15 Endocrine Glands and their Functional Roles in a Rabbit
All endocrine structures develops from epithelia or nervous tissues, or from both. It is noteworthy that some structures described here have other important functions, e.g.,…
Biology
Complete Description of the Life History of the Honey Bee
Due to its great importance as a pollinator of flowers and as a producer of honey, the honey bee, Apis mellifica, is described as a…
Concise Description of the Classification of Insects
The class Insecta (insects) is split into two sub classes and twenty – four orders. Here, a very concise outline of the main diagnostic features…
Life History of the Cabbage White Butterfly
The cabbage white butterfly exhibits a fairly typical lepidopteran life history. This butterfly is scientifically known as Pieris brassicae. The adult butterflies appear in May…
Significance of Homospory, Apospory and Apogamy
What is Apospory and Apogamy? Before we describe these terms, we must first understand what homospory and heterospory mean. Homospory describes the condition in which…
How Autotomy and Regeneration Occur in Arthropods
The concept of autotomy is used to describe a defensive mechanism employed by animals to evade predators by way of distracting them or escaping from…
Fundamental Distinction Between Fruits and Seeds
Students sometimes experience difficulty in deciding whether a particular specimen is a fruit or a seed. Fruits and seeds have become quite a ‘confusing'(in biological…
Growth Pattern and Ecdysis in Crayfish
Growth occurs by division and consequent enlargement of the cells of all tissues except the nervous tissues in crayfish. No increase in size is apparent…
The Functional Role Of Hormones in Annelids
Most of the investigations into annelids have been carried out on polychaetes, particularly several species of nereids. It has been shown that growth, reproduction, regeneration…
Evolutionary Adaptations of Mammals for a Successful Life
It must be remembered that apart from evolutionary changes in structure and function, the rise of the mammals practically coincides with the rise of the…