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Q. Illustrate Morphological Evidence?
Morphology is the study of structure and form of plants and animals usually dealing with the organism and its component organs. Morphological evidence provides the basic language for plant characterisation, identification, classification and relationship. Morphological data are easily observable and obtainable, and thus most frequent1 used in taxonomic studies. The growth habit of herbaceous or woody plants is useful in classification. The root structural types like tap root system (Fusiform, Napiform) and adventitious root systems (Fascicled, Fibrous) classify plants into two major groups namely monocots and dicots. In monocots the number of cotyledons is one (corn) and these are characterised by adverititious roots while in dicots the number of cotyledons is two (Lima Bean, Castor Bean) and these are characterised by tap root system.
Vegetative underground structures such as rhizomes, corms, and bulbs also characterise a group. Also the classification of plants into two groups namely dicots and monocots is based on the arrangement of leaves and their venation. Monocots are characterised by parallel venation, while dicots are characterised by reticulate venation.
give the discriptive account of nerilla which belongs to class arciannelida in phylum annelida
Oligosaccharides Compounds containing 2 to 6 monosaccharides units joined by a glycosidic linkage.
Various acute complications of diabetes mellitus are described in this unit. Acute complications develop within a short period of time. These are due to improper treatment of diabe
Promoters The promoter region contains the DNA sequences that allow the formation of the transcription initiation complex that give the specificity of expression. Promoters are
Sterility in Angiosperms Sterility in angiosperms may arise due to several causes. Either the anther may not be formed, or anthers are formed but meiosis may be abnormal. A
Q. Abolition of Arrhythmias by Exercise? The induction of arrhythmias by exercise is well recognized, but the abolition of ectopic activity is less commonly appreciated. The me
What is the external rigid carapace of arthropods called? Of which substance is it made? Which type of organic molecule is that substance? The external carapace of arthropods i
Explain the term- Horizons These processes take a long time- may be a few thousand years to create a soil. As the time passes, the soil matures and generally becomes deeper and
Q. Concerning the number of hosts how are parasites classified? The Parasites that require only one host are called as monoxenous parasites. The Parasites that need more than o
Most of them happen on mucous membrane. Allergens enter the body by the process of inhalation or ingestion.
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