Lesson 9 – J.C. Bose: A Beautiful Mind | Chapter Solution Class 7

Activity 1

Choose the correct answer from the given option:

(a) Jagadish Chandra Bose studied in  –

1. Hindu School
2. Hare school
3. Ballygunge  Government School

(b) Bose met Father Lafont at –

1. Cambridge
2. London
3. St. Xavier’s College

(c) Bose graduated with B.S.c From –

1. University of Cambridge
2. University of Oxford
3. University of London

Answer

1. (ii) Hare School
2. (iii) St. Xavier’s College
3. (iii) University of London

Activity 2

Fill in the chart with information from the text :

Answer

Activity 3

Complete the following statements with information from the text:

1. Bose’s father used to work as ____
2. ____ was the leader of the Brahmo Samaj
3. In his school days Bose’s playmates were ____
4. Bose went to England to ____

Answer

1. Bose’s father used to work as a Deputy Magistrate in Faridpur, Burdwan, and in other places.
2. Bhagwan Chandra Bose was the leader of the Brahmo Samaj.
3. In his school days, Bose’s playmates were the son of the Muslim attendant of his father (who sat on his right side) and the son of a fisherman (who sat on his left side).
4. Bose went to England to study Natural Science.

 Activity 4

Answer the following questions:

1. Why did Jagadish Bose receive his early education in a Vernacular
2. What did Bose’s mother do when he brought his friends home from school?
3. Who was Lafont? How did he influence Bose?
4. Why did Bose refuse to accept his salary?

Answer

1. Jagadish Bose received his early education in a Vernacular school because his father believed that one must know their mother tongue before learning any other language. His father also emphasized the importance of knowing one’s own people.
2. When Bose brought his friends home from school, his mother welcomed and fed all of them without discrimination. She treated them equally, regardless of their backgrounds or social status.
3. Lafont refers to Jesuit Father Eugene Lafont. He played a significant role in developing Bose’s interest in natural science. Lafont was a teacher at St. Xavier’s School in Calcutta, where Bose came in contact with him. It was under Lafont’s guidance and influence that Bose’s interest in natural science grew.
4. Bose refused to accept his salary at Presidency College as a sign of protest. He was not provided facilities for research and was offered a lower salary than his European colleagues. His refusal to accept the salary was a demonstration of his remarkable sense of self-respect and national pride, highlighting the unequal treatment he faced compared to his European counterparts. Eventually, after his protest, he was offered a permanent teaching post.

Activity 5

Match the single words in their expended forms:

Answer

Activity 6

Identify which of the following statements are True and which are False. Give a supporting statement for your answer:

1. Crescograph was invented by Marconi.
2. Marconi got the patency right for wireless telegraphy.
3. Bose was awarded Knighthood in 1919.
4. No other Bengali writer had written science fiction before J.C. Bose.

Answer

1. False; Bose had invented several sensitive instruments. One of them is Crescograph.
2. True; It was the Italian Science Marconi who got the patency right for the invention of the wireless telegraph.
3. False; Bose was awarded Knighthood by the British government in 1917.
4. True; He was the first writer of science fiction in Bangla.

Activity 7

Complete the statements :

1. Crescograph is used to ____
2. Bose proved that plants are ____
3. In 1917 Bose founded ____
4. Bose Institute was founded in ____

Answer

1. A crescograph is used to measure the growth rate of plants.
2. Bose proved that plants are sensitive to heat, cold, light, noise, and other external stimuli, similar to human beings.
3. In 1917, Bose founded the Bose Institute.
4. Bose Institute was founded in Calcutta.

Activity 8

Answer the following questions:

1. ‘Bose had invented several sensitive instruments’. Name a ‘sensitive instrument’ invented by J.C. Bose. What is its use?
2. What did Bose prove by his experiments on plants?
3. Do you think Bose prove by his experiments on plants?
4. What were the various awards and honours conferred on Bose?
5. Name some of his books and publications.

Answer

1. One sensitive instrument invented by J.C. Bose is the Crescograph. It is used to measure the growth rate of plants.
2. Bose proved through his experiments on plants that they are sensitive to external stimuli such as heat, cold, light, and noise. He showed that plants respond and behave in a manner similar to human beings, although with a slower response time.
3. Yes, Bose demonstrated through his experiments on plants that they exhibit sensitivity to various stimuli, similar to human beings. He showed that plants react and respond to external factors, challenging the notion that plants are passive and unresponsive entities.
4. J.C. Bose received several awards and honours during his lifetime. Some of them include Knighthood by the British government in 1917, being conferred the title of “Fellow of the Royal Society,” and being named a “Companion of the Order of the Indian Empire.”
5. Some of J.C. Bose’s books and publications include “Response in the Living and the Non-living” (1902), “The Nervous Mechanism of Plants” (1926), and “Major Mechanism of Plants” (1928). Additionally, he wrote a science fiction book called “Niruddesher Khoje” in 1896, which is considered the first science fiction book in the Bengali language.

