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Define Deuterostomes in animal kingdom?
Coelomate animals are thought to have separated into two divergent lines of evolution in terms of the way embryos develop. In the embryonic development sequence of one group, the mouth forms before the anus forms. These animals are referred to as protostomes. In the second group of coelomates, the anus forms prior to the development of the mouth, and these organisms are called deuterostomes. The members of two Phyla, the Echinodermata and the Chordata, have the deuterostome type of embryological development. Three phyla of uncertain affinity are collectively referred to as the lopophorates. they share a common structure called the lophophore, a u-shaped body fold around the mouth that bears tentacles lined with cilia. The lophophore's function is to collect food.
At the present level of the biotechnology what are the main techniques of genetic engineering? The major techniques of genetic engineering today are: the recombinant DNA techno
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Write an essay on cytological approach in taxonomy.
Relation of Water Content to Functions If an aquatic plant appearing turgid is removed from water and left in the open, it quickly wilts. The water content of the leaves may
Q. What are the main bryophyte groups? The major bryophyte groups are the mosses, the hornworts and the liverworts.
Explain Procedure for Isolation of Pure Culture? Now carry out the exercise following the steps enumerated herewith. 1. Label the name of the organism on the bottom of the p
D i se a s e s of Neonates Calf scour It is also known as dietary diarrhoea and is characterized by foul smelling liquid faeces, and weight loss. E t iolo
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