Related Questions
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4
Which of the following is a parasitic fungi on the mustard plant ?
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4
Consider the following statements with respect to characteristic features of the kingdom.
(i) In animalia, the mode of nutrition is autotrophic.
(ii) In monera, the nuclear membrane is present.
(iii) In protista, the cell type is prokaryotic.
(iv) In plantae, the cell wall is present.
Of the above statements, which one is correct ?
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4
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 ?
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4
Bacteria are found to be primitive organisms because they
A. are small, microscopic which are not seen with naked eye.
B. cause serious diseases to human being, domesticated animals and crop plants.
C. produce endospores which are very resistant to adverse conditions.
D. possess incipient nucleus and show amitotic division.
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4
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?
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4
Bacteria were regarded to be plants because
A. some of them are green in colour.
B. they are present every where.
C. some of them cannot move.
D. they have a rigid cell wall.
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4
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.
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4
Which of the following statement is incorrect ?
A. TMV has a double-stranded RNA molecule.
B. Most plant viruses are RNA viruses.
C. The bacteriophage has a double-stranded DNA molecule.
D. Most animal viruses are DNA viruses.
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4
Which of the following is used extensively in biochemical and genetic work ?
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4
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.
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4
The symbiotic association of fungi and algae is called
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4
The bacteria which oxidize various inorganic substances and use the released energy for their ATP production are called _______________.
B. Heterotrophic bacteria
C. Photosynthetic autotrophic bacteria
D. Chemosynthetic autotrophic bacteria
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4
How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosomes, Porphyra, Wolffia
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4
Dikaryon formation is the characteristic feature of
A. ascomycetes and basidiomycetes.
B. phycomycetes and basidiomycetes.
C. ascomycetes and phycomycetes.
D. phycomycetes and zygomycetes.
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4
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. A II, B III, C IV, D V, E I
B. A I, B II, C III, D V, E IV
C. A II, B V, C III, D I, E IV
D. A II, B III, C IV, D I, E V
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4
Which of the following characteristic(s) is used by Whittaker for the classification of organisms ?
C. Phylogenetic relationships
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4
Which scientist classify plants into trees, shrubs and herbs & animals into two groups having red blood cells and without red blood cells?
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4
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.
C. (i), (ii), (iv), and (v)
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4
How many bacteria are produced in four hours if a bacterium divides once in half an hour ?
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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.
B. Heterocysts - Nitrogen fixation
C. Pellicle - Recycling of nutrition
D. Mucilaginous sheath - Photosynthesis
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4
A virus can be considered a living organism because it
A. responds to touch stimulus
C. reproduces (inside the host)
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4
Bacteria lack alternation of generation because there is
A. neither syngamy nor reduction division.
B. no distinct chromosomes.
D. no exchange of genetic material.
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4
Which of the following pairs comes under the group chrysophytes ?
B. Euglena and Trypanosoma
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4
Which of the following is the correct sequence of three steps in the sexual cycle of fungi?
A. Mitosis -> Meiosis -> Fertilization
B. Plasmogamy -> Karyogamy -> Meiosis
C. Mitosis -> Plasmogamy -> Karyogamy
D. Karyogamy -> Plasmogamy -> Meiosis
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4
Identify the basis of classification of fungi into phycomycetes, ascomycetes, basidiomycetes and deuteromycetes.
i. Fruiting bodies
ii. Nature of habitat
iii. Morphology of mycelium
iv. Mode of spore formation
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4
Which of the following pair is not correctly matched ?
A. Anabaena Cyanobacteria
C. Gonyaulax Dinoflagellates
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4
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. A-(v) B-(ii) C-(iv) D-(iii) E-(i)
B. A-(iii) B-(i) C-(iv) D-(ii) E-(v)
C. A-(ii) B-(i) C-(iii) D-(v) E-(iv)
D. A-(iii) B-(ii) C-(iv) D-(i) E-(v)
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4
Lichens indicate SO2 pollution because they
A. show association between algae and fungi.
B. grow faster than others.
D. flourish in SO2 rich environment.
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4
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. A III; B II; C I; D IV
B. A II; B III; C I; D IV
C. A II; B III; C IV; D I
D. A II; B IV; C III; D I
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4
Which of the following kingdom does not have nuclear membrane ?