Q1Multiple choice
Which one is an oil yielding plant among the following?
- (a)Lentil
- (b)Sunflower
- (c)Cauliflower
- (d)Hibiscus
Show answer
(b) Sunflower
Chapter 15 – Improvement In Food Resources
Class 9 Science · 49 questions · 49 with answers
Questions
Q2Multiple choice
Which one is not a source of carbohydrate?
- (a)Rice
- (b)Millets
- (c)Sorghum
- (d)Gram
Show answer
(d) Gram
Q3Multiple choice
Find out the wrong statement from the following
- (a)White revolution is meant for increase in milk production
- (b)Blue revolution is meant for increase in fish production
- (c)Increasing food production without compromising with environmental quality is called as sustainable agriculture
- (d)None of the above
Show answer
(d) None of the above
Q4Multiple choice
To solve the food problem of the country, which among the following is necessary?
- (a)Increased production and storage of food grains
- (b)Easy access of people to the food grain
- (c)People should have money to purchase the grains
- (d)All of the above 16-04-2018
Show answer
(d) All of the above 16-04-2018
Q5Multiple choice
Find out the correct sentence (i) Hybridisation means crossing between genetically dissimilar plants (ii) Cross between two varieties is called as inter specific hybridisation (iii) Introducing genes of desired character into a plant gives genetically modified crop (iv) Cross between plants of two species is called as inter varietal hybridisation
- (a)(i) and (iii)
- (b)(ii) and (iv)
- (c)(ii) and (iii)
- (d)(iii) and (iv)
Show answer
(a) (i) and (iii)
Q6Multiple choice
Weeds affect the crop plants by
- (a)killing of plants in field before they grow
- (b)dominating the plants to grow
- (c)competing for various resources of crops (plants) causing low availability of nutrients
- (d)all of the above.
Show answer
(c) competing for various resources of crops (plants) causing low availability of nutrients
Q7Multiple choice
Which one of the following species of honey bee is an Italian species?
- (a)Apis dorsata
- (b)Apis florae
- (c)Apis cerana indica
- (d)Apis mellifera
Show answer
(d) Apis mellifera
Q8Multiple choice
Find out the correct sentence about manure (i) Manure contains large quantities of organic matter and small quantities of nutrients. (ii) It increases the water holding capacity of sandy soil. (iii) It helps in draining out of excess of water from clayey soil. (iv) Its excessive use pollutes environment because it is made of animal excretory waste.
- (a)(i) and (iii)
- (b)(i) and (ii)
- (c)(ii) and (iii)
- (d)(iii) and (iv) 16-04-2018
Show answer
(b) (i) and (ii)
Q9Multiple choice
Cattle husbandry is done for the following purposes (i) Milk Production (ii) Agricultural work (iii) Meat production (iv) Egg production
- (a)(i), (ii) and (iii)
- (b)(ii), (iii) and (iv)
- (c)(iii) and (iv)
- (d)(i) and (iv)
Show answer
(a) (i), (ii) and (iii)
Q10Multiple choice
Which of the following are Indian cattle? (i) Bos indicus (ii) Bos domestica (iii) Bos bubalis (iv) Bos vulgaris
- (a)(i) and (iii)
- (b)(i) and (ii)
- (c)(ii) and (iii)
- (d)(iii) and (iv)
Show answer
(a) (i) and (iii)
Q11Multiple choice
Which of the following are exotic breeds? (i) Brawn (ii) Jersey (iii) Brown Swiss (iv) Jersey Swiss
- (a)(i) and (iii)
- (b)(ii) and (iii)
- (c)(i) and (iv)
- (d)(ii) and (iv)
Show answer
(b) (ii) and (iii)
Q12Multiple choice
Poultry farming is undertaken to raise following (i) Egg production (ii) Feather production (iii) Chicken meat (iv) Milk production IMPROVEMENT IN FOOD RESOURCES 87 16-04-2018
- (a)(i) and (iii)
- (b)(i) and (ii)
- (c)(ii) and (iii)
- (d)(iii) and (iv)
Show answer
(a) (i) and (iii)
Q13Multiple choice
Poultry fowl are susceptible to the following pathogens
- (a)Viruses
- (b)Bacteria
- (c)Fungi
- (d)All of the above
Show answer
(d) All of the above
Q14Multiple choice
Which one of the following fishes is a surface feeder?
