Root modification examples and functions

Root The root is the underground part of a plant. Root develops from the radicle of the germinated seed. Important functions of the roots : Absorption of water and minerals. In anchoring the plant in the soil Important Characteristic of roots : The roots in the plants lack node. They are positively geotropic, negatively phototropic … Read moreRoot modification examples and functions

Ecology – Organisms and Populations

Ecology Notes - Organism and population

ECOLOGY The term ecology was given by Ernst Haeckel in the year 1989. Ecology is the branch of biology that deals with inter-relationship amongst organism and their environment. it is connected with the study of environmental factors, plant adaptations, and effect of plants on the environment. Important Branches of ecology Autecology It is the study … Read moreEcology – Organisms and Populations

Excretory Products And Their Elimination

Excretory Products And Their Elimination

Excretory Products And Their Elimination – Animals produce different types of nitrogenous wastes as a result of various cellular reactions taking place in their body. These waste material, if allowed to accumulate in the body, may become toxic. Therefore, they must be removed outside from the body. The proximal convoluted tubule is involved in active … Read moreExcretory Products And Their Elimination

Neural Control and Coordination

free online ncert biology test-21

Neural control and coordination – Multicellular animals have structurally complex body organization. Due to this, there arises a need to have a system for coordinating various metabolic and homeostatic activities of different parts, organs, organ systems in the body. This is achieved by nervous and endocrine systems present in the body. Both these systems jointly coordinate … Read moreNeural Control and Coordination