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Q. What do you understand by taxonomy?
Taxonomy is dependent on many sciences and they in turn are equally dependent on it. The activities of a taxonomist are basic to all other biological sciences because it provides an inventory of flora and fauna, schemes to identification, names and a system of classification of plants and animals. Not only is taxonomy basic to other scientific, fields but also it depends on other disciplines like ecology, plant breeding phytosociology, pharmacology and biochemistry. While dealing with taxonomic problems we have to understand the distribution of plants and animals. The scores of thousands of plants known today as species have been established by the application of the existing and established principles of taxonomy. You should know that the accumulated knowledge of Earth's flora is far from perfect and will become more perfect only by exploration of its areas, collection of its components, their study and classification.
Once names and classification systems have been provided there must be methods for us to identify a taxon as being similar to another known entity. We will discuss keys to the identification of plants and animals in Unit 6. In this unit you will study the ecological and phytosaciological aspects of taxonomy, herbaria, botanic gardens and green house.
How are the three main arthropod classes characterized according to the body division? In crustaceans and arachnids the head is fused with the thorax forming the cephalothorax.
Q. What is mitral stenosis? Most common cause of mitral stenosis is rheumatic fever. Nearly 30 per cent of patients with rheumatic fever may go on to develop pure mitral valve
Q. What is the etiological agent and the main manifestations of cholera? The Cholera is a bacterial disease caused by the Vibrio cholerae. The disease is spread by fecal-oral r
In what ways could human activity lead to the extinction of a species in an area? Human activity could lead to extinction of a species by (a) over-hunting, e.g. elephants, rhin
#what is adaptation?
Anemophily - Cross-pollination It is also commonly referred to as wind pollination, i.e., the pollen grains are carried through wind currents. To ensure good pollination t
Q. If a fragment of nucleic acid has a nucleotide sequence TAC can one assert that it is an anticodon or a codon? A nucleic acid having a TAC sequence surely is not tRNA it is
Human lungs A pair of spongy, elastic and bag like structures of lungs is present in the chest cavity, one on either side of the heart. Lungs are enclosed by a double lay
VITAMIN - A Discovered by Macollum. Also known as Retinol / Antixeropthalmic vitamin / Auxerophthol. It is vitamin for normal vision. It forms retinal pigments rho
Q. What do you mean by Hemichordata ? Hemichordates re vermiform (worm-like) animals which have few characters like those of the chordates, hence the name hemichordata (hemi :
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