Diversity in Living Organisms — Science STD 9 — Question

Fill in the following blanks with suitable word:
The sum of the potential and kinetic energies of a body is called ______ energy.

Fill in the following blanks with suitable words: The particle which is formed by the gain of electrons by an atom is called _________.

Fill in the following blanks with suitable word: Quality of sound depends on _____.

Fill in the following blanks with suitable words: Brass is an alloy which is considered a _________.

Cell theory was refined by __________.

Lodged shoots become upright due to activity of __________.

Fill in the blanks: ____________ are called as amphibians of the plant kingdom.

Surface temperature of moon varies from -190° to __________.

One calorie = ________ joule.

Fill in the blanks in the following statements: Almost all the mass of an atom is concentrated in a small region of space called the __________.