Match column-I (Characters/feature) with column-II (examples) and choose the correct option.
| Column-I | Column-II |
|---|---|
| (Characters/features) | (Examples) |
| A. Red dinoflagellates | I. Rhizopus |
| B. Unicellular fungi used to | II. Gonyaulax make bread and beer |
| C. Source of antibiotics | III. Yeast |
| D. Bread mould | IV. Penicillium |
A III; B II; C I; D IV
A II; B III; C I; D IV
A II; B III; C IV; D I
A II; B IV; C III; D I
Correct Answer :
C. A II; B III; C IV; D I
Rhizopus is a genus of common saprophytic fungi on plants and specialized parasites on animals. They are found on a wide variety of organic substrates, including mature fruits and vegetables, jellies, syrups, leather, bread, peanuts and tobacco. Rhizopus stolonifer is more commonly known as black bread mold. Gonyaulax is one of the dinoflagellates responsible for the advent of red tides. Yeast is a unicellular fungus, used to make bread and beer. Penicillium is a genus of ascomycetous fungi of major importance in the natural environment as well as food and drug production. Some members of the genus produce penicillin, a molecule that is used as an antibiotic, which kills or stops the growth of certain kinds of bacteria inside the body.
Related Questions
Which of the following group of kingdom protista is being described by the statements given below ?
(i) This group includes diatoms and golden algae.
(ii) They are microscopic and float passively in water currents (plankton).
(iii) Most of them are photosynthetic.
(iv) They have deposits in their habitat; this accumulation over billion of years is referred to as diatomaceous earth.
Dinoflagellates
Chrysophytes
Euglenoids
Slime moulds
Which of the following statement(s) is/are correct ?
(i) Reproduction in fungi can take place by vegetative means fragmentation, fission and budding.
(ii) Fusion of two nuclei is called plasmogamy.
(iii) Fusion of protoplasms between two motile or nonmotile gametes is called karyogamy.
(iv) Meiosis in zygote results in diploid spores.
Only (i)
Both (ii) and (iii)
(ii), (iii) and (iv)
All of these
Protists are
single-celled eukaryotes.
multicellular eukaryotes.
single-celled prokaryotes.
single-celled akaryote.
Bacteria lack alternation of generation because there is
neither syngamy nor reduction division.
no distinct chromosomes.
no conjugation.
no exchange of genetic material.
Which of the following is a parasitic fungi on the mustard plant ?
Albugo
Puccinia
Yeast
Ustilago
Which class of fungi lacks sex organs but the process of plasmogamy is brought about by fusion of two vegetative or somatic cells of different strains or genotypes?
Sac fungi
Bracket fungi
Imperfect fungi
Phycomycetes
Choose the correct names of the different bacteria given below according to their shapes.
A – Cocci, B – Bacilli, C – Spirilla, D – Vibrio
A – Bacilli, B – Cocci, C – Spirilla, D – Vibrio
A – Spirilla, B – Bacilli, C – Cocci, D – Vibrio
A – Spirilla, B – Vibrio, C – Cocci, D – Bacilli
The given statements are some characters of a particular group of Kingdom protista.
(i) Most of them are fresh water organisms found in standing water.
(ii) They have a protein rich layer (called pellicle) which makes their body flexible.
(iii) They have two flagella, a short and a long one.
(iv) Though they are photosynthetic in the presence of sunlight, but in the absence of sunlight they behave like heterotrophs by predating on other smaller organisms.
Identify the correct group on the basis of these characters.
Protozoans
Chrysophytes
Slime moulds
Euglenoids
A fungus contains cells with two nuclei from different genomes. The nuclei do not fuse but divide independently and simultaneously as new cells are formed. This fungus belongs to
phycomycetes
zygomycetes
deuteromycetes
basidiomycetes
Dikaryon formation is the characteristic feature of
ascomycetes and basidiomycetes.
phycomycetes and basidiomycetes.
ascomycetes and phycomycetes.
phycomycetes and zygomycetes.
Protozons are not included in kingdom animalia because they are
mostly asymmetrical.
unicellular eukaryotes.
heterotrophic in nature.
multicellular prokaryotes.
