12 public questions tagged with this topic.
Net Primary Productivity (NPP) is the energy available to consumers after subtracting respiration losses from Gross Primary Productivity (GPP).
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Productivity - Primary Secondary GPP NPP
Gross Primary Productivity (GPP) is the total biomass produced by plants before respiration losses are deducted.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Productivity - Primary Secondary GPP NPP
A population consists of individuals of the same species inhabiting a particular area, sharing resources, and interbreeding.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Mutualism and Amensalism
Semelparity is a reproductive strategy where organisms reproduce once before dying, as seen in certain insects and salmon.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Biotic potential is the highest possible reproductive capacity of a species when environmental conditions are optimal.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
A family consists of related genera. Members grouped at the family level share fewer similarities than members grouped within the same genus or species.
Ref: NCERT Class 11 Biology Chapter 1: The Living World Taxonomic Categories - Species and Genus
Parental care investment reflects key principle in quiz on animal behavior+pyqs, where evolutionary mechanisms shape genetic variation and adaptation. In this context, Parental care investment aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why Parental care investment fits helps integrate natural selection, environment.
Ref: Alcock, Animal Behavior, Kin Selection and Social Behavior.
After organic monomers accumulated, their organization into self-maintaining systems marks transition to life. Biogeny describes evolution of protobionts, protocells and true prokaryotic cells capable of metabolism, growth and imperfect replication subject to selection. It follows chemogeny and encompasses origin of genetic material, membranes and autotrophy. Unlike purely chemical steps, biogeny involves biological properties like heredity. Hence Biological evolution captures this later phase where molecular evolution becomes Darwinian. This concept integrates genetics, ecology and molecular
Ref: Alberts et al., Molecular Biology of the Cell, 6th ed., Chapter 1: Origin of Life.
“Reduction of realized niche” for ecological niche compression refers to. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Habitat describes where an organism occurs; niche additionally describes how it obtains resources and affects or responds to other organisms. Distribution therefore provides evidence about a niche but is not identical to it. The remaining alternatives—“Expansion of realized niche”, “Expansion of fundamental niche”, “Reduction of fundamental niche”—refer to different states, pro
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13
Autogenic change is environmental modification caused by organisms within the community, and it can drive succession. Plants create shade, roots alter soil structure, litter adds organic matter, nitrogen-fixing microbes enrich nutrient supply, and sphagnum can acidify wetland water. These changes modify the establishment and competitive success of later species. Allogenic change originates outside the community, such as volcanic deposition, flooding, erosion, climate shifts, or altered fire regimes. “Catagenic” and “progenetic” are not the standard contrasting terms for organism-driven success
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 20
Equal solute concentration as cells is the scientifically accurate answer to this question. Within the study of Water and Mole Concept, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of Equal solute concentration as cells directly address what is being asked. Among the other options, Higher solute concentration than cells, Lower solute concentration than cells, and No solute present do not correctly answer this question because they either refer to different concepts, descr
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2
Glycoproteins, glycolipids, and proteoglycans accurately defines or describes the concept asked in this question. Within Carbohydrates, precise definitions and terminology are essential for clear scientific communication. The other options (Polysaccharides only, Only glycoproteins, and Sugars linked via hydrogen bonds) either describe related but distinct concepts, use incorrect terminology, or confuse similar-sounding terms that have different scientific meanings. A thorough understanding of exact definitions helps distinguish between closely related biological concepts and is crucial for com
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7
