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P S Verma and V K Agarwal solutions for Class 9 Science chapter 1 - Improvements In Food Resources

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P S Verma and V K Agarwal Class 9 Biology - Science Part 3

Class 9 Biology - Science Part 3 - Shaalaa.com

Chapter 1: Improvements In Food Resources

Short Question Answer (Carrying 2 Marks)Short Question Answer ( Carrying 3 Marks)Long Answer Questions (Carrying 5 marks each)

Chapter 1: Improvements In Food Resources Exercise Short Question Answer (Carrying 2 Marks) solutions [Pages 63 - 64]

Short Question Answer (Carrying 2 Marks) | Q 1 | Page 63

Distinguish between micronutrients and macronutrients. Give suitable examples.

Short Question Answer (Carrying 2 Marks) | Q 2 | Page 63

Classify nutrients according to their sources.

Short Question Answer (Carrying 2 Marks) | Q 3 | Page 63

How plants get nutrients ?

Short Question Answer (Carrying 2 Marks) | Q 4 | Page 63

Name three most important nutrients required for plant growth.

Short Question Answer (Carrying 2 Marks) | Q 5 | Page 63

Choose plant’s micronutrients and macronutrients from the following Iron, Chlorine, Sulphur, Copper, Nitrogen, Calcium, Manganese, Potassium, Zinc, Magnesium, Molybdenum, Phosphorus.

Short Question Answer (Carrying 2 Marks) | Q 6 | Page 63

 What are advantages of using manure ?

Short Question Answer (Carrying 2 Marks) | Q 7 | Page 63

Give two limitations of using manure.

Short Question Answer (Carrying 2 Marks) | Q 8 | Page 63

Compare the use of manures and fertilizers in maintaining soil fertility.

Short Question Answer (Carrying 2 Marks) | Q 9 | Page 63

Write down two advantages of fertilizer over manure

Short Question Answer (Carrying 2 Marks) | Q 10 | Page 63

During the downpour in a village, the rain water carried away excess of nitrogenous and other compounds present in the soil to a pond. How will they affect the growth of algae and phytoplankton in the pond ?

Short Question Answer (Carrying 2 Marks) | Q 11 | Page 63

Explain the term eutrophication with suitable example

Short Question Answer (Carrying 2 Marks) | Q 12 | Page 63

How does chemical nature of the soil change due to continued use of chemical fertilizers ?

Short Question Answer (Carrying 2 Marks) | Q 13 | Page 63

Explain various methods of fertilizer application

Short Question Answer (Carrying 2 Marks) | Q 14 | Page 63

Distinguish between farmyard manure and compost manure.

Short Question Answer (Carrying 2 Marks) | Q 15 | Page 63

Define manure. What are different manures and how do they affect the soil ?

Short Question Answer (Carrying 2 Marks) | Q 16 | Page 63

What is green manuring ? Give suitable examples for green manures.

Short Question Answer (Carrying 2 Marks) | Q 17 | Page 63

What are fertilizers ? Classify fertilizers.

Short Question Answer (Carrying 2 Marks) | Q 18 | Page 63

Give a short account of biofertilizers.

Short Question Answer (Carrying 2 Marks) | Q 19 | Page 63

Explain why a legume crop does not require nitrogenous fertilizers ?

Short Question Answer (Carrying 2 Marks) | Q 20 | Page 63

Why is irrigation essential ?

Short Question Answer (Carrying 2 Marks) | Q 21 | Page 63

How does excessive irrigation lead to soil salinity ?

Short Question Answer (Carrying 2 Marks) | Q 22 | Page 63

Mention three effects of excessive irrigation.

Short Question Answer (Carrying 2 Marks) | Q 23 | Page 63

Why water should be used judiciously ?

Short Question Answer (Carrying 2 Marks) | Q 24 | Page 63

Explain advantages of irrigation.

Short Question Answer (Carrying 2 Marks) | Q 25 | Page 63

Explain, how efficiency of irrigation can be increased.

Short Question Answer (Carrying 2 Marks) | Q 26 | Page 63

Explain the various factors which are responsible for the loss of stored food grains.

Short Question Answer (Carrying 2 Marks) | Q 27 | Page 63

Explain the various preventive measures which are taken before storing the food grains.

Short Question Answer (Carrying 2 Marks) | Q 28 | Page 63

Describe how drying of food grains is done.

Short Question Answer (Carrying 2 Marks) | Q 29 | Page 63

Write down three unique characteristics of storage structure.

Short Question Answer (Carrying 2 Marks) | Q 30 | Page 63

Describe the various methods of controlling pests attacking stored grains.

Short Question Answer (Carrying 2 Marks) | Q 31 | Page 63

As an incharge of a grain store, how will you find out the presence of pests ?

