Posted inZoology

Structure and Function of Gastrointestinal Tract

STRUCTURAL ORGANISATION, HISTOLOGY AND FUNCTIONS OF GIT Gastrointestinal tract Identifiers ( Latin- Tractus digestorius (mouth to anus), canalis alimentarius (esophagus to large intestine), canalis gastrointestinales (stomach to large intestine).                                 …
Posted inBiomolecules

Lipids

These are group of substances with greasy consistency. They are with long hydrocarbon chain containing carbon, hydrogen and oxygen. In lipids, hydrogen to oxygen ratio is greater than 2:1. Lipid…
Posted inEcology

ORGANISMS AND POPULATIONS

POPULATION: Population attributes: Population: a group of individual living in a well defined geographical area, share or compete for similar resources, potentially interbreed. Birth rate and death rate refers to per…
Posted inBiodiversity

Differences between Pteridophytes and Gymnosperm

S.No.CharacterPteridophytesGymnosperms1HabitatHygrophytes (i.e. grow in moist and shaddy places).Xerophytes (Grow where the water supply is scanty.)2RootAdventitious rootsTap Root3Vascular cambiumAbsentPresent4ArchegoniumNeck canal cell , venter canal cell PresentAbsent5WaterEssential for FertilizationNot necessary6Microspores and MegasporesDevelops…
Posted inCell Biology

Eukaryotic Nucleus

Structure Two nuclear membranes, inner and outer nuclear membranes. Nuclear pore complexes, which allow the regulated exchange of molecules between the nucleus and the cytoplasm. Space between the inner and…