29 public questions tagged with this topic.
Bacteria play a key role in the nitrogen cycle by converting atmospheric nitrogen into forms usable by plants.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Tissue culture is a technique that produces genetically identical plants through micropropagation from a_x000D_ single plant cell or tissue.
Ref: NCERT Class 12 Biology Chapter 10: Biotechnology and its Applications Medical Applications - Genetically Engineered Insulin
RNA interference (RNAi) silences specific gene expression using double-stranded RNA molecules.
Ref: NCERT Class 12 Biology Chapter 10: Biotechnology and its Applications Agricultural Applications - RNAi - Nematode Resistance
Homo habilis, also known as the 'handy man,' was the first hominid to use stone tools.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Darwinism Lamarckism and Modern Synthetic Theory
Darwin's finches are a classic example of adaptive radiation, where species evolved from a common ancestor to occupy different ecological niches.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin and Evolution of Man
Homo erectus used tools and fire, marking an important stage in human evolutionary development.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin and Evolution of Man
Embryological evidence, such as similar embryonic stages, supports the concept of common ancestry among species.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Evidences of Evolution - Paleontological and Comparative Anatomy
Hardy-Weinberg equilibrium remains stable only when no evolutionary forces are acting on a population.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Evidences of Evolution - Paleontological and Comparative Anatomy
Chemical evolution suggests that life originated from simple inorganic substances through gradual chemical processes.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin of Life - Theories Miller Urey Experiment
Louis Pasteur's experiment showed that life arises from pre-existing life, disproving the theory of spontaneous generation.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin of Life - Theories Miller Urey Experiment
Panspermia suggests that life came from outer space, carried by spores or microorganisms.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin of Life - Theories Miller Urey Experiment
Histones help package DNA into chromatin, making it more compact within the nucleus.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
