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Botany

Biological Classification

54 questions · Click an option and press Check Answer to reveal the result

The principal components of viruses are

Protein & lipid

DNA & RNA

RNA & lipid

Protein & nucleic acid

Monera contain none of the following structures except

Mitochondria

Nucleus

Endoplasmic reticulum

DNA

Match the columns and choose the correct option:

Column I	Column II
A Euglenoids	iRed tide
BGonyaulax	iiSaprophytes
CChrysophytes	iiiStagnant freshwater
DSlime moulds	ivGolden algae

(A)-ii, B-i, C-iv, (D)-iii

(A)-iii, B-iv, C-i, (D)-ii

(A)-iii, B-i, C-iv, (D)-ii

(A)-ii, B-iii, C-i, (D)-iv

The study of Fungi is called

Phycology

Mycology

Palynology

Malacology

From the following choose the characters applicable to the members belonging to the kingdom Animalia I. they are heterotrophic eukaryotic organisms lacking a cell wall II. they directly or indirectly depend on plants for food III. they store food reserves as glycogen or fat IV. their mode of nutrition is either holozoic or holophytic V. they follow a definite growth pattern VI. both lower and higher forms show elaborate sensory and neuromotor mechanism VII. the sexual reproduction is by copulation of male and female followed by embryological development

Only I, II, IV & VI are applicable

Only II, III, V & VI are applicable

Only I, II, III, V, VII are applicable

All are applicable except IV

Fungi store food in the form of

Glycogen

Starch

Glucose

Inulin

Identify the similarity between Euglena and Venus fly trap.

Possess photosynthetic pigments and cell wall.

Can photosynthesise as well as can behave as heterotroph.

Are eukaryotic and multicellular.

Show locomotion and are aquatic.

Statement-I : The bacterial structure is very simple, they are very complex in behaviour.
Statement-II : The archaebacteria are special bacteria since they cannot live in some of the most harsh habitats.

Both Statement I and Statement II are incorrect.

Statement I is correct but Statement II is incorrect.

Statement I is incorrect but Statement II is correct.

Both Statement I and Statement II are correct.

Consider the following:
(A) Chemosynthetic autotrophic bacteria oxidise various inorganic substances and use the released energy for their ATP production.
(B) In bryophytes, zygospores are formed by meiosis and these spores are endogenously produced in sporangium.
(C) Viruses did not find a place in classification since they are not considered truly 'living'.
(D) In lichens, the algal component is known as mycobiont and fungal component is known as phycobiont.
(E) Archaebacteria differ from other bacteria in having a different cell wall structure.
Choose the correct answer from the options given below:

A, C and E are not true

B and D are true

A, C and E are true

A, B, C and E are true

Match the columns-I and II, and choose the correct combination from the options given.

Screenshot 2026-04-20 at 11.01.08 AM.png

a-iii, b-i, c-ii

a-iii, b-ii, c-i

a-ii, b-i, c-iii

a-i, b-iii, c-ii

Generally, viruses that infect plants have

Single stranded RNA

Double stranded RNA

Single stranded DNA

Double stranded DNA

protists

Free living

Parasitic

Symbiotic

Saprophytic

Bacteria reproduce mainly by

Fission

Budding

Fragmentation

Conjugation

Select the correct statement regarding fungi.

The cell walls of fungi are composed of peptidoglycan.

With the exception of yeasts which are unicellular, fungi are filamentous.

The network of hyphae is known as mycelium.

Most fungi are autotrophic and absorb soluble organic matter from living substrates.

Match the following Column I: I Mycoplasma, II Eubacteria, III Halophiles, IV Thermoacidophiles, V Methanogens Column II: P True bacteria, Q Organisms that completely lack a cell wall, R Bacteria living in marshy areas, S Bacteria living in extreme salty areas, T Bacteria living in hot springs

I-Q, II-P, III-T, IV-R, V-S

I-P, II-R, III-Q, IV-S, V-T

I-Q, II-P, III-S, IV-T, V-R

I-S, II-P, III-Q, IV-R, V-T

A cell from an unknown organism is examined under a microscope. It has a membrane bound nucleus, a large central vacuole, chloroplasts and a cell wall. What type of cell is it.