- (a)Rohus
- (b)Mrigals
- (c)Common carps
- (d)Catlas
Show answer
(d) Catlas
Q15Multiple choice
Animal husbandry is the scientific management of (i) animal breeding (ii) culture of animals (iii) animal livestock (iv) rearing of animals
- (a)(i), (ii) and (iii)
- (b)(ii), (iii) and (iv)
- (c)(i), (ii) and (iv)
- (d)(i), (iii) and (iv)
Show answer
(d) (i), (iii) and (iv)
Q16Multiple choice
Which one of the following nutrients is not available in fertilizers?
- (a)Nitrogen
- (b)Phosphorus
- (c)Iron
- (d)Potassium
Show answer
(c) Iron
Q17Multiple choice
Preventive and control measures adopted for the storage of grains include
- (a)strict cleaning
- (b)proper disjoining
- (c)fumigation
- (d)all of the above 16-04-2018
Show answer
(d) all of the above 16-04-2018
Q18Multiple choice
Match the column A with the column B (A) (B) (a) Catla
- (i)Bottom feeders (b) Rohu
- (ii)Surface feeders (c) Mrigal
- (iii)Middle-zone feeders (d) Fish farming
- (iv)Culture fishery
Show answer
(i) Bottom feeders (b) Rohu
(ii) Surface feeders (c) Mrigal
(iii) Middle-zone feeders (d) Fish farming
(iv) Culture fishery
Q19Multiple choice
Fill in the blanks
- (a)Pigeon pea is a good source of ———.
- (b)Berseem is an important———crop.
- (c)The crops which are grown in rainy season are called———crops.
- (d)———are rich in vitamins. (f) ——— crop grows in winter season.
Show answer
(a) Pigeon pea is a good source of ———.
(b) Berseem is an important———crop.
(c) The crops which are grown in rainy season are called———crops.
(d) ———are rich in vitamins. (f) ——— crop grows in winter season.
Q20Short answer
What is a GM crop? Name any one such crop which is grown in India.
Show answer
Crop which has been developed by introducing a new gene from any other source, to obtain the desired character, is called as genetically modified (GM) crop. Bt Cotton is an example of GM crop which is made insect- resistant by introducing a new gene from a bacteria.
Q21Short answer
List out some useful traits in improved crop?
Show answer
Useful traits of improved crops are (a) higher yield (b) improved nutritional quality (c) resistance to biotic and abiotic stresses (d) change in maturity (e) wide range of adaptability (f) desired agronomic characteristics.
Q22Short answer
Why is organic matter important for crop production?
Show answer
Organic matter is important for crops because (a) it helps in improving soil structure. (b) it helps in increasing water holding capacity of sandy soil. (c) in clayey soil large quantity of organic matter helps in drainage and in avoiding water logging.
Q23Short answer
Why is excess use of fertilizers detrimental for environment?
Show answer
Hint— Excess use of fertilizers causes environmental pollution as their residual and unused amounts will become pollutants for air, water and soil.
Q24Multiple choice
Give one word for the following
- (a)Farming without the use of chemicals as fertilizers, herbicides and pesticides is known as ———.
- (b)Growing of wheat and groundnut on the same field is called as ———.
- (c)Planting soyabean and maize in alternate rows in the same field is called as ———.
- (d)Growing different crops on a piece of land in pre-planned succession is known as———. (e) Xanthium and Parthenium are commonly known as———. (f) Causal organism of any disease is called as ———.
Show answer
(a) Farming without the use of chemicals as fertilizers, herbicides and pesticides is known as ———.
(b) Growing of wheat and groundnut on the same field is called as ———.
(c) Planting soyabean and maize in alternate rows in the same field is called as ———.
(d) Growing different crops on a piece of land in pre-planned succession is known as———. (e) Xanthium and Parthenium are commonly known as———. (f) Causal organism of any disease is called as ———.
Q25Multiple choice
Match the following A and B (A) (B) (a) Cattle used for tilling and carting
- (i)Milk producing female (b) Indian breed of chicken
- (ii)Broiler (c) Sahiwal, Red Sindhi
- (iii)Drought animals (d) Milch
- (iv)Local breed of cattle (e) Chicken better fed for obtaining (v) Aseel meat IMPROVEMENT IN FOOD RESOURCES 89 16-04-2018
Show answer
(i) Milk producing female (b) Indian breed of chicken
(iii) Drought animals (d) Milch
(ii) Broiler (c) Sahiwal, Red Sindhi
(iv) Local breed of cattle (e) Chicken better fed for obtaining (v) Aseel meat IMPROVEMENT IN FOOD RESOURCES 89 16-04-2018
Q26Short answer
If there is low rainfall in a village throughout the year, what measures will you suggest to the farmers for better cropping?
