Detailed structure of prokaryotic cell
What is a prokaryotic cell? Prokaryotic cells are unicellular organism that lacks a defined nucleus surrounded by a complex nuclear membrane and membrane bound organelles.... Read more
Category: Invertebrates
Locust; a swarming grasshopper – Characteristics, Behavior, Locust plaques, the effect on humans and control measures
ocusts are herbivores and can eat plants of its own weight each day which is about 2 grams only but the largest swarms can cause an outbreak in millions and billions together. Read more
Phylum Echinodermata : General Characteristics
The term Echinodermata (Gr., echinos= spiny, derma=skin), was coined by Jacob Klein Echinoderms are triploblastic, radially symmetrical (adult) often pentamerous, larva with bilateral symmetry, sessile... Read more
Phylum Mollusca : General Characteristics
Phylum Mollusca : General Characteristics (L., mollis=soft) Second largest phylum in number ; first being arthropoda Malacology : Study of Mollusca Conchology : Study of... Read more
Phylum Arthropoda : General Characteristics and Classification
Gr. Arthos : Jointed podos: legs Animals with jointed legs Largest phylum in Animal kingdom in both number of taxa and biomass... Read more
Phylum Nemathelminthes / Aschelminthes : General Characteristics and Classification
The phylum ‘Nemathelminthes’ (Gr; nematos = thread ; helminths = worm) or Nematoda comprises the roundworms. Triploblastic, bilaterally symmetrical, vermiform, unsegmented cylindrical true worms with... Read more
Platyhelminthes: Characteristics and Classification
General Characteristics of Platyhelminthes Classification 3 classes on the basis of mode of life, presence or absence of digestive system and cilia in epidermis. Turbellaria (L;turbella... Read more
Phylum Coelenterata : General Characteristics and Classification
Coelenterata Gr., koilos : Hollow; enteron : intestine General characters Metazoa with tissue grade of organization Aquatic : mostly marines few are freshwater forms, e.g.... Read more
Phylum PORIFERA : General Characteristics and Classification
Porifera (L., porus = pore; forre = to bear) Also called: Republic of Cells General Characteristics Sponges are sessile, sedentary and marine except for Family... Read more
Phylum Protozoa : General Characteristics and Classification
Protozoa (Gr., protos = first; zoon = animal) General Characteristics Microscopic and acellular animals Solitary or colonial Body naked or covered by pellicle and provided... Read more