In this article we will discuss about Continental Drift:- 1. Continental Drift Theory 2. Peninsular India 3. Paleontological Evidence of Continental Drift 4. Physical Evidence of Continental Drift 5. Palaeoclimate 6. Explanation of the Continental Drift Theory in the Light of Vertebrate Distribution. Contents: Continental Drift Theory Peninsular India Paleontological Evidence of Continental Drift Physical […]
Continental Drift: Theory, Evidences and Explanation
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Difference between Protochordates and Higher Chordates
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The upcoming discussion will update you about the difference between protochordates and higher chordates. Difference # Protochordates: 1. Notochord persists throughout life. 2. No cranium or vertebral column. 3. Atrium, the space in between pharynx and body wall, is present. 4. Endostyle is present except hemichordates. It is the precursor of thyroid gland of higher […]
Is Balanoglossus a ‘Forerunner’ of Chordates?
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Get the answer of: Is Balanoglossus a ‘Forerunner’ of Chordates. According to any standard dictionary ‘forerunner’ means ‘one who runs ahead’ or ‘messenger sent before’. So the claim that ‘Balanoglossus is a forerunner of chordates’ signifies that it stands at the pivotal stage in the direct line of chordate evolution. But this claim is not […]
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