2. biological classification

who proposed 3 kingdom classification

earnst haeckel

4-kingdom classification was given by?

h. f. copeland

5 kingdom system was given by?

r.h whittaker

6 kingdom/ 3 domain system was given by?

carl wooese

2 kingdom system was given by?

carolous linnaeus

An organism has chitinous cell wall, absorptive nutrition and no chlorophyll.

fungi

Which kingdom includes organisms having prokaryotic cells?

Monera

name all the 5 kingdoms

Mnera, Protista, Fungi, Plantae, Animalia

name 3 domains

eubacteria, archaea, eukarya

An organism is unicellular, eukaryotic and may be photosynthetic, heterotrophic or mixotrophic. Most likely kingdom?

Protista

The criterion that primarily separates Monera from all four other kingdoms is the absence of a true ___ .

Nucleus

Which kingdom contains organisms with membrane-bound organelles absent, but a cell wall may be present?

Monera

A unicellular organism possesses 2 flagella, one transverse and one longitudinal. Identify it.

Dinoflagellate (protista)

The characteristic pigment responsible for the red colour of many red tides is associated with?

gonyaulax (a dinoflagellate responsible for red tides)

Which group among protists has a silica-embedded cell wall?

diatoms

The chief component deposited in the cell wall of diatoms is?

silica

Diatomaceous earth is mainly formed from the accumulated remains of?

diatoms

A protist has pseudopodia and forms a multinucleate plasmodium. The group is?

slime moulds

Which protistan group is commonly associated with plasmodium formation?

slime moulds

Organisms that possess both plant-like and animal-like characteristics among protists are?

Euglenoids

The cell wall of euglenoids is replaced by a flexible proteinaceous covering called?

pellicle

Euglena can survive in darkness by switching to which mode of nutrition?

heterotrophic

Which kingdom includes organisms that are unicellular but may form colonies, and have a true nucleus?

protista

A bacterium survives extreme salt concentration, high temperature and acidic conditions

Archaebacteria- halophiles

The unusual cell wall of archaebacteria helps them survive mainly in?

extreme habitats

Methane-producing archaebacteria are commonly found in the gut of which domestic animal?

ruminants

The major gas released by methanogens is?

methane

Which bacterial group is primarily responsible for converting atmospheric nitrogen into usable nitrogen compounds in some ecosystems?

cyanobacteria

A cyanobacterium possesses specialised cells for nitrogen fixation. These cells are called?

heterocysts

Nostoc and Anabaena are important examples of bacteria showing?

nitrogen fixation

Which bacterial group is photosynthetic and oxygenic, despite belonging to Monera?

cyanobacteria

A bacterium lacks chlorophyll but obtains energy by oxidising inorganic substances such as ammonia, nitrites or sulphur. This mode is?

chemoautotroph

Which bacterial form is spherical rather than rod-shaped or spiral?

coccus

Bacteria occurring in grape-like clusters are called?

staphylococcus

Bacteria arranged in a chain of spherical cells are called?

streptococci

Which kingdom contains organisms that have chitin in their cell wall but store food mainly as glycogen rather than starch?

fungi

Bacteria having a comma-shaped body are called?

vibrio

Bacteria having a spiral-shaped body are called?

spirilla

Bacteria that can synthesise their own food using inorganic substances are?

autotrophic

Which bacterial group possesses mycelium-like filaments and is important in antibiotic production?

actinomycetes

on what basis did linnaeus classified organisms into 2 kingdoms?

presence/ absence of cell wall

Aristotle was the father of _________.

Biology and Zoology

what were the criteria for 5-kingdom classification?

Cell structure

Thallus organisation

Mode of nutrition

Reproduction

Phylogenetic relationship

what is something that is present in archaea that is absent in bacteria?

archaea have histone-like proteins and some noble features

specialized cell of nostoc and anabaena fix nitrogen are known as?

heterocyst

Which one is correct about reproduction in bacteria?

a) mainly by binary fission

b) spores are formed under unfavourable conditions

c) sexual reproduction by transfer of DNA from one to another

d) all of these

d) all of these

mode of nutrition in euglenoids is?

mixotrophic

what are the uses of diatomaceous earth?

• polishing

• filtration of oils

• filtration of syrups

mostly marine, photosynthetic, and biflagellate organisms are

a) diatoms

b) desmids

c) dinoflagellates

d) euglenoids

c) dinoflagellates

euglenoids have a flexible body called?

pellicle

‘sleeping sickness’ is caused by?

Trypanosoma

habitats of phycomycetes are:

a) aquatic

b) decaying wood in moist and damp place

c) obligate parasites in plants

d) all of these

d) all of these

which of the following fungi only reproduce by asexual spores conidia?

a) alternaria

b) colletotrichum

c) trichoderma

d) all of these

d) all of these

the virus envelope is known as?

capsid

archaebacteria differ from eubacteria in _________.

cell membrane

chromatophores take part in _______.

photosynthesis