Monthly archives: November, 2015

Epigynous Flowers

1.The upper part of thalamus is usually flask-shaped or tubular. 2.Calyx, corolla and androecium arise from above the level of ovary. 3.Ovary is inferior while all other floral parts are superior. 4.The ovary is completely inserted and the wall of ovary is fused with the thalamus. 5.Calyx, corolla and androecium develop jointly from the neck …

Perigynous Flowers

1.The upper part of thalamus may be disc shaped, cup-shaped or flask-shaped. 2.Calyx, corolla and androecium arise from around the ovary and not beneath it. 3.Ovary is half-superior/half-inferior. 4.The ovary is placed at the bottom of cup or flask-shaped thalamus. Ovary wall is not fused with the thalamus. 5.Calyx, corolla and androecium often develop from …

Hypogynous Flowers

1. The upper part of thalamus is slightly swollen and forms a cushion like disc. 2. Calyx, corolla and androecium arise below the level of ovary. 3. Ovary is superior while all other floral parts are inferior. 4. The gynoecium is placed at the top of the thalamus. The wall of ovary is not fused …

Carpels Or Gynoecium

• Carpels or female reproductive parts form the innermost whorl of a flower. The free occurring unit of gynoecium is called pistil, which consists of basal swollen ovary, a stalk like style and a terminal receptive part called stigma. • Depending on the number of carpels, gynoecium may be monocarpellary, bicarpellary, tricarpellary, tetra- carpellary and …

Stamens or Androecium

• Stamens are the male reproductive parts of a flower. A stamen is made up of two parts, a stalk like filament and a knob like terminal anther. Each anther has two lobes which are attached at the back by a sterile band called connective. • In majority of angiosperms, anthers are two lobed or …

All India Pre-Medical / Pre-Dental Entrance Examination (AIPMT) 2016

All India Medical Entrance Examination for admission to mbbs/bds course, 2016 under 15% merit positions in medical/dental colleges. The Central Board of Secondary Education (CBSE) will be conducting the All India Pre-Medical/ Pre-Dental Entrance Examination for 2016 under 15 per cent merit of All India Quota seats in Government Medical and Dental Colleges all over …

Ecological Pyramids

The ecosystem is characterized by the energy flow and the circulation of materials through its members. Different organisms of an ecosystem are linked together by their nutritional requirements. Individuals related in this manner constitute a food chain. Each food chain contains many steps comprising of producers, herbivores, primary carnivores and so on. Each step of …

Animal Husbandry

Animal husbandry is the forming or management of animal livestock which includes various aspects such as animal’s shelter, feeding, breeding, health and disease control. Animal breeding A group of animals related by descent and similar in most characters like general appearance, features, size, configuration, etc. Is called ‘breed’. Animal breeding Is producing improved breeds of …

Disorders of neural system

Multiple sclerosis is an autoimmune disorder where there is a progressive destruction of the myelin sheath of the neurons in the central neural system. The destroyed region of the myelin sheath forms scar tissue or plaques. Every time new plaques are formed, a fresh attack occurs. Symptoms include weakness in muscles, double vision and other …