Bio Classification Flashcards
The character that united bga mosses ferns etc. in kingdom plantar was
On basis of the cell walls
Chlorella and spirogyra are placed under kingdom
Protista
Bacteria show most extensive metabolic diversity
True
Cyanobacteria are unicellular colonial and filamentous freshwater/ marine/ terrestrial alga
True
Chemosynthesis autotrophic bacteria help in recycling nutrients like nitrogen sulphur iron and phosphorus
True
Heterotrophic bacteria do not help in nitrogen fixation in legumes
False
The organisms that do not posses a cell wall and can survive without oxygen
Mycoplasma
Members of protista are primarily
Aquatic
Float passively in water currents (planktons)
Crysophytes
Diatoms are chief producer in the oceans
True
Cell wall of dinoflagellates have a stiff cellulose plate in the outer side
True
Red tides are formed due to
Red Dinoflagellate— gonyaulax
Euglenoids are found in stagnant water
True
The members of this group are rather free living or parasitic
Flagellated protozoans
Long slender thread like structure in the body of a fungi
Hyphae
Ascomycetes and basidiomycetes have what feature in common?
They both have a dikaryotic phase
Phycomycetes produce asexual spores endogenously or exogenously ?
Endogenously on sporangiophore
Parasitic fungi on mustard.
Albugo
Ascomycetes are coprophilous
True
Ascomycetes produce asexual spore…exo or endogenously?
Exogenously on conidiophores
Sexual spores…..exo…or endo
Exogenously on sac like ascii
Basidiomycetes lack asexual spores …but fragmentation occurs
True
Talk about sex organs if basidiomycetes
Sex organs of basidiomycetes are absent but fusion of vegetative or somatic cells of different strains or genotype results in plasma gamy and formation of basidium….produced exogenously on basidium
Viruses viroids and prions are acellular
True
Viruses that infect plants are
Ss rna
Bacteriophages are
Ds DNA
Earliest attempt on bio classification was by
Aristotle
2 kingdom system of classification given by
Linnaeus
