Viruses (F.Sc-Biology-Chapter 5) Part 4
Retroviruses RNA tumor viruses have been known for many years. These viruses are widely distributed in nature and are associated with tumor...
Phylum chordate in Biology
The notochord is a rod-like semi rigid body of vacuolated cells which are filled with proteinaceous material which extends in most cases...
18 Nov 2014
Phylum Hemichordates
Because of their close relationship to chordates these animals are called pre-chordates. The common examples of this phylum...
13 Nov 2014
Phylum Echinodermata – The Spiny skinned animals
The body is covered by delicate epidermis. The mesodermal cells develop a firm calcareous endoskeleton which may bear spines and because of...
10 Nov 2014
Molluscs Classification
The animal can withdraw itself into the shell. Both aquatic and terrestrial species are included in this class. The aquatic species have...
28 Oct 2014
PHYLUM MOLLUSCA (L. Molluscus – soft) - General Characters
The phylum includes over 50,000 living species and is the second largest phylum of invertebrates. Giant squid is the largest invertebrate...
27 Oct 2014
General organization of Arthropods
Arthropods have characteristics of higher forms such as bilateral symmetry, triploblastic, coelomic cavity and organ systems and have...
25 Oct 2014
What is necessary ‘for the very existence of science
Mostly scientist are willing to design intelligent hypothesis based on the existing knowledge. Given the scenario that most science...
20 Oct 2014
What will be the next step of evolution?
Now, life wants a direct vision of reality. All the way through the process of evolution, it is come clean that growth of life rises up...
12 Dec 2013
Reproduction and Life History
There are three morphologically distinct stages in the life cycle; the egg “finally” develops into larva which is converted into...
1 Mar 2013
Phylum: Arthropoda – Animals with Jointed Legs
The body is segmented. Each segment is attached to its neighbor by means of a modified portion of cuticle which is thin and flexible, they...
19 Feb 2013
Grade Bilateria Flat worms Part 3 (F.Sc – Biology – chapter 10)
The body is metamerically segmented. The body becomes divided transversely into a number of similar parts or segments. The subdivisions may...
14 Feb 2013