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Biological Classification

1051 Questions Start Allen Test
All Exams Allen Errorless
Q876 Allen (A) NCERT BASED QUESTIONS MCQ
Fungus prefers to grow in :-
A.
Warm and humid places
B.
Cold and humid places
C.
Warm and cold both
D.
Warm, cold and humid places
Q877 Allen (A) NCERT BASED QUESTIONS MCQ
In fungi when the hyphae are continuous and branched tubes and filled with multinucleated cytoplasm, these are called:-
A.
Unicellular hyphae
B.
Coenocytic hyphae
C.
Multicellular hyphae
D.
Both (1) and (3)
Q878 Allen (A) NCERT BASED QUESTIONS MCQ
In fungi sexual reproduction is by :-
A.
Fragmentation, Ascospores and Basidiospores
B.
Budding, Conidia, and Basidiospores
C.
Oospores, Ascospores and Basidiospores
D.
Fission, Zoospores, Oospores BBC307
Q879 Allen (A) NCERT BASED QUESTIONS MCQ
Mycelium of members of phycomycetes is:-
A.
Septate and coenocytic
B.
Aseptate and coenocytic
C.
Septate and multicellular
D.
Septate and unicellular
Q880 Allen (A) NCERT BASED QUESTIONS MCQ
Choose the incorrect statement about phycomycetes :-
A.
Members are found in aquatic habitats
B.
Spores are endogenously produced in sporangium
C.
Zygospore is formed by reduction division
D.
Its members reproduce sexually may be isogamous, anisogamous or oogamous.
Q881 Allen (A) NCERT BASED QUESTIONS MCQ
Which fungus is used extensively in biochemical and genetic work ?
A.
Agaricus
B.
Aspergillus
C.
Claviceps
D.
Neurospora
Q882 Allen (A) NCERT BASED QUESTIONS MCQ
Choose the incorrect statement about ascomycetes :-
A.
Mycelium is branched and septate
B.
Sexual spores are produced endogenously .
C.
They have sac like structure in which karyogamy takes place.
D.
Reduction division occurs in fruiting bodies and form conidia.
Q883 Allen (A) NCERT BASED QUESTIONS MCQ
Which group of organism is related with basidiomycetes ?
A.
Mushroom, Ustilago, Aspergillus
B.
Puffballs, Agaricus, Aspergillus
C.
Mushroom, Ustilago, Agaricus
D.
Ustilago, Aspergillus, Agaricus
Q884 Allen (A) NCERT BASED QUESTIONS MCQ
Which set of diseases is caused by members of basidiomycetes ?
A.
Rust and smut
B.
Ergot and smut
C.
Ergot and rust
D.
Citrus canker and rust
Q885 Allen (A) NCERT BASED QUESTIONS MCQ
Fungi imperfecti are called :
A.
members of phycomycetes
B.
members of ascomycetes
C.
members of basidiomycetes
D.
members of deuteromycetes
Q886 Allen (A) NCERT BASED QUESTIONS MCQ
Which is not found in members of deuteromycetes ?
A.
Asexual reproduction
B.
Mode of nutrition
C.
Structure of mycelium
D.
Sexual reproduction
Q887 Allen (A) NCERT BASED QUESTIONS MCQ
Which of the following are noncellular organisms that are characterized by having an inert crystalline structure outside the living cell:-
A.
Bacteria
B.
Mycoplasma
C.
Virus
D.
Lichen
Q888 Allen (A) NCERT BASED QUESTIONS MCQ
Select false statement :-
A.
Lichens are symbiotic association between algae & fungi
B.
Viruses are smaller than bacteria
C.
Virus name are obligate parasites
D.
Viruses are facultative parasite
Q889 Allen (A) NCERT BASED QUESTIONS MCQ
Select incorrect statement about viroid :-
A.
Free infectious RNA
B.
It was discovered by T.O. Diener
C.
It causes potato spindle tuber disease
D.
It contains high molecular weight RNA
Q890 Allen (A) NCERT BASED QUESTIONS MCQ
Which is incorrect statement ?
A.
The Mycoplasma are organisms that completely lack a cell wall.
B.
Mycoplasma can survive without oxygen.
C.
Mycoplasma are the smallest living cells.
D.
Mycoplasma can cause disease only in plants.
Q891 Allen (A) NCERT BASED QUESTIONS MCQ
Generally plant viruses are :-
A.
Double stranded DNA viruses
B.
Single stranded RNA viruses
C.
Single stranded DNA viruses
D.
Double stranded RNA viruses
Q892 Allen (B) ANALYTICAL QUESTIONS MCQ
Modern farmer's can increase the yield of Paddy upto 50% by the use of :-
A.
Cyanobacteria
B.
Rhizobium
C.
Cyanobacteria in Azolla pinnata
D.
Farm yard manure
Q893 Allen (B) ANALYTICAL QUESTIONS MCQ
Plant pathogenic bacteria are mostly :-
A.
Gram + Non spore forming
B.
Gram - Negative non spore forming
C.
Gram + spore forming
D.
Gram (-) spore forming
Q894 Allen (B) ANALYTICAL QUESTIONS MCQ
Nitrogen fixing bacteria convert :-
A.
N2 → NH3
B.
NH4+ → Nitrates
C.
NO2 → NO3
D.
NO3 → N2
Q895 Allen (B) ANALYTICAL QUESTIONS MCQ
Main reason of water bloom in rivers, lakes, sea etc. is:-
A.
Brown algae and green algae
B.
Cyanobacteria and dinoflagellates
C.
Eichornia
D.
Fishes
Q896 Allen (B) ANALYTICAL QUESTIONS MCQ
Genetic material of prokaryotic cell:-
A.
Non histonic double stranded DNA
B.
Histonic double stranded DNA
C.
Histone & DNA both are absent
D.
Histone without DNA
Q897 Allen (B) ANALYTICAL QUESTIONS MCQ
Diatomaceous earth is used as heat insulator in boilers and steam pipes because the cell wall of diatom -
A.
Composed of Iron
B.
Composed of Silicon dioxide
C.
Is conductor of heat
D.
Is bad conductor of electricity
Q898 Allen (B) ANALYTICAL QUESTIONS MCQ
Enzymes are not found in-
A.
Fungi
B.
Algae
C.
Virus
D.
Cyanobacteria
Q899 Allen (B) ANALYTICAL QUESTIONS MCQ
Plant Decomposers belong to :-
A.
Monera and fungi
B.
Fungi and plants
C.
Protista and Animalia
D.
Animalia and Monera
Q900 Allen (B) ANALYTICAL QUESTIONS MCQ
Sexual reproduction in fungus occurs in the following sequential event. Arrange them properly. (A) Fusion of two nuclei called karyogamy. (B) Fusion of protoplasm between two motile or non-motile gametes. (C) Meiosis in zygote resulting in haploid spores.
A.
A → B → C
B.
B → A → C
C.
C → B → A
D.
C → A → B