Class 8 science chapter 1 extra questions part 2

Q. 1. Name the machine used for sowing seeds.
Answer: ‘Seed drill’ is a machine used to sow seeds. Seed drill is a funnel with a long 
and hollow. The seeds are put into the funnel and the seeds go down in the soil one by 
one. In the large farms mechanised drills attached to the tractors for sowing seeds.
Q. 2. The damaged seeds float on the water surface. Give reason.
Answer: Damaged seeds become hollow and lighter. Therefore they float on water.
Q. 3. Give the meaning of the term ‘broadcasting’ with respect to agriculture.
Answer: Broadcasting is a method of seed sowing. In this method, seeds are spread or 
sprinkle in the crop field. Example of such crop is coriander.
Q. 4. Name one plant of crop that is transplanted from nursery.
Answer: Transplantation is a process in which seedlings are grown in a nursery and 
then these are transferred to the main field. Examples are Paddy, tomato and chilly.
Q. 5. Mention the advantages of transplantation of seedlings into main field.
Answer: The transplantation has the following advantages:
(a) It gives choice to select only healthy seedlings for transplantation.
(b) It promotes a better development of shoot (stem and leaves) system of plants.
(c) The seedlings are planted in the right space to avoid overcrowding.
(d) It ensures that each plant gets the uniform resources such as water, nutrients and 
sunlight.

Comments

Post a Comment

Popular posts from this blog

Class 8 science chapter 1 very short questions with answers

Very Short Answer Questions Q. 1. If you are given a dry piece of land for cultivation what will you do before  sowing the seeds? [NCERT Exemplar] Ans: The field will be watered, tilled and ploughed before sowing seeds. Q. 2. During which months do farmers grow mustard in India? [NCERT Exemplar] Ans. October to March. Q. 3. Which activity of the farmer can promote growth of earthworms and  microbes in the field? [NCERT Exemplar] Ans. Loosening the soil/maintaining high moisture levels in soil. Q. 4. What are organic foods? [NCERT Exemplar] Ans. Crops cultivated without using any chemicals like fertilisers, pesticides,  weedicides, etc. are called organic foods. Q. 5. Why does a farmer rotate crops in a field? Ans. A farmer rotates crops as it maintains fertility of soil, gives better yields and  prevents crop diseases and pests. Q. 6. What do you mean by transplantation? Ans. The process of shifting seedlings from the nursery to the main field is called  transpl...
Read more

CLASS 8 HISTORY CHAPTER 1 SHORT QUESTIONS

Short Answer Questions Q. 1. How did James Mill view India? Ans. James Mill was not very positive towards India and considered Asian society as a whole at lower level of civilisation than Europe. He was well aware of religious intolerance, caste taboos and superstitious practices that dominated Indian social life. He suggested that the British should conquer all the territories of India to ensure the enlightenment and happiness of Indian people. For India was not capable of progress without the help of the British. He had a strong opinion that only British rule could civilise India. Q. 2. How did the British conquer India and establish their rule? Ans. The British conquered India in the following ways: (a) They conquered and overpowered local nawabs and rajas. (b) They gained control over economy and society. The collected revenue helped them to meet all their expenses. (c) They brought changes in rulers, tastes, customs and practices. Thus, they moulded everything in their favour. Q. ...
Read more