Question
Write down four characteristics of Ctenophora and give two examples.
Write down four characteristics of Ctenophora and give two examples.
Example: Pleurobrachia and Cestum.
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What is lymph? Describe its function.
Define plant breeding? Describe the various methods of plant breeding.
A field with maize and soybean plants is shown here.

What is phenomenon through which certain pollutants get accumulated in tissues in increasing concentration along the food chain, called?
What are permanent tissues of the plants? Give their characteristics.
