Gujarat Board | Class 10Th | English (Blackbuck-Supplementary Reader) | Model Question Paper & Solution | Chapter – 7 Daring Discovery

1. Dr Jagdish Chandra Bose (1858-1937) was a great Indian scientist. He surprised the whole world with the declaration that the plants too live like other living beings.

He also discovered that like other living beings, plants are also hurt and shocked. By another experiment he also showed that the plants could also be made unconscious by some strong intoxicant. With his experiments a new world of plant kingdom was discovered.

In 1902, Dr Jagdish Chandra Bose wrote many articles about his experiments on plant kingdom. He published them in his book ‘The Reaction of Living and Non-living’.

(1) What was Dr Bose?

(2) How did he surprise the world?

(3) Dr Bose discovered that like the other living beings, ….

(4) What did Dr Bose prove with his experiment?

(5) Dr Bose wrote many articles about

(6) Write the title of the book written by Dr Bose.

(1) Dr Bose was a great scientist.

(2) He surprised the world by declaring that the plants too live like other living beings.

(3) Dr Bose discovered that like other living beings, plants are also hurt and shocked.

(4) With his experiment, Dr Bose proved that plants could be made unconscious by some strong intoxicant.

(5) Dr Bose wrote many articles about his experiments on plant kingdom.

(6) The Reaction of Living and Non-living.

2. Dr Bose invented an instrument. It is called ‘Optical Pulse Recorder’. It can record the process of contraction in plants. He also recorded the internal activities of the plants by this instrument. Thus, he showed the similarity in the behaviour of lizards, frogs and tortoise; fruits, vegetables and plants. He also discovered that the plants also generate electric waves and feel tired like all other living beings. During one of his experiments he found that a dying plant released a strong electric current.

He also proved that the carbon dioxide affects the life of plant very badly. Excess intake of carbon dioxide can cause death to the plants. They can be survived by providing oxygen like human beings.

(1) Which instrument did Dr Bose invent?

(2) What did the Optical Pulse Recorder do?

(3) What did Dr Bose discover about plants?

(4) What did Dr Bose find during one of his experiments?

(5) What did Dr Bose prove about plants and carbon dioxide ?

(6) How can we save the plants dying due to excess intake of carbon dioxide?

(1) Dr Bose invented the Optical Pulse Recorder.

(2) The Optical Recorder recorded the process of contraction in plants and the internal activities of the plants.

(3) Dr Bose discovered that plants generate electric waves and feel tired like all other living beings.

(4) During one of his experiments, Dr Bose found that a dying plant released a strong electric current.

(5) Dr Bose proved that carbon dioxide affects the life of plants very badly and excess intake of carbon dioxide can also kill the plants.

(6) We can save the plants dying due to excess intake of carbon dioxide by providing them with oxygen like human beings.

3. By one of his outstanding experiments he proved that the plants also feel intoxication on giving some narcotic. He also proved that the activities of plants occurred with the energy gathered by the plants. They collected this energy from their surroundings. They stored this energy in them.

In 1918, Dr Bose developed a new instrument. It was called “Crescograph”. It enlarged the movements of the plants ten thousand times. It also noted down the changes occurred in the plant within one minute.

(1) What did Dr Bose prove about intoxication in plants?

(2) What did Dr Bose prove about activities of plants?

(3) Which instrument did Dr Bose develop ?

(4) What did the Crescograph do?

(5) What did the Crescograph note down?

(1) Dr Bose proved that plants also feel intoxication on giving some narcotic.

(2) Dr Bose proved that activities of plants occurred with the energy collected by them from their surroundings.

(3) Dr Bose developed an instrument called ‘Crescograph’.

(4) The Crescograph enlarged the movements of the plants ten thousand times.

(5) The Crescograph noted down the changes that occurred in a plant within one minute.

4. About Dr Bose’s work, a French thinker Henry Bergson said that the Bose’s work gave speech to the mute plants. His work helped us to understand the plants world. Now we know what the plants want, when do they suffer, and what pleases them. We can feel the voice and breathing of plants by an instrument. Thus, he proved that the plants are living, breathing beings.

The World Physics Congress was held in 1900 in Paris. Bose presented his views. The people were surprised at his views. He explained that the physical events could not be confined to any limit. The difference between the living and non-living was not so vast. It was also not impenetrable as we mostly thought.

(1) What did Henry Bergson say about Dr Bose’s work?

(2) According to Henry Bergson, what do we know about plants?

(3) What can we feel by an instrument?

(4) What did Dr Bose explain in the World Physics Congress?

(5) What did Dr Bose say about the difference between the living and non-living?

(6) Dr Bose’s work helped us to understand

(7) How did Dr Bose prove that plants are living beings?

(1) Henry Bergson said that Dr Bose’s work Igave speech to the mute plants.

(2) According to Henry Bergson, we know what plants want, when do they suffer, and what pleases them.

(3) We can feel the voice and breathing of plants by an instrument.

(4) Dr Bose explained that the physical events could not be confined to any limit.

(5) Dr Bose said that the difference between the living and non-living was not vast and also not impenetrable as we mostly thought.

(6) Dr Bose’s work helped us to understand the plant world.

(7) Dr Bose proved that plants are living beings by developing an instrument which helped to feel the voice and breathing of plants.

A. amaze

B. please

C. injure

D. beat

Ans. C. injure

A. note

B. notice

C. observe

D. neglect

Ans. A. note

A. peculiarity

B. strange

C. resemblance

D. unlikeness

Ans. C. resemblance

A. sell

B. import

C. export

D. produce

Ans. D. produce

A. less

B. extra

C. weight

D. load

Ans. B. extra

A. stay alive

B. stay fit

C. stay young

D. stay healthy

Ans. A. stay alive

A. isolated

B. poor

C. average

D. excellent

Ans. D. excellent

A. make smaller

B. make bigger

C. make good

D. make bad

Ans. B. make bigger

A. statement

B. declaration

C. notice

D. opinion

Ans. D. opinion

A. used

B. waste

C. huge

D. tiny

Ans. C. huge

A. real

B. fake

C. written

D. oral

Ans. A. real

A. normal

B. usual

Ans. D. strange