Show answer
Farmers of low rainfall area will be suggested to (a) practice farming with drought resistant and early maturing varieties of crops. (b) to enrich the soil with more humus content as it increases the water- holding capacity and retains water for longer duration.
Q27Short answer
Group the following and tabulate them as energy yielding, protein yielding, oil yielding and fodder crop. Wheat, rice, berseem, maize, gram, oat, pigeon gram, sudan grass, lentil, soyabean, groundnut, castor and mustard.
Show answer
(1) Energy yielding— wheat, rice, maize (2) Protein yielding— gram, pigeon gram, lentil, soybean (3) Oil yielding— groundnut, castor, mustard, soybean (4) Fodder crops— barseem, oat, sudan grass
Q28Short answer
Define the term hybridization and photoperiod.
Show answer
Hybridisation— Hybridisation refers to crossing between genetically dissimilar organisms. Photoperiod— Duration of sunlight available to the plant is called as photoperiod. It affects the growth, flowering and maturation of crops.
Q29Multiple choice
Fill in the blanks
- (a)Photoperiod affect the————.
- (b)Kharif crops are cultivated from————to————.
- (c)Rabi crops are cultivated from————to————.
- (d)Paddy, maize, green gram and black gram are————crops. (e) Wheat, gram, pea, mustard are————crops.
Show answer
(a) Photoperiod affect the————.
(b) Kharif crops are cultivated from————to————.
(c) Rabi crops are cultivated from————to————.
(d) Paddy, maize, green gram and black gram are————crops. (e) Wheat, gram, pea, mustard are————crops.
Q30Short answer
Cultivation practices and crop yield are related to environmental condition. Explain.
Show answer
Different crops and cultivation practices require different climatic conditions, temperature, photoperiod for their growth and completion of life cycle. There are some crops which are grown in rainy season (Kharif crops) while some others are grown during winter season (Rabi crops).
Q31Multiple choice
Fill in the blanks
- (a)A total of———nutrients are essential to plants.
- (b)———and———are supplied by air to plants.
- (c)———is supplied by water to plants.
- (d)Soil supply———nutrients to plants. (e) ———nutrients are required in large quantity and called as———. (f) ——— nutrients are needed in small quantity for plants and are called ———.
Show answer
(a) A total of———nutrients are essential to plants.
(b) ———and———are supplied by air to plants.
(c) ———is supplied by water to plants.
(d) Soil supply———nutrients to plants. (e) ———nutrients are required in large quantity and called as———. (f) ——— nutrients are needed in small quantity for plants and are called ———.
Q32Short answer
Differentiate between compost and vermicompost?
Show answer
Compost— Compost formation is the process in which farm waste materials like livestock excreta, vegetable wastes, animal refuse, domestic waste, straw, eradicated weeds are decomposed and used as manure. Vermicompost— The compost prepared from organic matter by using earthworm which hastens the process of decomposition.
Q33Multiple choice
Arrange these statements in correct sequence of preparation of green manure.
- (a)Green plants are decomposed in soil.
- (b)Green plants are cultivated for preparing manure or crop plant parts are used.
- (c)Plants are ploughed and mixed into the soil.
- (d)After decomposition it becomes green manure.
Show answer
(b) Green plants are cultivated for preparing manure or crop plant parts are used.
(c) Plants are ploughed and mixed into the soil.
(a) Green plants are decomposed in soil.
(d) After decomposition it becomes green manure.
Q34Short answer
An Italian bee variety A. mellifera has been introduced in India for honey production. Write about its merits over other varieties.
Show answer
Merits of Italian bee variety A. mellifera are— (a) It stings less. (b) It has high honey collection capacity. (c) It stays in given bee-hive for long periods and breeds very well.
Q35Short answer
In agricultural practices, higher input gives higher yield. Discuss how? 16-04-2018
Show answer
In agricultural practices, higher input gives higher yield. This means higher money input to raise the yield. Financial conditions of the farmers allows them to take up different farming practices and technologies. The farmer’s purchasing capacity for input decides cropping system and production practices. Long Answer Questions
Q36Long answer
Discuss the role of hybridisation in crop improvement.
Show answer
Hybridisation refers to crossing between genetically dissimilar plants. It may be inter varietel, inter specific and inter generic. Two crops of good characters (desired character) are selected and crossed to obtain a new crop having desired characters of parental crops. This method of hybridisation improves crops with respect to yield, disease resistance, pest resistance etc.
