Class 9 Science - Chapter Tissues NCERT Solutions | Name the following. (a) Tissue that f

Diagrammatically show the difference between the three types of muscle fibres.

What does a neuron look like?

Draw a labelled diagram of a neuron.

Complete the table:

Give three features of cardiac muscles.

Where is apical meristem found?

What are the functions of the stomata?

How many types of elements together make up the xylem tissue? Name them.

What is a tissue?

Differentiate between striated, unstriated and cardiac muscles on the basis of their structure and site/location in the body.

Which of the following has more inertia: (a) a rubber ball and a stone of the same size? (b) a bicycle and a train? (c) a five-rupees coin and a one-rupee coin?

State the universal law of gravitation.

Which of the following are matter?

Chair, air, love, smell, hate, almonds, thought, cold, cold-drink, smell of perfume.

A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (Fig. 11.3). Let us take it that the force acts on the object through the displacement. What is the work done in this case?

What is meant by a pure substance?

How does the sound produced by a vibrating object in a medium reach your ear?

In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium observations are in agreement with the law of conservation of mass.

sodium carbonate + ethanoic acid → sodium ethanoate + carbon dioxide + water

What are canal rays?

State any two conditions essential for good health.

How is our atmosphere different from the atmospheres on Venus and Mars?

Why is it difficult to hold a school bag having a strap made of a thin and strong string?

A driver of a car travelling at 52 km h^-1 applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h^-1 in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars travelled farther after the brakes were applied?

In which of the three media, air, water or iron, does sound travel the fastest at a particular temperature?

With the help of Table 4.1, find out the mass number of oxygen and sulphur atom.

The following is the distance-time table of an object in motion:
   Time in seconds       Distance in metres
             0                                    0
             1                                    1
             2                                    8
             3                                   27
             4                                   64
             5                                 125
             6                                 216
             7                                 343
(a) What conclusion can you draw about the acceleration? Is it constant, increasing, decreasing, or zero?
(b) What do you infer about the forces acting on the object?

Convert the following temperatures to the Kelvin scale.

(a) 25°C              (b) 373°C.

If number of electrons in an atom is 8 and number of protons is also 8, then (i) what is the atomic number of the atom? and (ii) what is the charge on the atom?

If Z = 3, what would be the valency of the element? Also, name the element.

An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example.

A person is listening to a tone of 500 Hz sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source?