Short Question Answer (Carrying 2 Marks) | Q 32 | Page 63

How does fumigation differ from spraying ?

Short Question Answer (Carrying 2 Marks) | Q 33 | Page 63

'Milk is a very nutritious food'. Use the table given in the book to justify statement.

Short Question Answer (Carrying 2 Marks) | Q 34 | Page 63

Name four animals which provide us food.

Short Question Answer (Carrying 2 Marks) | Q 35 | Page 63

Write down the names of animal products which are used as food.

Short Question Answer (Carrying 2 Marks) | Q 36 | Page 63

How does roughage differ from concentrates with reference to cattle feed ?

Short Question Answer (Carrying 2 Marks) | Q 37 | Page 63

Give an example of average daily feed of a cow.

Short Question Answer (Carrying 2 Marks) | Q 38 | Page 63

What are the sources of "concentrates" given in a cattle feed?

Short Question Answer (Carrying 2 Marks) | Q 39 | Page 63

Write down four main characteristics of good cattle shelter.

Short Question Answer (Carrying 2 Marks) | Q 40 | Page 64

Which method will you suggest for improving the cattle breed and why?

Short Question Answer (Carrying 2 Marks) | Q 41 | Page 64

Write short notes on:

(a) General utility breeds of cow

(b) Breeds of buffalo.

Short Question Answer (Carrying 2 Marks) | Q 42 | Page 64

Mention four steps involved in artificial insemination.

Short Question Answer (Carrying 2 Marks) | Q 43 | Page 64

Define artificial insemination. Write down two advantages of it.

Short Question Answer (Carrying 2 Marks) | Q 44 | Page 64

Write down four symptoms of sick animals.

Short Question Answer (Carrying 2 Marks) | Q 45 | Page 64

Write the characteristic symptoms of :

(a) Mastitis

(b) Foot-and-mouth-disease

Short Question Answer (Carrying 2 Marks) | Q 46 | Page 64

How are high yielding breeds of poultry advantageous over indigenous breeds?

Short Question Answer (Carrying 2 Marks) | Q 47 | Page 64

Mention four advantages of fishery.

Short Question Answer (Carrying 2 Marks) | Q 48 | Page 64

Write a short note on 'Prevention of poultry diseases'?

Short Question Answer (Carrying 2 Marks) | Q 49 | Page 64

Write advantages of bee keeping.

Short Question Answer (Carrying 2 Marks) | Q 50 | Page 64

What are the advantages of composite fish culture?

Chapter 1: Improvements In Food Resources Exercise Short Question Answer ( Carrying 3 Marks) solutions [Page 64]

Short Question Answer ( Carrying 3 Marks) | Q 1 | Page 64

Write notes on plants and animals as sources of food.

Short Question Answer ( Carrying 3 Marks) | Q 2 | Page 64

Define green revolution, what are the common objectives of crop improvement?

Short Question Answer ( Carrying 3 Marks) | Q 3 | Page 64

What we do get from cereals, pulses, fruits and vegetables?

Short Question Answer ( Carrying 3 Marks) | Q 4 | Page 64

Explain the objectives of mixed cropping. How are crops selected for mixed cropping.

Short Question Answer ( Carrying 3 Marks) | Q 5 | Page 64

Distinguish between mixed cropping and intercropping.

Short Question Answer ( Carrying 3 Marks) | Q 6 | Page 64

Explain the advantages and disadvantages of mixed cropping.

Short Question Answer ( Carrying 3 Marks) | Q 7 | Page 64

Define intercropping. How does it differ with mixed cropping?

Short Question Answer ( Carrying 3 Marks) | Q 8 | Page 64

Write down disadvantages of crop rotation.

Short Question Answer ( Carrying 3 Marks) | Q 9 | Page 64

Write about three main criteria which should be considered while selecting the crops for rotation?

Short Question Answer ( Carrying 3 Marks) | Q 10 | Page 64

Why are leguminous crops desirable in crop rotation?

Short Question Answer ( Carrying 3 Marks) | Q 11 | Page 64

Explain various steps in hybridization of crop plants.

Short Question Answer ( Carrying 3 Marks) | Q 12 | Page 64

Define plant breeding? Describe the various methods of plant breeding.

Short Question Answer ( Carrying 3 Marks) | Q 13 | Page 64

Describe the biological method of weed control.

Short Question Answer ( Carrying 3 Marks) | Q 14 | Page 64

Classify plant diseases depending upon their occurrence and transmission.

Short Question Answer ( Carrying 3 Marks) | Q 15 | Page 64

Mention three different ways in which insect pests can attack the crop plant.

Short Question Answer ( Carrying 3 Marks) | Q 16 | Page 64

Explain the methods of controlling insect pests.

