Which of the following statement(s) is/are correct about ascomycetes ?
(i) Neurospora, which is used in biochemical and genetic work is a member of this class.
(ii) They are mostly multicellular, e.g., Yeast, or rarely unicellular, e.g., Penicillium.
(iii) They are saprophytic, decomposers, parasitic or coprophilous.
(iv) Some examples are Aspergillus, Claviceps and Neurospora.
Both (i) and (ii)
Only (ii)
(i), (iii) and (iv)
All of these
Correct Answer :
C. (i), (iii) and (iv)
Ascomycetes are commonly known as sac-fungi. They are mostly multicellular e.g., Penicillium or rarely unicellular, e.g., Yeast.
Related Questions
Choose the correct statements (i v) regarding mycoplasma
(i) Mycoplasma has no cell wall.
(ii) Mycoplasma is the smallest living organism.
(iii) Mycoplasma cannot survive without O2.
(iv) Mycoplasma are pathogenic in animals and plants.
(v) A sort of sexual reproduction occurs in bacterium by adopting a primitive DNA transfer from one bacterium to the other.
Only (iii)
(i), (iii) and (v)
(i), (ii), (iv), and (v)
All of the above
Match the characters given in column I with their examples given in column II.
| Column I | Column II |
|---|---|
| A. Long slender thread | (i) Lichen like structures |
| B. Association of fungi with | (ii) Mycorrhiza roots of higher plants |
| C. Parasitic fungi on mustard | (iii) Neurospora |
| D. Fungi extensively used in | (iv) Albugo biochemical and genetic work |
| E. An association in which | (v) Hyphae algal component is called phycobiont |
A-(v) B-(ii) C-(iv) D-(iii) E-(i)
A-(iii) B-(i) C-(iv) D-(ii) E-(v)
A-(ii) B-(i) C-(iii) D-(v) E-(iv)
A-(iii) B-(ii) C-(iv) D-(i) E-(v)
Which of the following is/are example(s) of deuteromycetes?
Alternaria
Colletotrichum
Trichoderma
All of these
Protista includes
unicellular eukaryotes with well-defined nucleus only.
unicellular prokaryotes with membrane bound organelles.
unicellular eukaryotes with well-defined nucleus and membrane bound organelles.
both unicellular and multicellular eukaryotes with welldefined nucleus and membrane bound organelles.
Which of the following is not a viral disease ?
AIDS and mumps
Small pox and herpes
Influenza
Cholera
The given characters are seen in which of the following group?
(i) Unicellular, colonial, filamentous, marine or terrestrial forms.
(ii) The colonies are surrounded by a gelatinous sheath.
(iii) Some can fix atmospheric nitrogen in specialized cells called heterocysts.
(iv) They often form blooms in water bodies.
Archaebacteria
Cyanobacteria
Chrysophytes
Dinoflagellates
Bladderwort and Venus fly trap are examples of
insectivorous plants
parasitic plants
N2 rich plants
aquatic plants
Identify the following figures A, B and C.
A – Euglena, B – Paramecium, C – Agaricus
A – Euglena, B – Planaria, C – Agaricus
A – Planaria, B – Paramecium, C – Agaricus
A – Euglena, B – Paramecium, C – Aspergillus
Read the following statements and answer the question.
(i) Some members are saprophytes or parasites while a large number of them are decomposers of litter and help in mineral cycling.
(ii) They reproduce only by asexual spores known as conidia.
(iii) Mycelium is septate and branched.
(iv) Alternaria, Colletotrichum and Trichoderma are examples of this class.
Which of the following class of fungi is being described by the above statements ?
Phycomycetes
Deuteromycetes
Basidiomycetes
Ascomycetes
Which of the following is an example of amoeboid protozoans ?
Trypanosoma
Paramecium
Gonyaulax
Entamoeba
Match the terms given in column-I with their examples given in column-II and choose the correct option
| Column-I | Column-II |
|---|---|
| (Terms) | (Examples) |
| A. Ascus | I. Spirulina |
| B. Basidium | II. Penicillium |
| C. Protista | III. Agaricus |
| D. Cyanobacteria | IV. Euglena |
| E. Animalia | V. Sponges |
A II, B III, C IV, D V, E I
A I, B II, C III, D V, E IV
A II, B V, C III, D I, E IV
A II, B III, C IV, D I, E V
A virus can be considered a living organism because it
responds to touch stimulus
respires
reproduces (inside the host)
can cause disease
Which of the following pair is correctly matched ?
Fungi Saprophytic parasitic mode of nutrition.
Monera Nuclear membrane is present.
Plantae Cell wall is made up of cellulose.
Animalia Cell wall is absent.
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
Which of the following class of fungi is being described by the given statements ?
(i) They are found in aquatic habitats and on decaying wood in moist and damp places.
(ii) Mycelium is aseptate and coenocytic.
(iii) Asexual reproduction takes place by zoospores (motile) or by aplanospores (non-motile).
(iv) Some common examples are Mucor, Rhizopus and Albugo.
Ascomycetes
Phycomycetes
Basidiomycetes
Deuteromycetes
Which of the following statement(s) is/are correct about ascomycetes ?
(i) Neurospora, which is used in biochemical and genetic work is a member of this class.
(ii) They are mostly multicellular, e.g., Yeast, or rarely unicellular, e.g., Penicillium.
(iii) They are saprophytic, decomposers, parasitic or coprophilous.
(iv) Some examples are Aspergillus, Claviceps and Neurospora.
Both (i) and (ii)
Only (ii)
(i), (iii) and (iv)
All of these
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
The given figure shows the structure of filamentous blue green algae, Nostoc with a structure marked as X. Select the option which shows the correct identification of the X with its feature.
Spores - Reproduction
Heterocysts - Nitrogen fixation
Pellicle - Recycling of nutrition
Mucilaginous sheath - Photosynthesis
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.
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
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
Protozons are not included in kingdom animalia because they are
mostly asymmetrical.
unicellular eukaryotes.
heterotrophic in nature.
multicellular prokaryotes.
Read the following statements and answer the question given below
(i) They are saprophytic protists.
(ii) Under suitable conditions, they form an aggregation (called plasmodium) which may grow and spread over several feet.
(iii) During unfavourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips.
Which of the following class of protists is being described by the above statements ?
Euglenoids
Dinoflagellates
Slime moulds
Protozoans
Which of the following kingdom does not have nuclear membrane ?
Protista
Fungi
Monera
Plantae
Why food can be kept for a longer time in cold house than in normal conditions ? Because,
insect cannot enter.
bacterial multiplication stops.
bacterial multiplication is reduced.
there is plasmolysis at low temperature.
Which one of the following statement is correct for archaea?
Archaea resemble eukaryotes in all respects.
Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
Archaea completely differ from both prokaryotes and eukaryotes.
Archaea completely differ from prokaryotes.
Which group of fungi is commonly known as imperfect fungi ?
Phycomycetes
Ascomycetes
Basidiomycetes
Deuteromycetes
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
Match column I (containing fungus name) with column II (common name) and choose the correct options.
| Column-I | Column-II |
|---|---|
| (Fungus name) | (Commonly called) |
| A. Puccinia | I. Yeast |
| B. Ustilago | II. Mushroom |
| C. Agaricus | III. Smut fungus |
| D. Saccharomyces | IV. Rust fungus |
A I, B II, C III, D IV
A II, B III, C IV, D I
A III, B IV, C I, D II
A IV, B III, C II, D I
Clamp connection is found in
basidiomycetes
ascomycetes
saccharomycetes
haplomycetes