Class 9 Science - Chapter Tissues NCERT Solutions | Where is apical meristem found?

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.

What are the functions of the stomata?

What is a tissue?

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

What are the constituents of phloem?

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 the weight of an object on the moon 1/6th its weight on the earth?

If action is always equal to the reaction, explain how a horse can pull a cart.

What are polyatomic ions? Give examples.

What is the primary characteristic on which the first division of organisms is made?

In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic?

Convert into mole.

(a) 12 g of oxygen gas
(b) 20 g of water
(c) 22 g of carbon dioxide.

Composition of the nuclei of two atomic species X and Y are given as under
                           X        Y
Protons      =       6        6
Neutrons    =       6        8

Give the mass numbers of X and Y. What is the relation between the two species?

A ball is thrown vertically upwards with a velocity of 49 m/s. Calculate
(i) the maximum height to which it rises,
(ii) the total time it takes to return to the surface of the earth.

What are the desirable agronomic characteristics for crop improvements?

Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.