The Fundamental Unit of Life — Science STD 9 — Question

Why is life on Mars and Venus planets not possible?

Which one of the following crops require a minimum quantity of NPK or urea for its proper growth paddy, peas, wheat, sugarcane.

1. Farmers use high-quality seeds, do not adopt irrigation or use fertilizers.
2. Farmers use ordinary seeds, adopt irrigation and use fertilizer.
3. Farmers use quality seeds, adopt irrigation, use fertilizer and use crop protection measures.

Name four Chordata classes having cold blooded animals.

Name the physical divisions of biosphere.

What is leucocyte count of normal humans?

How is the complexity of cell structure and their number used in classification?