Which animal group lacks a backbone and includes insects worms and molluscs?

Which cell organelle is primarily responsible for breaking down waste materials and cellular debris?

Which common everyday substance is used to test for the presence of starch in food by turning blue-black?

Which part of the plant is responsible for anchoring it in soil and absorbing water and minerals?

Which term describes the process by which a gas changes directly to a solid without passing through the liquid state?

Which vitamin deficiency commonly causes the disease scurvy?