Short Question Answer ( Carrying 3 Marks) | Q 17 | Page 64

Give two examples each of

(a) Narrow leaved rabi season weed.

(b) Broad leaved kharif season weed.

Short Question Answer ( Carrying 3 Marks) | Q 18 | Page 64

Explain various methods of weed control.

Short Question Answer ( Carrying 3 Marks) | Q 19 | Page 64

Explain various effects of weeds on crop plants.

Short Question Answer ( Carrying 3 Marks) | Q 20 | Page 64

What are crop's pests? Suggest preventive measures to control pests.

Short Question Answer ( Carrying 3 Marks) | Q 21 | Page 64

What is the advantage of using insect resistant varieties?

Chapter 1: Improvements In Food Resources Exercise Long Answer Questions (Carrying 5 marks each) solutions [Pages 64 - 65]

Long Answer Questions (Carrying 5 marks each) | Q 1 | Page 64

Distinguish between fertilizer and manure. Give suitable examples. What are advantages and disadvantages of using fertilizer?

Long Answer Questions (Carrying 5 marks each) | Q 2 | Page 64

Explain the mechanism of compost formation.

Long Answer Questions (Carrying 5 marks each) | Q 3 | Page 64

Explain what will happen if in a cultivated field only manures are supplied and in another field only fertilizers are supplied, keeping all other conditions similar.

Long Answer Questions (Carrying 5 marks each) | Q 4 | Page 64

Define irrigation. Why is irrigation of crops essential? Mention the harmful effects of excessive irrigation.

Long Answer Questions (Carrying 5 marks each) | Q 5 | Page 64

Explain various types of irrigation systems in India. How can efficiency of applied water be increased in agriculture.

Long Answer Questions (Carrying 5 marks each) | Q 6 | Page 64

Compare between mixed cropping and intercropping. Write down from advantage of both of these techniques.

Long Answer Questions (Carrying 5 marks each) | Q 7 | Page 64

Explain the various methods of crop improvement. Name one improved variety of Rice, Maize, Soyabean, Sunflower and Mustard.

Long Answer Questions (Carrying 5 marks each) | Q 8 | Page 64

Discuss the various methods which are used to control plant diseases.

Long Answer Questions (Carrying 5 marks each) | Q 9 | Page 64

Explain the various preventive measures against insect pests.

Long Answer Questions (Carrying 5 marks each) | Q 10 | Page 64

What is feed? What are different type of feed? How is it differ with respect to age and functions?

Long Answer Questions (Carrying 5 marks each) | Q 11 | Page 65

What is artificial insemination? Describe this technique.

Long Answer Questions (Carrying 5 marks each) | Q 13 | Page 65

Write a short note on prevention of animal diseases.

Long Answer Questions (Carrying 5 marks each) | Q 13 | Page 65

How bee colony works? What values can be seen in the organisation of bee colony?

Long Answer Questions (Carrying 5 marks each) | Q 14 | Page 65

Write down the desirable characters of bee variety suitable for bee keeping.

Long Answer Questions (Carrying 5 marks each) | Q 15 | Page 65

What is pasturage and how it is related to honey production?

Long Answer Questions (Carrying 5 marks each) | Q 16 | Page 65

For increasing production, what is common in poultry, fisheries and bee-keeping?

Long Answer Questions (Carrying 5 marks each) | Q 17 | Page 65

How do you differentiate between capture fisheries, inland fisheries and aquaculture?

Long Answer Questions (Carrying 5 marks each) | Q 18 | Page 65

Explain the role of workers in a been colony.

Chapter 1: Improvements In Food Resources

Short Question Answer (Carrying 2 Marks)Short Question Answer ( Carrying 3 Marks)Long Answer Questions (Carrying 5 marks each)

P S Verma and V K Agarwal Class 9 Biology - Science Part 3

Class 9 Biology - Science Part 3 - Shaalaa.com

P S Verma and V K Agarwal solutions for Class 9 Science chapter 1 - Improvements In Food Resources

P S Verma and V K Agarwal solutions for Class 9 Science chapter 1 (Improvements In Food Resources) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Class 9 Biology - Science Part 3 solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Class 9 Science chapter 1 Improvements In Food Resources are Introduction Improvements in Food Resources, Animal Husbandry - Bee Keeping, Animal Husbandry - Fish Production, Animal Husbandry - Poultry Farming, Animal Husbandry - Cattle Farming, Crop Protection Management, Crop Production Management - Cropping Patterns, Crop Production Management - Irrigation, Crop Production Management - Nutrient Management, Improvement in Crop Yields - Crop Variety Improvement.

Using P S Verma and V K Agarwal Class 9 solutions Improvements In Food Resources exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in P S Verma and V K Agarwal Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 9 prefer P S Verma and V K Agarwal Textbook Solutions to score more in exam.

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