Activity 9

Read the following passage and underline the adverbs. An example is given:

Shanti is a young girl. She lives in a remote village with her family. Her school is five miles away from there. But Shanti attends her school daily. She stood third in her class in the previous examination. She believes that she can do better. She is now concentrating on her studies more seriously. Shanti never behaves rudely with her classmates. So they like her. She follows her teachers attentively in class. Therefore the teachers really like her. They often enquire whether she is facing any problems. Why do many teachers think that Shanti is the best girl in the class? It is because Shanti has faced the challenges of life bravely.

Answer

Shanti is a young girl. She lives in a remote village with her family. Her school is five miles away from (there). But Shanti attends her school (daily). She stood third in her class in the previous examination. She believes that she can do (better). She is now concentrating on her studies (more seriously). Shanti (never) behaves rudely with her classmates. So they like her. She follows her teachers (attentively) in class. Therefore the teachers really like her. They often enquire whether she is facing any problems. Why do many teachers think that Shanti is the (best) girl in the class? It is because Shanti has faced the challenges of life (bravely).

Activity 10

Now put the underlined adverbs from the above passage in the chart according to their functions. One is done for you

Answer

Activity 11

Transform the degree of adjectives of the following sentences as directed:

1. Plants are as sensitive as animals.(change into comparative degree)
2. Simla is cooler than Kolkata. (change into positive degree)
3. Umesh Yadav is the fastest bowler in the Indian cricket team. (change into comparative degree)
4. Ishant Sharma is taller than any other Indian cricketer. (change into superlative degree)
5. Mt. Everest is the highest mountain in the world. (change into positive degree)

Answer

1. Plants are more sensitive than animals.
2. Simla is cool.
3. Umesh Yadav is faster than any other bowler in the Indian cricket team.
4. Ishant Sharma is the tallest among all Indian cricketers.
5. Mt. Everest is a high mountain.

Activity 12

In this lesson, you have read the biography of a great Indian scientist. Now write a biography (in about 80 words) of Prafulla Chandra Roy, who was another great Indian scientist. You can use the following hints:

Birth: 1861, Khulna, now in Bangladesh-education: village pathshala, Hare School, Albert School, passed Entrance examination (1879), F.A. from Metropolitan College (1882)-won Gilchrist scholarship(1882)—went to London-B.Sc. from Edinburgh University(1882-84), D.Sc., Edinburgh University-Professor of Presidency College (1889)-first to prepare Mercurous Nitrite in laboratory (1896)-established Bengal Chemicals (1901)-joined Science College as Palit Professor-death:1944

Answer

Prafulla Chandra Roy, born in 1861 in Khulna (now in Bangladesh), was a renowned Indian scientist. He received his early education at a village Pathsala and later attended Hare School and Albert School. After passing the Entrance examination in 1879, he pursued his F.A. from Metropolitan College in 1882. Prafulla Chandra Roy’s academic brilliance earned him the prestigious Gilchrist scholarship in 1882, which led him to London. He obtained his B.Sc. from Edinburgh University (1882-84) and went on to earn a D.Sc. from the same university. In 1889, he became a Professor at Presidency College, Kolkata. Notably, Prafulla Chandra Roy was the first scientist to successfully prepare Mercurous Nitrite in a laboratory in 1896. In 1901, he established Bengal Chemicals, making significant contributions to the field of chemistry. Later, he joined Science College as the Palit Professor. Prafulla Chandra Roy’s impactful career in science came to an end with his demise in 1944.

Activity 13

You have come to know that the local postman has delivered your letter to your neighbour’s house by mistake. Write a letter to the post office with a request to return the letter to you.

Answer

Dear Sir/Madam,

I hope this letter finds you in good health and high spirits. I am writing to bring to your attention an unfortunate incident regarding the delivery of a letter by our local postman.

On [date], I sent a letter through the postal service, addressed to [Recipient’s Name] at [Recipient’s Address]. Regrettably, due to an inadvertent error, the letter has been delivered to my neighbour’s house, located at [Neighbor’s Address]. I have personally confirmed this with my neighbour, and they have kindly handed over the letter to me.

I kindly request your assistance in rectifying this situation. I would be grateful if you could arrange for the prompt retrieval of the misdelivered letter from my neighbour’s house and deliver it to the correct recipient, [Recipient’s Name], at the intended address [Recipient’s Address]. The letter holds significant importance, and I am eager for its safe return.

To facilitate the process, I have provided the necessary details below:

Sender’s Name: [Your Name]

Sender’s Address: [Your Address]

Recipient’s Name: [Recipient’s Name]

Recipient’s Address: [Recipient’s Address]

Tracking Number (if applicable): [Tracking Number, if available]