The growth curve of bacterial population in lab is plotted against time. What will be the shape of graph?

(1) Sigmoid

(2) Hyperbolic

(3) Ascending straight line

(4) Descending straight line

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The outermost limiting layer of mycoplasma is made up of

(1) cell wall

(2) cell membrane

(3) mucilaginous sheath

(4) slime layer

Concept Questions :-

Kingdom Monera:Actinomycetes, Mycoplasma
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By all of the following ways bacteria become resistant to antibiotic except

(1) making enzymes that inactivate the drug

(2) becoming impermeable to the drug

(3) modifying the target of the drug

(4) moving away from the drug.

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Protista differs from monera in having

(1) cell wall

(2) autotrophic nutrition

(3) flagella

(4) nuclear membrane

Concept Questions :-

Kingdom Protista: Introduction
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Which of the following is correct?

(1) All fungi are filamentous.

(2) Transfer of DNA from one bacteria to another bacteria cannot take place.

(3) Virus cannot have both DNA and RNA.

(4) Protists reproduce asexually only.

Concept Questions :-

Virus, Viroids & Prions
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Kingdom Animalia is characterised by

(1) direct dependence on autotrophs

(2) indirect dependence on autotrophs

(3) absence of chlorophyll

(4) absence of cell wall

Concept Questions :-

Different Classification System
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Deuteromycetes are known as fungi imperfecti because

(1) their zygote undergoes meroblastic and holoblastic cleavage

(2) only asexual stages are known

(3) they have aseptate mycelium

(4) they are autotrophic

Concept Questions :-

Kingdom Fungi: Deuteromycetes
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The genetic material in tobacco mosaic virus is

(1) ss DNA

(2) ss RNA

(3) ds RNA

(4) ds DNA

Concept Questions :-

Virus, Viroids & Prions
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Yeast is not included in protozoans but in fungi because

(1) it has chlorophyll

(2) it shows saprotrophic mode of nutrition

(3) it has eukaryotic organisation

(4) cell wall is made up of cellulose and reserve food material as starch.

Concept Questions :-

Kingdom Fungi: Ascomycetes
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Identify the labelled part in the given figure and select the correct option.

 

A

B

(1)

Heterocyst

Mucilaginous sheath

(2)

Mucilaginous sheath  

Heterocyst

(3)

Heterocyst

Capsid

(4)  

Pseudopodia

Mucilaginous sheath

Concept Questions :-

Kingdom Monera: Blue Green Algae
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