Three structures shared by every chordate which typify group
Write down the three structures shared by every chordate which typify the group?
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All beings of phylum Chordata encompass branchial clefts in pharynx (in some species present only in embryo), notochord (substituted through spinal column in vertebrates) and dorsal neural tube.
Describe briefly the problem that the theory of evolution and its rival theories strive to solve?
Describe the number of chromosomes does a human normal haploid cell contain? Also determine the number of chromosomes does a human normal diploid cell contain? How many are sex chromosomes in each of them?
Explain Male Reproductive System Testes. Also explain how its work with the help of figure.
How photosensitivity in annelids, cnidarians and worms distinct from insects, cephalopods and vertebrates?
what is the role of carbohydrates in plasma?
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Why does bark frequently break and die naturally?
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Give a brief description of the term secondary roots? In origin how secondary roots discriminate from shoots?
Explain the DNA ligases? How do these enzymes participate within the recombinant DNA technology?
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