List of top Botany Questions

Choose the correct statements among the following
I. Streptokinase is produced by Streptococcus.
II. Saccharomyces cerevisiae is used for commercial production of Ethanol.
III. Cyclosporin-A — blood cholesterol lowering agent produced by Trichoderma polysporum.
IV. Statin produced by yeast.

Assertion (A): Propionibacterium sharmanii is responsible for large holes in Swiss cheese.
Reason (R): Characteristic texture, flavour and taste of cheese is specific to microorganism.
Identify the correct option from the following:

The following hybridization crop variety is not an insect pest resistance variety

Match the following

List - I	List - II
A. Ori	IV. Controlling the copy number of linked DNA
B. Selectable marker	III. Permitting the growth of transformants
C. Cloning site	II. Single recognition site to link alien DNA
D. Cloning vector	I. Low molecular weight

Assertion (A): In prokaryotes the DNA in the nucleoid is organized in large loops held by proteins.
Reason (R): In prokaryotes, negatively charged DNA molecules are held with positively charged proteins.
Identify the correct option from the following:

Protein toxin produced by Bacillus thuringiensis that kill corn borer

Choose the correct statements among the following
I. Pure DNA can be isolated by using ribonuclease and proteases.
II. Ethidium bromide staining facilitates the visualisation of DNA fragment in Agarose gel.
III. Sticky and ligation techniques help to cut the gene of interest from the source DNA.

Choose the correct statement among the following
I. Validity of GM research and safety of introducing GMO has to be given by GEAC.
II. Molecular farming means utilization of plants as biofactories for obtaining commercially useful products.
III. Basmati Rice variety is a transgenic plant with improved nutritional value.
IV. “Flavr savr” is suitable for food storage technology.

Choose the incorrect statements among the following
1. Purines and cytosine are common in DNA and RNA.
2. Thymine is present only in RNA.

3. Uracil is present in DNA at the place of Thymine.
4. Adenine and Guanine are Purines

Number of nucleotides in viroid

Arrange the intermediate compounds of Kreb's cycle based on number of carbons in ascending order.

Choose the correct series of bacteria that cause Tetanus, Diphtheria, Crown gall and Blight, respectively

The phenomenon of a single gene product may produce more than one effect so that a single gene may be related to more than one character.

Match the following

List - I	List - II
A) Kinetin	IV) Adenine derivatives
B) ABA (Abscisic Acid)	I) Terpenes
C) GA3 (Gibberellic Acid)	I) Terpenes
D) IAA (Indole Acetic Acid)	III) Indole compound

Choose the correct statement from the following
(I) In Hatch-Slack pathway mesophyll cells lack RuBisCO enzyme
(II) PEP carboxylase is present in bundle sheath of chloroplast
(III) OAA is formed in mesophyll cells
(IV) PEP is primary CO2 acceptor present in chloroplast of bundle sheath cells

Mutation is a phenomenon of
1. Alteration of genes
2. Variation in DNA
3. Heritable change in genotype and phenotype of an organism

Choose incorrect statement from the following

Bacteria that oxidise Ammonia to Nitrite

Choose the correct statements among the following:
I) CO\textsubscript{2} fixed by the forest will have direct economical value.
II) By reducing the use of pesticides we can protect the pollinators.
III) Ecosystem services are delivered by non-living organisms of ecosystem.
IV) Pollinators play a significant role in the enhancement of food production.
Identify the correct option from the following:

Assertion (A): Decrease in the proton number in stroma and accumulation of more protons in the lumen creates proton gradient across the membrane.
Reason (R): Energy is released by the breakdown of proton gradient by ATPase and helps in synthesis of ATP.
Identify the correct option from the following:

Match the following:

List - I	List - II
A. Nucleic acids structure	IV. Phosphorous
B. Synthesis of nucleic acid	III. Iron
C. Stabilize protein structure	II. Sulphur
D. Catalase	II. Sulphur

Attraction of water molecules to polar surfaces in tracheary elements:

Choose the correct combination regarding mechanism of translocation:

Choose the correct statements among the following:
1. Duplication of genome, synthesis of other cell constituents, and division to produce new cells is called cell cycle.
2. Interphase is followed by a resting phase.
3. In every cell division, genetic variability will increase from generation to generation.
4. Plant cells can divide mitotically in both haploid and diploid cells.
Identify the correct option from the following:

Choose the correct statements among the following:
1. Plant ash includes all carbon and inorganic elements.
2. In amino acid, an amino group and acidic group on α-carbon makes it α-amino acid.
3. Glycerol has 3 -OH groups.
4. Acid insoluble fractions are called macromolecules.
Identify the correct option from the following:

Prev
1
2
3
...
39
Next