Tissues — Science STD 9 — Question

Which of the following symbol of elements is not taken from Latin names:

Endothelium of the inner surface of blood vessels in vertebrates is formed:

Atomic mass number is sum of number of:

A group of cells alike in form, function and origin are called __________.

The growing of different crops on a piece of land in pre-planned succession is called: 

Life span of RBC is:

The speed of highly penetrating ultrasonic waves is:

1. Lower than those of audible sound waves.
2. Higher than those of audible sound waves.
3. Much higher than those of audible sound waves.
4. Same as those of audible sound waves.

A body is said to be underbalanced forces when the resultant force acting on the body is:

The atomic number of an element is 13 and its mass, mass number is 27. The correct order representing the number of electrons, protons and neutrons respectively in this atom is:

Complete the following sentence:
The potential energy of a body is the energy by virtue of its _______: