Diversity in Living Organisms — Science STD 9 — Question

Fill in the blanks.
________ are forms of complex tissue.

Fill in the following blanks with suitable words: At room temperature, the forces of attraction between the particles of solid substances are ____________ than those which exist in the gaseous state.

Cells were discovered by Robert Hooke in ________.

Fill in the following blanks with suitable word:
A heavy ship floats in water because its ______ density is less than that of water.

__________ makes soil porous and allows water and air to peneterate deep underground.

Fill in the blanks in the following statements: The total number of protons and neutrons in the nucleus of an atom is called its __________.

A thick waterproof coating of _________ occurs over the epidermis in desert plants.

Fill in the following blanks with suitable words: In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called _________.

Angular speed of second hand of a clock is radian per second.