List of top Botany Questions

Assertion (A): In gel electrophoresis, DNA fragments get separated and move toward the anode.
Reason (R): DNA fragments are positively charged molecules.

Thermostable DNA polymerase (Taq Polymerase) enzyme is isolated from the following bacterium:

Match the following:

Identify the correct definitions of the following molecular biology terms:
I. Splicing = Removal of introns
II. Capping = Addition of unusual methyl guanosine triphosphate added to 5" end of hn RNA
III. Tailing = Deletion of adenylate residues at 3'end of hn RNA
IV. Anticodon= Specifies termination of polynucleotide chain

Given is the schematic structure of the transcription unit. Select the correct answer regarding A, B, C, and D:

In Morgan’s experiments on linkage in Drosophila, the percentage of white-eyed, miniature-winged recombinants in the F\(_2\) generation is:

Assertion (A): Beggiatoa is not a chemoautotrophic bacterium.
Reason (R): Chemoautotrophic bacteria derive carbon from CO\(_2\) and energy from oxidation of inorganic compounds.

The table given below is related to the checkerboard of dihybrid F\(_2\) progeny of Mendel’s experiment. Identify the correct combinations:

Substrate-level phosphorylation does not occur in the following reactions of aerobic respiration:

In C\(_4\) plants, the Oxaloacetic acid is formed by this reaction:

Identify the correct combinations:

Match the following:

Identify the correct sentences regarding the role of physiological responses of phytohormones:
I. Ethylene initiates sprouting of potato tubers
II. Gibberellins promote senescence
III. Auxins promote flowering in pineapple
IV, Abscisic acid inhibits seed germination

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The site of transcription and translation in eukaryotic cells are respectively:

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Identify the correct statement with reference to the diagram given below:

Per one Calvin cycle, the number of CO\(_2\) molecules fixed, ATP utilized, and the number of Glucose, NADPH molecules produced respectively are:

Identify the incorrect pair:
(A) Casuarina — Succulent root — Phylloclade
(B) Asparagus — Succulent leaf — Phylloclade
(C) Opuntia — Succulent stem — Phylloclade
(D) Aloe — Succulent leaf — Xerophyte

Assertion (A): Disulphide bridges help in stabilization of protein structure.
Reason (R): Sulphur forms disulphide bridges in the quaternary structure of proteins.

Dehydration occurs during the formation of the following types of bonds:

Match the following:

Match the following:

Cell organelles included in the endomembrane system are: