasmodium (malarial parasite) causes malaria.
Tell basic morphological and other characteristics of Fungie
Fungi are cosmopolitan and occur in air, water, soil and on animals and plants. they prefer to grow in warm and humid places.
fungi are filamentous their bodies consist of long slender thread like structures called hyphae, network of Hyphae is known as mycelium
Which type of mycelium does the following have
Phycomycetes
Ascomycetes
Basidiomycetes
Deuteromycetes
aseptate and coenocytic mycelium or branched and septate type mycelium
Except Phycomycetes which have Aseptate or coenocytic mycelium, all the others have branched and septate type of mycelium
