Answer / Hirendra Kumar

The pleura is a thin serous membrane that lines the inside of the chest cavity (parietal pleura) and covers the lungs (visceral pleura). It produces a lubricating fluid to reduce friction during breathing.

How are animals classified according to the germ layers present in their embryonic development?

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What are peritoneum?

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What is placenta?

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Explain vegetal pole?

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How is the mesoderm of triploblastic animals formed?

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What is the main function of placenta?

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Define polyembryony?

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What are the destinations of the archenteron and of the blastopore?

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Explain blastopore?

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What are the animal pole and the vegetal pole of the vertebrate egg?

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What is the chorioallantois membrane present in the embryonic development of reptiles and birds?

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In which type of animals does the placenta exist?

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