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Describe two pieces of evidence indicating that speciation does not always occur at the same rate.
Some species of moths on the Hawaiian Islands appear to have evolved during the past thousand years, while speciation in other organisms may take millions of years. The fossil record shows that periods of a few thousand years during which lose of species appeared were separated by much longer periods during which there was little speciation.
Q. How do taenias obtain food and make gas exchange? The Tapeworms have sucking and hooks structures on their heads (scolex) that fixate the parasite in the gut wall these stru
Explain about the Cardiovascular and Circulatory System? Aging affects the cardiac muscle causing a diminished resting cardiac output. The capacity of myocardium for cellula
can you tell 10 examples of trinomial system of nomenclature?
Trichomonas vaginalis - Protozoan This cosmopolitan protozoan lives exclusively in the female vagina and male urethra or prostate. It causes a mild disease called trichomonas
What is the difference between heterozygosity and homozygosity? The Homozygosity occurs when an individual has two identical alleles of a gene, for instance, AA or aa. The Het
Explain about the Biofertilizers Biofertilizers, are the cultures of microorganisms used for inoculating seed or soil or both under ideal conditions to increase the availabilit
Q. How are the three major arthropod classes characterized according to the number of limbs? Most crustaceans have five pairs of limbs. Arachnids present four pairs and Insects
Explain Identification of Cancer Cells from Normal Cells? Cancer cells can be distinguished from normal cells by examining them under a microscope. In a specific tissue cancer
LOCOMOTION IN EARTHWORM - By contrection & relaxation of muscles waves are formed in body, generally from posterior to anterior. Setae are helpfull in locomotion. Rate of lo
Q. What is the mechanism by which the neural impulse is transmitted along the axon? The neural impulse is transmitted along the neuronal membrane through depolarization of cons
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