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ORGANS AND MECHANISM OF RESPIRATION IN HIGHER INVERTEBRATES
ORGANS AND MECHANISM OF RESPIRATION IN HIGHER INVERTEBRATES :- There are generally three common ways through which invertebrates can perform the process of respiration. These are cutaneous respiration which is mainly performed by lower invertebrates and annelids other is respiration through trachea and gills. [...READ FULL]
EXCRETION IN LOWER INVERTEBRATES
EXCRETION IN LOWER INVERTEBRATES :- Every organism possess different mechanisms, organs and different excretory product. For example porifera and hydra can perform excretion through body surface where as platyhelminthes possess a specialised cells known as flame cells. [...READ FULL]
BIOSYNTHESIS OF FATTY ACID, CHOLESTROL AND MEMBRANE LIPID
INTRODUCTION BIOSYNTHESIS OF FATTY ACID, [...READ FULL]
AERIAL ADAPTATIONS IN VERTEBRATES
The aerial adaptations are concerned with the flight. The flight is a form of locomotion in the air under which the body has to be firstly prevented from falling down and secondly moved forwards, the speedier the better. Thus, aerial adaptations must include modifications in the animals body for reducing the weight of the body and also for the formation of organs capable of executing the flight. [...READ FULL]
CANCER CELLS VS NORMAL CELLS
INTRODUCTION Cancer, also called malignancy, is [...READ FULL]
ONCOGENES AND CANCER
A disease in which cells divide abnormally and destroy body tissues. Three classes of genes are responsible for the onset of cancer. First one is proto oncogene the normally promotes cell growth. After mutation proto-oncogene changes into oncogene whose products are excessively active in growth promotion. [...READ FULL]
FUNCTIONS OF ENDOPLASMIC RETICULUM
FUNCTIONS OF ENDOPLASMIC RETICULUM The ER enables [...READ FULL]
MODE – DEFINITION AND CALCULATION
Mode is the value of the variable which occurs most frequently in a distribution. Mode is also positional average which can be located by inspection. [...READ FULL]
ADVANCED NERVOUS SYSTEM IN ARTHROPODA
NERVOUS SYSTEM IN ARTHROPODA is as advance as in Annelida. There is dorsal brain again connected with nerve ring to ventrae nerve cord. The arthropod nervous system consists of a dorsal brain and a ventral, ganglionated longitudinal nerve cord (primitively paired) from which lateral nerves extend in each segment. [...READ FULL]
CAUSES OF EXTINCTION OF WILDLIFE
Introduction This article includes comprehensive [...READ FULL]