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Evolutionary relationship among various animal groups is depicted in the cladogram given below. P, Q and R respectively shown:
a. Vertebrae, hair and four limbs.
b. Bony skeleton, hair and amniotic eggs.
c. Vertebrae, amniotic eggs and hair.
d. Respiration by skin, lungs and poikilothermy.
Nerve Cell - The Basic Unit The basic unit of the nervous system is the nerve cell or neuron. A neuron is to the nervous system what a brick is to the building. It has a cell
How is the nervous system characterized in beings of the phylum Annelida? How can one compare cephalization in annelids to cephalization in nematodes and platyhelminthes? Annel
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State the Testing of Ketones in Urine Ketones are also known as ketone bodies. Ketone bodies are catabolic products of free fatty acids and three ketone bodies that can be dete
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