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The five kingdom classification was proposed by
(a)
In Linnaeus’ time, the number of Kingdoms of living organisms was:
(a)
In the Two Kingdom classification, the Kingdom Plantae was erroneous with some major issues that include:
I. Placing bacteria and blue green algae with eukaryotic groups
II. Grouping together the unicellular organisms with multicellular ones
III. Placing heterotrophic fungi with autotrophic plants
(d)
Who, amongst the following, was the earliest to attempt a more scientific basis of classification?
(a)
Kingdom Monera in Whittaker’s Five Kingdom classification is not characterized by:
(b)
Phylogenetic classification is based on:
(d)
In Whittaker’s Five Kingdom classification, heterotrophic mode of nutrition is present in members of:
(c)
Which of the following organisms, earlier placed in Animal Kingdom, is placed under Kingdom Protista in Whittaker’s classification?
(a)
The main criteria for classification used by Whittaker included all the following, except:
(d)
Match the bacteria in Column I with its shape in Column II and select the correct option from the codes given below:
\(
\begin{array}{|c|l|c|l|}
\hline
& \textbf{COLUMN I} & & \textbf{COLUMN II} \\
\hline
\textbf{A} & \textit{Bacillus} & a & Rod \\
\hline
\textbf{B} & \textit{Coccus} & b & Spherical \\
\hline
\textbf{C} & \textit{Spirilla} & c & Spiral \\
\hline
\textbf{D} & \textit{Vibrio} & d & Comma \\
\hline
\end{array}
\)
Codes:
\(
\begin{array}{|l|l|l|l|l|}
\hline & \text { A } & \text { B } & \text { C } & \text { D } \\
\hline 1 . & \text { a } & \text { b } & \text { c } & \text { d } \\
\hline 2 . & \text { b } & \text { a } & \text { c } & \text { d } \\
\hline 3 . & \text { a } & \text { d } & \text { c } & \text { b } \\
\hline 4 . & \text { b } & \text { a } & \text { d } & \text { c } \\
\hline
\end{array}
\)
(a)
As a group the most extensive metabolic diversity is shown by:
(a)
The vast majority of bacteria are:
(a)
Methanogens are commonly present in:
(c)
Halophiles are archaebacteria adapted to extreme:
(b)
Both Archaebacteria and Eubacteria:
I. have a similar structure of cell wall.
II. are members of Kingdom Monera.
(b)
Archaebacteria and Eubacteria were previously classified together in the Kingdom Monera. However, while they both share some characteristics like being prokaryotic (lacking a nucleus), their cell wall structures differ significantly. Archaebacteria have unique cell walls lacking peptidoglycan, which is a key component of Eubacteria cell walls. Therefore, statement II is correct (they are both members of Monera), but statement I is incorrect (they do not have similar cell wall structures)
Cyanobacteria:
I. are eubacteria.
II. have chlorophyll a similar to green plants.
III. can fix atmospheric nitrogen.
(d)
Cyanobacteria:
I. are also referred to as ‘blue green algae’.
II. are photosynthetic autotrophs with chlorophyll a similar to green plants.
III. often form blooms in polluted water bodies.
IV. some of them can fix atmospheric nitrogen in specialised cells called hetrocysts.
In light of the above given statements:
(c)
Chemosynthestic autotrophic bacteria:
I. Produce ATP by oxidizing inorganic substances.
II. Play a great role in recycling nutrients like nitrogen, phosphorus, iron and sulfur.
(a)
Identify the incorrect statement regarding true bacteria?
(d)
Consider the given two statements:
I. Mycoplasma are naturally resistant to antibiotics that target cell wall synthesis
II. They are the smallest bacteria discovered yet
(b)
In NCERT textbook which of the following are not included in Kingdom Protista?
(d)
Chrysophytes:
I. include diatoms and desmids
II. are found only in marine water
III. are planktonic
(b)
Statement II
False. Chrysophytes are not exclusive to marine environments. They are predominantly freshwater organisms, though a few species inhabit brackish or marine habitats
Identify the names of the different bacteria according to the shapes:-
(a)
Which of the following is not a characteristic of dinoflagellates?
(a)
Identify the incorrect statement regarding Euglenoids:
(d) Pigments are entirely same from those found in higher plants
Identify the blanks in the following figures:-
(b)
Consider the given statements regarding slime moulds:
Statement I: Under unfavourable conditions they form a plasmodium.
Statement II: During favourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips.
Statement III: The spores bear true walls.
Statement IV: The spores are dispersed by water.
(b)
I:-Under suitable conditions, they form an
aggregation called plasmodium which may grow and
spread over several feet
II:-During unfavourable conditions,
the plasmodium differentiates and forms fruiting bodies
bearing spores at their tips
IV:-The spores are dispersed
by air currents.
