(Mulberry , Family) Diagnostic characters Habit: Mostly tree herbs, shrubs or vines. Roots: Tap root Stem: Woody; gum exudes from the stem. Leaves: Petiolate; alternate; simple; stipulate; Inflorescence: Catkin or…
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…
Introduction An animal is wrapped in a protective covering, the integument, which may be as simple as the delicate plasma membrane of an Amoeba or as complex as the skin…
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…
SUBJECTIVE QUESTION Write note on origin of multicellularity? How was animal originated on land? Give general characteristics of phylum Porifera? Write note on body wall and skeleton of sponges? Write…
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;…
sidra
abida
rubab
saadia