Prokaryotic cell

Bacterial cell

Plant cell

Fungal cell

Match the following Column I: I Rhizopus, II Agaricus silvaticus, III Agaricus campestris, IV Puccinia graminis, V Saccharomyces cerevisiae Column II: K Edible mushroom, L Black rust of wheat, M Bread mould, N Poisonous mushroom, O Baker's yeast

I-O, II-K, III-M, IV-N, V-L

I-L, II-M, III-N, IV-K, V-O

I-M, II-N, III-K, IV-L, V-O

I-M, II-K, III-N, IV-L, V-O

Viruses did not find a place in Whittaker's five kingdom classification since

they are obligatory parasites

they take over the machinery of the host cell to replicate

they remain inactive in the free state

they are not truly living

The group of organisms which are considered as oxygen evolvers:

Chemoautotrophs

Chemoheterotrophs

Chemolithotrophs

Photoautotrophs

Of the following organisms cell wall is present in

Chlamydomonas and paramecium

Amoeba and chlorella

Euglena and Chlamydomonas

Chlamydomonas and chlorella

Chemical constituents of plants such as alkaloids, raphides, crystals, aromatic compounds etc. are used as characteristics for which type of new systematics

Chemotaxonomy

Cytotaxonomy

Karyotaxonomy

Experimental taxonomy

Choose the similar character in given figures

Screenshot 2026-04-20 at 12.05.41 PM.png

(a) Both are protist

(b) Both are unicellular prokaryote

(d) Both are photosynthetic autotroph

a, c, d

a, b, c

a, c

a, b, c, d

An American microbiologist isolated the tobacco mosaic virus in the form of crystals

W.M. Stanley

Iwanowsky

Beijerinek

Louis Pasteur

Yeast comes under

Myxomycetes

Phycomycetes

Ascomycetes

Basidiomycetes

The mycelium in fungi may be septate or aseptate. In which of the following classes the mycelium is aseptate and coenocytic

Phycomycetes

Ascomycetes

Basidiomycetes

Deuteromycetes

Red tide is caused by

Gonyaulax

Ceratium

Noctiluca

Both a & b

The given figure refer to Brown algae. These algae (a), (b) and (c) are respectively identified as -

Screenshot 2026-04-20 at 11.03.06 AM.png

(a)-Fucus, (b)-Dictyota, (c)-Laminaria

(a)-Dictyota, (b)-Laminaria, (c)-Fucus

(a)-Laminaria, (b)-Fucus, (c)-Dictyota

(a)-Laminaria, (b)-Dictyota, (c)-Fucus

Cell wall of bacteria possesses diaminopimilic acid which along with other amino acids forms peptide, will inter connect the glycan part which is known as:

Chitin

Cellulose

Mucin

Murein

All the following can be applicable to protozoans except

they are believed to be primitive relatives of animals

they all are heterotrophs and live as predators or parasites

there are six major groups of protozoans

they are single celled

The oldest kingdom is

Plantae

Protista

Monera

Fungi

Biological classification of plants and animals was first proposed by

Andreas Vesalius

Aristotle

Hippocrates

Theophrastus

Slime moulds are included under

Monera

Protista

Plantae

Fungi

The cell walls of fungi are composed of

Cellulose only

Lignin only

Pectin only

Chitin and polysaccharides

The protozoan Trypanosoma gambiense causes the disease

Elephantiasis

African sleeping sickness

Yellow fever

Typhus fever

All the following statements regarding Diatoms are correct except

most of the Diatoms are photosynthetic

they are found in fresh water as well as in marine environments

the cell walls of diatoms form two thin overlapping shells, which fit together as in a soap box

the walls of diatoms are embedded with chitin and cutin and thus the walls are indestructible.

Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?

Yeast used in making bread and beer is a fungus

Nostoc and Anabaena are examples of protista

Paramecium and Plasmodium belong to the same kingdom as that of Penicilium

Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan

Match List-I and List-II.

