1. Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans? Humans and other multicellular organisms have large bodies and require a lot of oxygen to reach ...

Biology is a crucial part of the Science curriculum in Grade 10. In fact, Biology carries the maximum weightage in the Grade 10 Science paper. With the correct techniques and preparation, it is ...

With the CBSE Class 10 Science exam scheduled for February 25, this guide focuses on the Biology section of the paper. It explains Biology’s weightage in the 80-mark theory exam, lists the key ...