Evolution of symmetry and segmentation of Metazoa

By Nitul Kalita

Evolution of symmetry and segmentation of Metazoa












Comments

Post a Comment

Popular posts from this blog

Study of Euglena | General characters and classification

By Nitul Kalita
Image
Study of Euglena with General character and classification- General characters-  1. Habitat  : it is found in a stagnant fresh water such as pools and ponds which contain decaying organic matter. 2.  Locomotion  : Euglena moves by the whiplike action of a single flagellum. As Waves pass al ong the flagellum from the base to the tip. The organisms rotate as it moves. It can also move by the contraction of fibrils in its body called Myonemes. These contraction brings about a sequence of changes in the shape and cause euglenoid movement. 3. Euglena viridis is a green and photo-autotrophic organism.The Euglena absorb carbon dioxide from the water in which he lives and energy from the sunlight to carry photosynthesis. It make up its nitrogen requirements by absorbing nitrogenous substances such as amino acids from the water. 4. Structure : Euglena is a microscopic organisms of about 0.125mm long. It h
Read more

General Characteristics and Classification of Protozoa

By Nitul Kalita
Image
A Brief introduction to Phylum Protozoa The Protozoa are heterogeneous gathering of somewhere in the range of 50,000 cell or single-cell life form discovered worldwide in many environments. Protozoa signifies 'first creature' the least difficult type of creature life.  Protozoa are unicellular microorganisms (eukaryotes) that need cell dividers. They are found in  marine living space or soil, in new water bodies, advantageous, a few structures are parasites in other  life forms. Protozoa relies upon nourishment, temperature, pH, and some relies upon daylight.  Protozoa were characterized as unicellular protists with creature like conduct, for example, development.  Protozoa were viewed as the accomplice gathering of protists to protophyta, which have plant-like  conduct, for example photosynthesis. The term protozoan has gotten exceptionally hazardous due to the presentation of current ultra basic, biochemical, and hereditary systems, which have app
Read more

Life Cycle and pathogenicity of Wuchereria bancrofti

By Nitul Kalita
Image
Life Cycle and pathogenicity of Wuchereria bancrofti Classification- Phylum- Nematoda Class- Phasmida Order- Filaroida Genus- Wuchereria Species- bancrofti Wuchereria bancrofti  is commonly known as filarial worm. This worm causes filariasis in humans. The name of this worm is given Wuchereria bancrofti in honor of the two scientists Wucherer and Bancroft who made considerable contribution in studying the disease caused by these worms. LIFE CYCLE OF WUCHERERIA Wuchereria is a heterogeneous parasite which completes its life cycle in two different hosts namely man and female culex mosquito. Life cycle in Man- This cycle is also known as Human Phase. The process of copulation takes place in the lymphatic system of the human. The male and female worms copulate when they are present in the same lymph gland. The female worms are ovoviviparous that is they produce eggs which hatch within the body of the female without obtaining nour
Read more