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Water loss during excretion
In terrestrial animals body water is also lost during excretion of nitrogenous wastes. A number of physiological adaptations have taken place to minimise the loss of water associated with this phenomena. You have learnt in the previous Unit that among terrestrial invertebrates, insects are highly effective in conserving water.
In terrestrial vertebrates, kidney is the chief organ of osmoregulation and excretion. The loop of Henle is the specialised part of the nephron which produces hyperosmotic urine. Amphibians and reptiles which are unable to produce a hyperosmotic urine, as an adaptive consequence, cease urine production entirely during the period of osmotic stress.
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
Loading and Unloading of Sieve Tubes In order to understand the loading of food from manufacturing leaf cells to sieve tubes we must examine the anatomy of a minor vein shown
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What are the two mains divisions of the chordate phylum? Chordates are separated into protochordates (cephalochordates and urochordates) and vertebrates. Life Kingdoms Revi
NERV E FIBRES - Axon or dendrite of a nerve cell covered with one, two or three sheaths is called nerve fibre. Dendrites are surrounded only by one sheath. An axon may b
Q. Describe Explicit and Semantic Memory? Explicit memory: This is the conscious recollection of information such as specific facts or events and at least in humans that can be
Homozygous and Weterozygous In an individual two identical alleles may exist [or a given character and, hence, the individual is referred to as Homozygous (e.g. AA and aa). If
Photoperiodism Activity like breeding and migration in animals; flowering, seed germination in plants are regulated by the length of daily period of light and darkness. This be
Lack of iron in the photic zone of the ocean restricts the size of plankton population.Iron is what kind of factor for marine plankton?
Does the trend of the change in shape of the graph as temperature increases differ when a different gas is examined?
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