Q37Multiple choice
Define
- (i)Vermicompost
- (ii)Green manure
- (iii)Bio fertilizer
Show answer
(i) Vermicompost
(ii) Green manure
(iii) Bio fertilizer
Q38Long answer
Discuss various methods for weed control.
Show answer
Various modes of weed control are (a) mechanical removal (b) proper seed bed preparation to avoid the weed growth (c) timely sowing of crop to avoid the growth of weed. (d) intercropping and crop rotation also help in weed control.
Q39Multiple choice
Differentiate between the following
- (i)Capture fishery and Culture fishery
- (ii)Mixed cropping and Inter cropping
- (iii)Bee keeping and Poultry farming
Show answer
(i) Capture fishery and Culture fishery
(ii) Mixed cropping and Inter cropping
(iii) Bee keeping and Poultry farming
Q40Long answer
Give the merits and demerits of fish culture?
Show answer
Hint— Demerits (i) threat to bio-diversity (ii) only economically important and valued fishes will be cultured. Merits (i) large amount of desired fishes can be obtained in small area (ii) improvement can be done.
Q41Long answer
What do you understand by composite fish culture?
Show answer
Composite fish culture is the method to culture five or six species, both indegenous and exotic, together in a single fish pond. These species are selected so that they do not compete for food among themselves having different types of food habits. As a result food available in all the parts of the pond is used. For example— Catlas are surface feeders, Rohu is middle zone feeder and Mrigals and common carps are bottom feeders.
Q42Long answer
Why bee keeping should be done in good pasturage?
Show answer
Because good pasturage provides more quantity and quality of nectar for honey to honey bees.
Q43Long answer
Write the modes by which insects affect the crop yield.
Show answer
Hint—Cutting plant parts, sucking cell sap, borers.
Q44Long answer
Discuss why pesticides are used in very accurate concentration and in very appropriate manner?
Show answer
Pesticides are used in very accurate concentration and in a very appropriate manner, because if used in excess it (a) harms the soil and causes loss of fertility (b) checks the replenishment of organic matter (c) kills the micro organism of soil (d) causes air, water and soil pollution.
Q45Long answer
Name two types of animal feed and write their functions.
Show answer
Hint— (i) Roughage is largely fibre. (ii) Concentrates are rich in proteins and nutrients.
Q46Long answer
What would happen if poultry birds are larger in size and have no summer adaptation capacity? In order to get small sized poultry birds, having summer adaptability, what method will be employed?
Show answer
Maintenance of temperature is needed for better egg production by poultry birds. Therefore, larger size (increase in surface area of body) and no adaptability of summer may cause decline in egg production. To obtain the smaller size and higher summer adaptability, cross breeding of poultry birds are done. Small size is also needed for better housing and low feed.
Q47Long answer
Suggest some preventive measures for the diseases of poultry birds.
Show answer
Some preventive measures of poultry bird diseases are (a) cleaning of poultry farms (b) proper sanitation of poultry farms (c) spraying of disinfectants at regular intervals (d) appropriate vaccination of birds.
Q48Multiple choice
Figure15.1 shows the two crop fields [Plots A and B] have been treated by manures and chemical fertilizers respectively, keeping other environmental factors same. Observe the graph and answer the following questions.
This question refers to a figure in the original PDF.
- (i)Why does plot B show sudden increase and then gradual decrease in yield?
- (ii)Why is the highest peak in plot A graph slightly delayed? (ii) What is the reason for the different pattern of the two graphs? Fig. 15.1 IMPROVEMENT IN FOOD RESOURCES 91 16-04-2018
Show answer
(i) Why does plot B show sudden increase and then gradual decrease in yield?
(ii) Why is the highest peak in plot A graph slightly delayed? (ii) What is the reason for the different pattern of the two graphs? Fig. 15.1 IMPROVEMENT IN FOOD RESOURCES 91 16-04-2018
Hint: Hint: importance of organic matter can be included
Q49Long answer
Complete the crossword puzzle (Fig.15.2) Fig. 15.2 Across 1. Oil yielding plant (9) 3. Crop grown in winter season (4) 5. Fixed by Rhizobium (8) 9. Common honey bee (4) Downward 2. Animal feed (6) 4. A micronutrient (5) 6. Unwanted plant in crop fields (4) 7. An exotic breed of chicken(7) 8. Bottom feeders in fish pond(7) 10. A marine fish (4) 16-04-2018
This question refers to a figure in the original PDF.
Show answer
Crossword.