WorksheetsCHAPTER 1 LIVING WORLD 21.1.22 BOTANY
Total questions: 25
Worksheet time: 13mins
Actinomycetes are also called ______
a) Ray Fungi
b) Liverworts
c) Hyphae
d) Pileus
Bacteria were first discovered by ______ .
a) Ehrenberg
b) Leeuwenhoek
c) Koch
d) Bergy
Cyanophages means
a) Viruses infecting red algae
b) Viruses infecting brown algae
c) Viruses infecting blue green algae
d) Viruses infecting green algae
Eschrichia coli and Salmonella are the examples of :
a) Aerobes
b) Obligate aerobes
c) Facultative anaerobes
d) Anaerobes
If a mycelium contains multinucleate and aseptate hyphae, it is described as ______ .
a) Coenocytic
b) Septate
c) Aseptate
d) Multinucleate
In Fungi reproduction sexual phase is called :
a) Anamorph
b) Holomorph
c) Allelomorph
d) Teleomorph
Nitrogen fixation in non leguminous plants is done by______.
a) Rhizobium
b) Alnus
c) Frankia
d) Streptomyces
Nostoc and Anabaena are the examples of :
a) Biofertilizer
b) Biological fuel
c) Biotic factor
d) Pro - Biotic
Sac fungi refers to______.
a) Ascomycetes
b) Zygomycetes
c) Basidiomycetes
d) Deuteromycetes
The organisms isolated from pleural fluid of cattle ______.
a) Actinomycetes
b) Virus
c) Phage
d) Mycoplasma
The symbiotic association between fungal mycellium and roots of higher plants is called :
a) Lichen
b) Symbiotic
c) Monotropa
d) Mycorrhizac
Yellow powder which saved lives of soldiers in world war II was______.
a) Streptomycin
b) Aureomycin
c) Penicillin
d) Bacitracin
Mad cow disease is caused by ______.
a) Prions
b) Virion
c) Viroid
d) Phage
Transfer of DNA from one bacterium to another is called :
a) Conjugation
b) Transfoiination
c) Transduction
d) Binary fission
Which one of the following organisms completely lacks a cell wall?
a) Eubacteria
b) Archaebacteria
c) Fungi
d) Mycoplasma
______are considered as pollution indicators. a) Mycorrhiza b) Actinomycete c) Lichens d) Cyanobacteria
a) Mycorrhiza
b) Actinomycete
c) Lichens
d) Cyanobacteria
______is found in corolloid roots of Cycas.
a) Dermacarpa
b) Nostoc
c) Scytonema
d) Chara
Identify the Archaebacterium
a) Acetobacter
b) Erwinia
c) Treponema
d) Methanobacterium
Identify the correctly matched pair
a) Actinomycete - (a) Late blight
b) Mycoplasma - (b) Lumpy jaw
c) Bacteria - (c) Crown gall
d) Fungi - (d) Sandal spike
The correct statement regarding Blue green algae is
a) lack of motile structures
b) presence of cellulose in cell wall
c) absence of mucilage around the thallus
d) presence of floridean starch
Assertion: The penetration process involves mechanical and enzymatic digestion of the cell wall of the host. Reason: At the recognition site phage digests certain cell wall structure by viral enzyme (lysozyme).
a) Both assertion and reason are true and the reason is the correct explanation of the assertion
b) Both assertion and reason are true but the reason is not the correct explanation of the assertion
c) Assertion is true but reason is false
d) Both assertion and reason are false statements
7. Assertion: Viruses infecting bacteria are called Bacteriophages. Reason: It literally means ‘eaters of bacteria’
a) Both assertion and reason are true and the reason is the correct explanation of the assertion
b) Both assertion and reason are true but the reason is not the correct explanation of the assertion
c) Assertion is true but reason is false
d) Both assertion and reason are false statements
Assertion: Each virus possesses only one type of nucleic acid either DNA or RNA. Reason: The nucleic acid may be in a linear or circular form.
a) Both assertion and reason are true and the reason is the correct explanation of the assertion
b) Both assertion and reason are true but the reason is not the correct explanation of the assertion
c) Assertion is true but reason is false
d) Both assertion and reason are false statements
Assertion: The lipopolysaccharides of tail fibres act as receptor in phages. Reason: The process involving the recognition of phage to bacterium is called landing.
a) Both assertion and reason are true and the reason is the correct explanation of the assertion
b) Both assertion and reason are true but the reason is not the correct explanation of the assertion
c) Assertion is true but reason is false
d) Both assertion and reason are false statements
Identify the sequence involved in lytic life cycle. (A) Pinning (B) Maturation (C) Synthesis (D) Ghost
a) A B C D
b) A D C B
c) D A C B
d) A C D B
