ZOOLOGYTALKS POST - ZOOLOGYTALKS

PLASMODIUM (MALARIAL PARASITE)
INTRODUCTION • Plasmodium (Malarial [...READ FULL]
GROWTH HORMONE DEFICIENCY
Introduction Growth hormone deficiency (GHD) is a [...READ FULL]
CROSSOPTERYGII :- STRUCTURE AND AFFINITIES
Crossopterygian, (subclass Crossopterygii), any member of a group of primitive, lobe-finned, bony fishes believed to have given rise to the amphibians and all other land vertebrates. [...READ FULL]
ENTOPROCTA – STRUCTURE, LIFE HISTORY AND AFFNITIES
The Entoprocta or Endoprocta are group of small sessile aquatic animals. In which the body cavity is believed to be pseudocoel. They were formerly include in the phylum Bryozoa which however are true coelomate animals. [...READ FULL]
HOLOCEPHALI – GENERAL ORGANIZATION AND AFFINITIES
Holocephali (Gr. Holos = entire + kephale = head), is a very small ancient group of highly specialized marine fishes. It comprises of rat-tailed fishes. They appeared first in the lower Jurassic and at present, are represented by a few marine genera only. It includes the only cartilaginous fishes having fleshy opercular covering of the gills. [...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]
ECTOPROCTA – STRUCTURE LIFE HISTORY AND AFFINITIES
The Ectoprocta are minute, sessile, colonial, unsegmented coelomate animals. Provided by the circular or cresentic lophophore, a u-shaped alimentary canal with anus opening near the mouth but outside of lophophore. Usually posses free swimming larva but without nephridia or circulatory system. [...READ FULL]
SPECIES CONCEPTS (DIFFERENT SPECIES CONCEPTS)
The categorization and maintenance of species records is important for science and conservation. For identifying an individual species, typically scientists will first consider Biological Species Concept, then descent from common ancestry and genotypic and phenotypic cohesion. Species concepts are still subject to debate. [...READ FULL]
COMPARATIVE ANATOMY OF VERTEBRATE RESPIRATORY SYSTEMS
Introduction The comparative anatomy of [...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]