Classify the animals with an example each based on the chief excretory product produced in them.

Classify Phylum Coelenterata with an example for each class.

Classify Phylum Platyhelminthes with an example for each class.

Which of the following is correctly matched for the product produced by them

Which of the following is correctly matched for the product produced by them

Classify Phylum Mollusca by giving examples for each class.

Uric acid is the chief nitrogenous component of the excretory products of :

(i) Deficiency of which vitamin causes rickets? (ii) Give an example each of fibrous protein and globular proteins. (ii) Write the product formed on reaction of D - glucose with Br_(2) water .

A cottage industry produces a certain number of pottery articles in a day . It was observed on a particular day that the cost of production of each article (in rupees ) was 3 more than twice the number of articles produced on that day. If the total cost of production on that day was 90 , find the number of articles profit and the cost of each article.

Solve the problems. John and Jivanti together have 45 marbles .Both of them lost 5 marbles each, and the product of the number of marbles they now have is 124. We would like to find out how many marbles they had to start with.