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Q. Echinoderm identity card. How are echinoderms characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, respiratory system, digestive system, excretory system, circulatory system, nervous system and types of reproduction?
Examples of representing beings: sea cucumber, sea urchin, starfishes. Basic morphology: calcareous endoskeleton with spines, ambulacral system. Type of symmetry: secondary radial, Germ layers and coelom: triploblastics, coelomates. Digestive system: complete, deuterostomes. Respiratory system: nonexistent. Circulatory system: nonexistent. Excretory system: nonexistent. Nervous system: simple, nerve network without cephalization or ganglia. Types of reproduction: sexual, with larval stage.
Q. What is an example of intraspecific competition? The Intraspecific competition occurs in practically all species, for instance, the competition of humans for a job.
Some organisms contain enzymes that condense a fatty alcohol and a fatty acid to generate wax esters. Draw decanol, plamitic acid (C16:0 fatty acid) and the resulting wax ester gen
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Clonal Propagation Most cultivars of ornamental and fruit species and forest trees are highly heterozygous. Consequently, their seed progeny is not true-to-type. To preserve
Assuming independent assortment, what proportion of the offspring of the cross AaBbCcDd × AabbCCdd will have the aabbccdd genotype?
POR T AL CIRCULATION When a vein branches into set of capillary to distribute blood in some parts, such venous circulation is called portal system. Three types of portal syst
Myasthenia Gravis Myasthenia gravis (severe muscle weakness) is characterised by muscular fatigue in the wake of very little exercise. It may be apparent after a short period o
Use of biotechnology in characterization of animal biodiversity. Genetic uniqueness of populations is measured by the relative genetic distances of such populations from each o
SIMILARITIE S BETWEEN CARDIAC AND SKELETAL MUSCLES - Both cardiac and skeletal muscles are made up of elongated fibres which have numerous myofibrils. The myofibrils of
What are the typical vegetation and the typical fauna of the tundra? The Tundra has vegetation formed mainly by lichens and mosses. In the fauna the densely furred animals, lik
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