Protection , Support & Movement in Animals
rubabIntroduction 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…
FAMILY 6: Rutaceae – characters , Floral formula, importance & pattern
sidraDiagnostic 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…
Reproduction in Viruses (Replication of viruses)
abidaViruses 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…
CLASSIFICATION OF VIRUSES
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…
Viruses – structure
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
saadiaSUBJECTIVE 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…
Euphorbiaceae – Characters , formula , floral diagram & Importance
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;…
DEFINITIONS AND KEY POINTS FOR OBJECTIVES OF PLANT DIVERSITY
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…
DIVESITY OF PLANTS
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…
FURTHER PHYLOGENETIC CONSIDERATIONS
FURTHER PHYLOGENETIC CONSIDERATIONS Debate is still going on the position of these phyla. There are different views aboutthe origin of these phyla 1. Polyphyletic: It means that all phyla have…