Online Test — Biological Classification
15 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 15
The Five Kingdom Classification was proposed by:
Linnaeus
R.H. Whittaker
Aristotle
Ernst Haeckel
Explanation: R.H. Whittaker proposed the Five Kingdom system in 1969.
Question 2 of 15
Which kingdom contains all the prokaryotes?
Protista
Fungi
Monera
Plantae
Explanation: Kingdom Monera contains all prokaryotic bacteria.
Question 3 of 15
Methanogens, halophiles and thermoacidophiles are examples of:
Eubacteria
Archaebacteria
Protozoans
Fungi
Explanation: These extremophiles are archaebacteria.
Question 4 of 15
Photosynthetic blue-green algae that can also fix nitrogen are the:
Mycoplasma
Cyanobacteria
Slime moulds
Diatoms
Explanation: Cyanobacteria are photosynthetic eubacteria that can fix nitrogen.
Question 5 of 15
The bacteria that lack a cell wall completely are:
Cyanobacteria
Mycoplasma
Archaebacteria
Bacillus
Explanation: Mycoplasmas have no cell wall and are the smallest living cells.
Question 6 of 15
Kingdom Protista is made up of:
Single-celled eukaryotes
Prokaryotes
Multicellular plants
Multicellular animals
Explanation: Protista consists of single-celled eukaryotes.
Question 7 of 15
Diatoms have cell walls made of:
Chitin
Silica
Cellulose only
Protein
Explanation: Diatom walls are made of indestructible silica.
Question 8 of 15
Red tides in the sea are caused by:
Euglenoids
Slime moulds
Dinoflagellates
Diatoms
Explanation: Rapidly multiplying red dinoflagellates cause red tides.
Question 9 of 15
Euglena is considered mixotrophic because it:
Only photosynthesises
Photosynthesises in light but is heterotrophic in the dark
Has a cell wall of chitin
Is a prokaryote
Explanation: Euglena shows both plant-like and animal-like nutrition (mixotrophic).
Question 10 of 15
Plasmodium, which causes malaria, belongs to which protozoan group?
Amoeboid
Flagellated
Ciliated
Sporozoans
Explanation: Plasmodium is a sporozoan protozoan.
Question 11 of 15
The thread-like filaments that make up a fungal body are called:
Hyphae
Cilia
Pellicles
Capsids
Explanation: Hyphae are the filaments; their network is the mycelium.
Question 12 of 15
The cell wall of fungi is made of:
Cellulose
Silica
Chitin
Peptidoglycan
Explanation: Fungal walls are made of chitin.
Question 13 of 15
A lichen is a symbiotic association between a fungus and a/an:
Virus
Alga (or cyanobacterium)
Animal
Protozoan
Explanation: Lichens are a fungus + alga symbiosis; they are good pollution indicators.
Question 14 of 15
Viruses are made of a protein coat enclosing:
Only protein
Nucleic acid (DNA or RNA)
Chitin
Silica
Explanation: A virus has a protein capsid surrounding DNA or RNA.
Question 15 of 15
Prions are infectious agents made of:
Abnormally folded protein only
Free RNA only
DNA and protein
Cellulose
Explanation: Prions consist of abnormal protein only and cause diseases like mad-cow disease.