Transpiration: Definition and significance | factors affecting transpiration
Transpiration The process of movement of water molecules through plant and its evaporation (or loss) from aerial parts of the plant (such as leaves) is […]
Articles by Projjol
Energy flow in an ecosystem | Ecological pyramid
Ecosystem: An ecosystem is a group of many communities and different abiotic factors which influence that community. At this level of ecology, ecologists usually focus on flow […]
Ecology: Importance and Examples | Biotic and Abiotic factors | Levels of ecology
Ecology Ecology is the branch of science which deals with the study of the relationship or interaction between different living organisms and their environment. Here […]
Operon model | Lac Operon (Lactose Operon) | Trp Operon (Tryptophan Operon)
Operon system An operon system is a genetic regulatory system found in bacteria which regulates and expresses the bacterial gene. It allows proteins synthesis to be controlled […]
General characteristics and classification of phylum platyhelminthes (or flatworm) with examples
General characteristics of phylum platyhelminthes (or flatworm) are discussed below: 1) Platyhelminthes are commonly called as flatworm. 2) Their body is bilaterally symmetrical and dorso-ventrally […]
Characteristics, functions and types of RNA (ribonucleic acid)
Characteristics of RNA > Like DNA (or deoxyribonucleic acid), RNA (or ribonucleic acid) is also a type of nucleic acid. > RNA is also made up of polynucleotide chain (i.e., […]
Why DNA is considered as genetic material? | Criteria of genetic material | Class 12 biology ch 6
RNA (or ribonucleic acid) RNA (or ribonucleic acid) is a single stranded structure which consists of uracil as a nitrogenous base instead of thymine and […]
General characteristics and types of DNA | Chargaff’s rule | Central dogma theory
General characteristics of DNA: 1. DNA (or Deoxyribonucleic Acid) is a long polymer of deoxyribonucleotides. 2. The number of nucleotides present in a DNA determines the length […]
Class 12 biology chapter 6 | DNA double helix structure | Polynucleotide chain
Double Helix Structure of DNA (Watson and Crick model of DNA) The salient features of the Double-helical DNA structure proposed by James Watson and Francis […]
Different types of fish scales: Placoid scale, Ctenoid scale, Cycloid scale, Ganoid scale, Cosmoid scale
Scales of fish Scales are the prominent structure present on the outer surface of a fish body. It helps fishes in providing insulation and also […]