TERMS - DEFINITIONS Capsid The proteinshell thatenclosesthe viral genome is called a capsid. Capsomeres Capsids are built from a large number of protein subunits called capsomeres. Retroviruses The…
Virus causes different diseases in animal and plants. Viral Diseases in Animals Virus does not produce symptoms directly in the animals (humans). But it indirectly affects the host. I. Some…
Diagnostic characters Habit: Mostly perennial trees, some shrubs. Roots: Fibrous tap root Stem: Woody; spiny; Cylindrical; Leaves: Petiolate; Leave alternate or opposite simple or compound: exstipnlate; reticulate venation. Inflorescence: Terminal…
Viruses are obligate intracellular parasite. They are reproduced only within a host cell. Viruses lack the enzyme for its replication. It uses the metabolic machinery of the host for its…
PHYLUM: VIRA All viruses are belonged this phylum. It has two sub-phyla: Sub-Phylum: Deoxyhelica The sub-phylum includes viruses with DNA core. It has three classes. (i) Class Deoxyhelica: This class…
GENERAL STRUCTURE OF VIRUSES Viruses are infectious particles consisting only of the viral genes enclosed in a shell made up of proteins. The infectious complete body of virus is called…
Diagnostic characters Habit: Annual perennial Herbs, shrubs, or tree; most of plants are xerophytic; presence of milky juice. Roots: Tap root Stem: Herbaceous and fleshy; sPiny; Leaver Sessile or petiolate;…
1 TERMS 11- DEFINITIONS 1' Diversity The presence of variety of plants in the form of different taxas (specie, genera) is calleddiversi of • lant. Systematics The study of kinds…
The presence of variety of plants in the form of different tans (specie, genera) is called diversity of plant. Different plants have different morphology, physiology, cytology and anatomy. It produces…
ROSE FAMILY : Rosaceae Diagnostic characters Habit: Perennial; herbs, shrubs, and trees. Roots: Fibrous tap root and fibrous adventitious roots. 3.. Stem: Herbaceous or woody; stem is covered with prickles.…
abida
sidra