List-I	List-II
ADinoflagellates	iPigments are identical to higher plants
BDiatoms	iiCell wall has stiff cellulose plates.
CEuglenoids	iiiChief producers in the oceans
DSlime moulds	ivSpores possess true walls

A – III, B – II, C – IV, D – I

A – II, B – III, C – IV, D – I

A – III, B – IV, C – I, D – II

A – II, B – III, C – I, D – IV

All single celled eukaryotes are placed under

Protista

Monera

Parazoa

Fungi

Prions are:

A single stranded DNA

A single double stranded DNA

Histone and RNA

An infectious protein

Choose the incorrect statement for bacteria that produce large amounts of methane along with CO₂ and H₂ from cellulosic material.

They are found in gut of ruminants.

They are found naturally in sewage water.

They grow aerobically on cellulosic material.

They help in production of gobar gas.

Match Column A with Column B :

Screenshot 2026-04-20 at 10.59.14 AM.png

A-1, B-2, C-3, D-4

A-3, B-1, C-2, D-4

A-2, B-3, C-1, D-4

A-1, B-4, C-2, D-3

The five-kingdom classification was done based on certain characteristics. Which of the following form the chief criteria for the above classification? I) Cell structure II) Body organisation III) Habitat of the organisms IV) Mode of nutrition and reproduction V) Phylogenetic relationships

I, II and IV only

II, III and V only

II, III and IV only

All are included except III

Identify the virus and name the structure marked A, B, C, D and E :

Bacteriophage, A = Head, B = Sheath, C = Collar, D = Tail fibre, E = Tail pin

Bacteriophage, A = Head, B = Collar, C = Base plate, D = Sheath, E = Base Tail fibre

Bacteriophage, A = Head, B = Sheath, C = Tail fibre, D = Collar, E = Tail pin

Bacteriophage, A = Head, B = Collar, C = Sheath, D = Tail fibre, E = Tail pin

The primary grouping of protozoans is based on

size and shape

mode of nutrition

mode of reproduction

locomotory structure

A unicellular organism often considered as a connecting link between plants and animals is

Monocystis

Paramoecium

Euglena

slime mould

The terms such as classification, systematics and taxonomy were given separate meanings by

R.H. Whittaker

Linnaeus

G. Simpson

Julian Huxley

Aristotle classified plants into

Aquatic plants and terrestrial plants

Phanerogamae and cryptogamae

Angiosperms and Gymnosperms

Trees, shrubs and herbs

Presence of stiff cellulose plates on the outer surface of the cell wall is a characteristic feature of

Slime moulds

Dinoflagellates

Euglenoids

Blue green algae

______ is photosynthetic in the presence of sunlight, when deprived of sunlight, it behaves like heterotroph by predating on other small organisms

Vorticella

Euglena

Mucor

Beroe

How many of the following organisms are not placed under Kingdom Protista?
A. Desmids
B. Amoeba
C. Paramoecium
D. Spirogyra
E. Slime moulds
Choose the correct option.

Three

Four

Five

One

In which of the following organisms the body is covered over by a protein rich layer called pellicle

Amoeba

Entamoeba

Euglena

Plasmodium

Trypanosoma gambiense is a

Obligatory monogenetic parasitic

Obligatory digenetic parasite

Facultative monogenetic parasite

Facultative digenetic parasite

A taxonomic system based only on the traits that reflect the order in time in which branches arose in phylogenetic tree is called

phylogeny

cladistics

classical

phenetics

Which of the following statement correct for given figure

Screenshot 2026-04-20 at 12.07.54 PM.png

(a) They are symbiotically associate with fungi to form lichen

(b) They have heterocyst

a only

b, c only

a, b only

a, b, c

Question Palette

Unattempted

Correct

Incorrect

Column I

Column II

A Euglenoids

iRed tide

BGonyaulax

iiSaprophytes

CChrysophytes

iiiStagnant freshwater

DSlime moulds

ivGolden algae

List-I

List-II

ADinoflagellates

iPigments are identical to higher plants

BDiatoms

iiCell wall has stiff cellulose plates.

CEuglenoids

iiiChief producers in the oceans

DSlime moulds

ivSpores possess true walls