Question

प्र.5 पोरिफेरा संघ के दो लक्षण लिखिये।
Write two characteristics of Phylum Porife
अथवा/OR
शैवाल के दो आर्थिक महत्त्व लिखिये।
Write two economic importance of Algae.
प्र.6 न्यूक्लियोटाइड क्या है?​

Answer 1

Answer:

economic importance of algae :

1. In fish farming , it play an important role in production process .

2. It help in maintaining health of marine ecosystem because algae are observant of carbon dioxide and provide oxygen to water .

3. food source : porphyra , laminaria are edible .

Answer 2

Answer:

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