The most thoroughly studied of the known bacteria-plant interactions is the
Gall formation on certain angiosperms by Agrobacterium
Nodulation of Sesbania stems by nitrogen-fixing bacteria
Plant growth stimulation by phosphate– solubilising bacteria
Cyanobacterial symbiosis with some aquatic ferns
The Correct Option is A
Solution and Explanation
Top Questions on Molecular Basis of Inheritance
- Explain the Semi-conservative mode of DNA replication with the Meselson and Stahl experiment.
- HBSE Class 12 - 2026
- Biology
- Molecular Basis of Inheritance
Study the diagram given below and answer the questions that follow.
- ICSE Class XII - 2026
- Biology
- Molecular Basis of Inheritance
The diagram below shows DNA banding patterns obtained after DNA samples collected from a crime scene were subjected to gel electrophoresis. Samples from crime scene are denoted by C and three suspects are represented by Sı, S2, S3.
- ICSE Class XII - 2026
- Biology
- Molecular Basis of Inheritance
- The enzyme polynucleotide phosphorylase helps the in-vitro synthesis of RNA. Name the scientist who discovered this enzyme.
- ICSE Class XII - 2026
- Biology
- Molecular Basis of Inheritance
- Choose the components that are required for the proper functioning of DNA polymerase enzyme.
(P) DNA template
(Q) A DNA primer
(R) An RNA primer
(S) Four different dNTPs- ICSE Class XII - 2026
- Biology
- Molecular Basis of Inheritance
Questions Asked in NEET exam
- Given below are two statements:
Statement I: The DNA fragments extracted from gel electrophoresis can be used in the construction of recombinant DNA.
Statement II: Smaller size DNA fragments are observed near the anode while larger fragments are found near the wells in an agarose gel.- NEET (UG) - 2025
- Molecular Biology
Given below are two statements:
Statement I: Transfer RNAs and ribosomal RNA do not interact with mRNA.
Statement II: RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence.
In the light of the above statements, choose the most appropriate answer from the options given below:- NEET (UG) - 2025
- RNA interference
- Given below are two statements: Statement I: In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable.
Statement II: DNA evolved from RNA and is a more stable genetic material. Its double helical strands being complementary, resist changes by evolving repair mechanisms. In the light of the above statements, choose the most appropriate answer from the options given below:- NEET (UG) - 2025
- Structure of DNA and RNA
- A microscope has an objective of focal length \(f_o = 2\) cm and an eyepiece of focal length \(f_e = 4\) cm. The tube length of the microscope is \(L = 40\) cm. If the distance of distinct vision of eye is \(D = 25\) cm, the magnification in the microscope is:
- NEET (UG) - 2025
- Optical Instruments
- Two gases A and B are filled at the same pressure in separate cylinders with movable pistons of radii \(r_A\) and \(r_B\) respectively. On supplying an equal amount of heat to both the cylinders, their pressures remain constant and their pistons are displaced by 16 cm and 9 cm respectively. If the change in their internal energies is the same, then the ratio \(r_A / r_B\) is:
- NEET (UG) - 2025
- Thermodynamics
Concepts Used:
Antimicrobials
Infections and diseases may be caused by different types of organisms like bacteria, fungi, and viruses, etc., in humans and animals. Antimicrobial agent is the drugs that are used to prevent the pathogenicity of microorganisms.
Examples: Antibiotics, antiseptics, and disinfectants.
It is used to prevent infections and diseases caused by pathogens. Different types of antimicrobial drugs are commonly available. These are as follows:
- Antibacterial drug: is a drug that are used to inhibit the pathogenic activity of bacteria. Example: Zithromax.
- Antifungal drug: A drug that is used to prevent the fungal activity in the host is called an antifungal drug. Example: Miconazole
- Antiviral agent: A drug which is used to stop the pathogenic action of a virus is called as antiviral agents. Example: Tamiflu.
- Antiparasitic drug: is a drug that are used to prevent the growth of pathogenic parasites. Example: Anthelmintics
Read More: Antimicrobial Resistance