The major criteria used for classification of Protozoans is:
(b)
Given below is the diagram of a bacteriophage. In which one of the options all the four parts A, B, C and D are correct ?
\(
\begin{array}{l@{\quad}c c c c}
& \textbf{A} & \textbf{B} & \textbf{C} & \textbf{D} \\[0.6em]
\text{(1)} & \text{Tail fibres} & \text{Head} & \text{Sheath} & \text{Collar} \\
\text{(2)} & \text{Sheath} & \text{Collar} & \text{Head} & \text{Tail fibres} \\
\text{(3)} & \text{Head} & \text{Sheath} & \text{Collar} & \text{Tail fibres} \\
\text{(4)} & \text{Collar} & \text{Tail fibres} & \text{Head} & \text{Sheath}
\end{array}
\)
(c)
Match each item in Column I with one in Column II and choose the correct answer from the codes given:
\(
\begin{array}{|l|l|l|l|}
\hline & \text { COLUMN I } & & \text { COLUMN II } \\
\hline \text { A } & \text { Entamoeba } & \text { a } & \text { Flagellated protozoan } \\
\hline \text { B } & \text { Trypanosoma } & \text { b } & \text { Amoeboid protozoan } \\
\hline \text { C } & \text { Paramecium } & \text { c } & \text { Non motile protozoan } \\
\hline \text { D } & \text { Plasmodium } & \text { d } & \text { Ciliated protozoan } \\
\hline
\end{array}
\)
Codes:
\(
\begin{array}{|l|l|l|l|l|}
\hline & \text { A } & \text { B } & \text { C } & \text { D } \\
\hline 1 . & \text { a } & \text { b } & \text { c } & \text { d } \\
\hline 2 . & \text { b } & \text { a } & \text { c } & \text { d } \\
\hline 3 . & \text { a } & \text { b } & \text { d } & \text { c } \\
\hline 4 . & \text { b } & \text { a } & \text { d } & \text { c } \\
\hline
\end{array}
\)
(d)
Identify the incorrect statement regarding body organization in fungi:
(d)
Fungi cell wall having chitin and polysachharide.
Given below is the diagram of a virus. In which one of the options A, B and C are correct
\(
\begin{array}{l@{\quad}c c c}
& \textbf{A} & \textbf{B} & \textbf{C} \\[0.6em]
\text{(a)} & \text{RNA} & \text{Capsid} & \text{Tobacco Mosaic Virus} \\
\text{(b)} & \text{DNA} & \text{Capsil} & \text{Tobacco Mosaic Virus} \\
\text{(c)} & \text{RNA} & \text{Lipid} & \text{Tobacco Mosaic Virus} \\
\text{(d)} & \text{RNA} & \text{Protein}& \text{HIV}
\end{array}
\)
(a)
Protists that do not include any photosynthetic members are:
I. Euglenoids
II. Slime moulds
III. Protozoans
(c)
Observe the following figures and identify them:-
(a)
With respect to fungal sexual cycle, choose the correct sequence of events:
(c)
A ‘dikaryon’ stage is seen in the members of:
(b)
Identify A, B and C in given diagram.
(b)
The basis of classification for the division of Kingdom Fungi into various classes includes all following except:
(c)
Members of phycomycetes are found
i. In aquatic habitats
ii. On decaying wood
iii. In moist and damp places
iv. As obligate parasites on plant
Choose from the following options:
(d)
Which of the following is not true for fungi belonging to the class Phycomycetes?
(c)
In Phycomycetes:
Zoospores are motile (they swim with flagella).
Aplanospores are non-motile.
Both types are produced endogenously in a sporangium.
Therefore, option 3 reverses the characteristics and is incorrect.
Morels and truffles are edible fungi belonging to the class:
(b)
A fungus used extensively in biochemical and genetic work is:
(a)
Which of the following is not a character of Ascomycetes?
(a)
“Mycelium is unbranched and septate”
➤ False — Ascomycetes have hyphae that are both septate and branched, not unbranched
Which statement is wrong for viruses
(b)
All of them have helical symmetry
❌ False — Viruses exhibit a range of capsid structures: helical, icosahedral, and complex (including envelopes or combined shapes). Not all viruses are helical
Identify the incorrect statement regarding viroids:
(d)
No Open Reading Frames (ORFs):
The circular RNA of viroids lacks start codons and necessary coding sequences; hence, they cannot encode proteins .
Rely on Host Enzymes:
Viroids replicate via rolling‑circle synthesis using the host’s RNA polymerase II, entirely devoid of any protein-coding capacity Absence of Protein Synthesis Machinery:
Viroids lack ribosomes, capsid proteins, and everything else needed for translating RNA into proteins
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