List of top Botany Questions

The early development of monocot and dicot embryo is similar up to which stage?
The characteristic of Cleistogamous flowers is :
Which of the following mutations is most likely to contribute to the development of cancer?
A eukaryotic cell is exposed to a chemical that inhibits the 5' capping of pre-mRNA. What is the most likely effect on translation?
The enzyme responsible for synthesizing RNA primers during DNA replication is -
Sequence the following events involved in a point mutation in DNA.
A. Alteration in the amino acid sequence of a protein.
B. Change in mRNA codon during transcription.
C. Substitution of a single nucleotide in the DNA sequence.
D. Possible disruption of protein function or structure.
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Which of the following is NOT the characteristic feature of xerophytic plants?
To increase the amount of mugineic acid, rice plants were transformed (using Agrobacterium) with a fragment of barley genomic DNA containing two naat genes; naat-A and naat-B, encoding the subunits of the enzyme
In which of the following molecular markers, polymerase chain reaction (PCR) is required?
A. Restriction Fragment Length Polymorphism (RFLP)
B. Random Amplified Polymorphic DNAs (RAPD)
C. Amplified Fragment Length Polymorphism (AFLP)
D. Sequence-Tagged Sites (STSs)
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What is the primary function of Bt toxin in genetically modified crops like Bt Cotton?
A plasmid vector contains a multiple cloning site (MCS) within the lac-Z gene. If foreign DNA is inserted into the MCS, what happens when competent cells are transformed with this plasmid and allowed to grow on a nutrient medium plate with X-gal and IPTG?
Sequentially arrange the steps involved in cryopreservation of plant cells in order of their occurrence.
A. Raising sterile tissue culture
B. Determination of viability
C. Freezing, Storage
D. Addition of cryoprotectants.
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Which of the following is a characteristic feature of Bacterial Artificial Chromosome (BAC) vector?
Which sequence of steps is correct in the development of a genetically modified (GM) crop?
A. Insertion of the gene into the vector.
B. Identification of a desired gene.
C. Selection and screening of transformed plants.
D. Transfer of the vector into a plant cell.
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Identify the plants from the following which do not exhibit Kranz anatomy:
A. Aloe
B. Zea mays
C. Agave
D. Opuntia
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Match the LIST-I with LIST-II
List-I (Family/Characteristic, etc.)List-II (Species/Examples)
(A) Myrtaceae(I) Psidium
(B) Hypanthodium inflorescence(III) Fig
(C) Caryophyllaceae(II) Carnation
(D) Asteraceae(IV) Inula
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The genera which belongs to the family Characeae are:
A. Tolypella
B. Nitella
C. Nigella
D. Chara
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Which nitrogen fixing symbiont is associated with sugarcane as a host plant?
Specialised cells are generally found in the plant leaves which contain outgrowths of epidermal cell wall, made of calcium carbonate or silicon dioxide in a cellulose matrix are called as:
Which of the following is incorrectly matched ?
What is the correct general scheme of the fungal succession on herbivore dung:
A. Basidiomycetes
B. Discomycetes
C. Phycomycetes
D. Pyrenomycetes
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Which of the following is a macrophyte?
Among the following ecosystems, which has the least Net Primary Production (NPP)?
Select the phases which are included in the 'Interphase'.
A. S phase
B. M phase
C. G₁ phase
D. G₂ phase
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During sexual reproduction in Rhizopus, projections from two compatible hyphae are attracted towards each other. These hyphae are called -