Bacteria were regarded to be plants because
some of them are green in colour.
they are present every where.
some of them cannot move.
they have a rigid cell wall.
Bacteria are found to be primitive organisms because they
are small, microscopic which are not seen with naked eye.
cause serious diseases to human being, domesticated animals and crop plants.
produce endospores which are very resistant to adverse conditions.
possess incipient nucleus and show amitotic division.
An X reproduces in such a great numbers that the water may appearred, producing a red tides and kills large marine animals like Z. X belongs to Y. Identify X, Y and Z.
X - Gonyaulax ; Y - Dinoflagellates; Z - Fishes
X - Paramecium ; Y - Protozoa ; Z - Crocodiles
X - Trypanosoma ; Y - Protozoa ; Z - Frogs
X - Plasmodium ; Y - Euglenoids ; Z - Oysters
Ustilago causes plant diseases (called smuts) because
they parasitize on cereals.
they lack mycelium.
they develop sooty masses of spores.
their affected parts becomes completely black.
Which of the following is not a viral disease ?
AIDS and mumps
Small pox and herpes
Influenza
Cholera
Mycorrhizae are useful for plants because they
fix atmospheric nitrogen.
enhance absorption of nutrients from the soil.
kill insects and pathogen.
provide resistance against abiotic stresses.
Which of the following kingdom does not have nuclear membrane ?
Protista
Fungi
Monera
Plantae
How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosomes, Porphyra, Wolffia
Four
Five
Six
Three
Which of the following statement is correct for dinoflagellates flagella ?
A single flagellum lies in the transverse groove between the cell plates.
A single flagellum lies in the longitudinal groove between the cell plates.
Two flagella, one lies longitudinally and the other transversely in a furrow between the wall plates.
Flagella are absent.
Match the class of fungi given in column I with their examples given in column II and choose the correct option
| Column-I | Column-II |
|---|---|
| (Class of fungi) | (Examples) |
| A. Ascomycetes | I. Rhizopus |
| B. Basidiomycetes | II. Penicillium |
| C. Deuteromycetes | III. Ustilago |
| D. Phycomycetes | IV. Alternaria |
A IV, B III, C I, D II
A II, B III, C IV, D I
A IV, B I, C II, D III
A III, B IV, C II, D I
Match the class of fungi given in column-I with their common name given in column-II and select the correct option.
| Column-I | Column-II |
|---|---|
| (Class of fungi) | (Common name) |
| A. Phycomycetes | I. Sac fungi |
| B. Ascomycetes | II. Algal fungi |
| C. Basidiomycetes | III. Fungi imperfecti |
| D. Deuteromycetes | IV. Club fungi |
A II, B I, C IV, D III
A II, B IV, C I, D III
A IV, B I, C II, D III
A IV, B III, C II, D I
Which of the following groups of protozoan is not correctly matched with its feature?
Amoeboid - Marine forms have silica shells on their surface.
Flagellated - Either free living or parasitic.
Ciliated - Actively moving organisms due to presence of cilia.
Sporozoans - Move and capture their prey with the help of false feet.
The symbiotic association of fungi and algae is called
lichen
mycorrhiza
rhizome
endomycorrhiza
Bacteria and yeast are similar in all the following features except that
both are unicellular.
both are prokaryotes.
both are capable of causing fermentation.
both produce spores.
Which of the following processes involved in the reproduction of protists ?
Binary fission and budding
Cell fusion and zygote formation
Spore formation and cyst formation
All of the above
The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as
cyanobacteria
archaebacteria
chemosynthetic autotrophs
heterotrophic bacteria
When a moist bread is kept exposed in air, it becomes mouldy and black because
spores are present in the water.
spores are present in the bread.
spores are present in the air.
the bread decomposes.
How many bacteria are produced in four hours if a bacterium divides once in half an hour ?
8
64
16
256
The bacteria which oxidize various inorganic substances and use the released energy for their ATP production are called _______________.
Archaebacteria
Heterotrophic bacteria
Photosynthetic autotrophic bacteria
Chemosynthetic autotrophic bacteria