non-jointed legs animals

Features of Arthropoda..

Butterfly This is the largest phylum with almost 80% of the animals kingdom in this phyla. Body is bilaterally symmetrical and segmented. It is divided into head, thorax and abdomen. Possess jointed legs which may be modified for walking, swimming feeding and..

Body is bilaterally symmetrical and segmented. It is divided into head, thorax and abdome..

Ventricular systole is followed by ventricular diastole. The auricles are already in diastole, so all the chambers of the heart are in diastole. When the ventricles are in diastole, the pressure in the ventricles decreases more than that in the great arteries. So to prevent the backward flow of blo..

where the pollutant entering the water course affects the quality of water at a far off place, where no pollutant would have been added. For e.g., DDT found in sea water The pollutants in river water can be due to agricultural activities in catchment area due to industrial activities at its b..

The rediscovery of Mendelism and the subsequent idea of chromosomal basis of inheritance, paved way for several significant discoveries in the field of heredity. Many other patterns of inheritance which cannot be explained on the basis of Mendel's laws alone, were discovered in plant and anima..

Metals and Non-metals..

Metals and Non-metals..

The resources that can be replenished by the environment are called the renewable resources. These are also called the inexhaustible resources. These resources are constantly recycled in the environment like water. This also includes resources like the solar energy, air, plants, animalsh..

. Cartilage is formed of a flexible matrix secreted by chodroblasts in the lacunae. A bone has dense and inflexible matrix formed of proteinacous matrix of ossein secreted by bone cells called osteocytes. Joint is the meeting place of two bones by the ligaments. Joints are of 3 ..