List of top Botany Questions

The influenza virus carry functional surface projections called spike which contains unique enzyme known as

Match List I with List II

LIST I		LIST II
A	Anthoceros	I	Hornworts
B	Sphagnum	II	Maiden hair ferm
C	Adiantum	III	Royal ferm
D	Osmunda	IV	Peat moss

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Fibers commonly formed in the secondary xylem of tension wood are termed:

Match List I with List II

LIST I		LIST II
A	Lutoids	I	Sieve elements
B	Nacre' wall	II	Idioblast
C	Cystolith	III	Cork cambium
D	Phelloid cell	IV	Laticifers

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Match List I with List II

LIST I		LIST II
A	WUSCHEL gene	I	Stomata
B	TOO MANY MOUTHS gene	II	Vascular bundles
C	GLABROUS gene	III	Shoot Apical Meristem
D	Wilted gene	IV	Trichome

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Gradate sori can be seen in:

Aflatoxins are produced by:

Match List I with List II

LIST I Name		LIST II Organism
A	Black wart disease of potato	I	Synchytrium endobioticum
B	Black Mould	II	Achyla bisexualis
C	Water Mould	III	Aspergillus niger
D	Blue or Green Mold	IV	Penicillium chrysogenum

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Parasexual cycle brings variation in those fungi where sexual reproduction is absent. Arrange the following steps involved in the cycle sequentially:
A. Multiplication of diploid nuclei.
B. Formation of heterokaryotic mycelium and nuclear fusion.
C. Sorting of diploid nuclei and occasional haplodization of diploid nuclei.
D. Occasional mitotic crossing over.
E. Sorting of new haploid strain.
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Among the fossils, well preserved leaf venation pattern can be seen in:

_____has elaterophores present in the apical region of the capsule.

Match List I with List II

LIST I Botanical Name		LIST II English Name
A	Cucumis sativa	I	Pumpkin
B	Cucumis melo	II	Melon
C	Curcurbita pepo	III	Cucumber
D	Citrullus lanatus	IV	Water melon

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Which of the following is true about Gibberellins?
A. Gibberellins are terpenoid compounds, made up of isoprene units.
B. GA12 is the precursor of all the other gibberellins.
C. GA1 and GA3 are directly responsible for the various effects in plants.
D. Size of seedless grapes can be increased by GA applications.
E. Gibberellin biosynthesis can be inhibited by application of Auxins.
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Which of the following is true for Alternative Splicing?
A.It increases the number of proteins that can be made from each gene.
B.It is a step in the process of post-translational regulation.
C.It can change the protein localization in the cell.
D.It defines removal of alternative introns from the mRNA.
E.It allows the humans to produce several hundred thousand different proteins from 25000 genes.
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Eukaryotic ribosomes sediment in sucrose gradient with a sedimentation coefficient of:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: The chromosome is composed of heterochromatic terminal region called telomeres.
Reason R: Telomeres are important part of a chromosome and are required during chromatid separation in cell cycle.
In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Riboswitches are the small mRNA, which alter the expression of a gene.
Reason R: Alternation of expression is due to high specificity of mRNA to broad range of ligands.
In the light of the above statements, choose the most appropriate answer from the options given below:

Match List I with List II

LIST I Structure		LIST II Name of organism
A	Heterocyst	I	Cladophora
B	Cap cells	II	Diatoms
C	Frustule	III	Blue green algae
D	Aegagropilous forms	IV	Oedogonium

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Following are the common characteristic structural motifs of eukaryotic transcription factors, except:

Bacterial species showing several flagella at one pole are called:

Match List I with List II

LIST I		LIST II
A	Red rust disease of tea leaves	I	Vaucheria
B	Chlorellin	II	Cephaleuros
C	Gongrosira stage	III	Chlorella
D	Sea palm	IV	Portelsia

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Reticulate type of chloroplast is a characteristic of which algae?

Which algae shows fungus like branched, coenocytic and siphonaceous thallus.