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Improvement in Food Resources : NCERT Exemplar


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Multiple Choice Questions : -

Q.1 Which one is an oil yielding plant among the following?

(a) Lentil

(b) Sunflower

(c) Cauliflower

(d) Hibiscus

Sol. (b)


Q.2 Which one is not a source of carbohydrate?

(a) Rice

(b) Millets

(c) Sorghum

(d) Gram

Sol.  (d)


Q.3 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

Sol. (d)


Q.4 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

Sol. (d)


Q.5 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)

Sol. (a)


Q.6 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.

Sol. (c)


Q.7 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

Sol. (d)


Q.8 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)

Sol. (b)


Q.9 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)

Sol. (a)


Q.10 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)

Sol.  (a)


Q.11 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)

Sol. (b)


Q.12 Poultry farming is undertaken to raise following

(i) Egg production

(ii) Feather production

(iii) Chicken meat

(iv) Milk production

(a) (i) and (iii)

(b) (i) and (ii)

(c) (ii) and (iii)

(d) (iii) and (iv)

Sol.  (a)


Q.13  Poultry fowl are susceptible to the following pathogens

(a) Viruses

(b) Bacteria

(c)  Fungi

(d)  All of the above

Sol.  (d)


Q.14  Which one of the following fishes is a surface feeder?

(a) Rohus

(b)  Mrigals

(c)  Common carps

(d)  Catlas

Sol. (d)


Q.15 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)

Sol. (d)


Q. 16 Which one of the following nutrients is not available in fertilizers?

(a) Nitrogen

(b) Phosphorus

(c) Iron

(d) Potassium

Sol.  (c)


Q.17 Preventive and control measures adopted for the storage of grains include

(a) strict cleaning

(b) proper disjoining

(c) fumigation

(d)  all of the above

Sol.  (d)


Q. 18 Match the column A with the column B

Column (A)                           Column (B)

(a) Catla                                 (i) Middle-zone feeders

(b) Rohu                                 (ii) Bottom feeders

(c) Mrigal                               (iii) Surface feeders

(d)  Fish farming                   (iv)  Culture fishery

Sol. (a) – (ii) , (b) – (iii) , (c) - (i)  (d) - (iv)


Q.19 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.

Sol. (a) Protein

(b) Fodder

(c) Kharif

(d) Vegetable

(e) Rabi


Q.20 What is a GM crop? Name any one such crop which is grown in India.

GM crops are the crops which have been developed by the introduction of a new gene with a desired trait from a bacterium, with the help of a vector to modify/improve the crop’s original characters. These are well known as genetically modified crops.

E.g.: BT cotton which is a GM crop was developed insect resistant by the introduction of a new gene


Q.21 List out some useful traits in improved crop?

Following are the few traits observed in improved crops:-

1. Yield is improved to a high level.

2. Resistance developed from biotic and abiotic stresses.

3. Disease resistance is developed.

4. Enhanced nutritional qualities.

5. Adaptabilities were improved in the crop.

6. Desired agronomic characteristics were developed e.g. improved shelf life, more pulpiness, seed less, etc.


Q.22 Why is organic matter important for crop production?

The importance of organic matter for crop production are as follows:-

1. Soil fertility will be improved.

2. It enhances soil structure and porosity in soil.

3. It also helps in improving water holding capabilities in sand cultivation.

4. Organic matter also helps in improving drainage.

5. Water logging problems in clay soil will also be improved.


Q.23 Why is excess use of fertilizers detrimental for environment?

Excess use of fertilizers is detrimental for environment because when used in excess quantities, the residual and unused part is left behind. This can result in the development of pollution by contaminating water, air, and soil present in the surrounding.


Q.24 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 _____________.

(a)  Farming

(b)  Mixed Cropping

(c)  Inter  Cropping

(d) Crop Rotation

(e)  Weeds

(f)  Pathogen


Q.25 Match the following A and B

              Column (A)                                                   Column (B)

(a) Cattle used for tilling and carting                  (i) Local breed of cattle  Animals

(b) Indian breed of chicken                                   (ii) Broiler

(c) Sahiwal, Red Sindhi                                         (iii) Milk producing female

(d) Milch                                                                  (iv) Drought

(e) Chicken better fed for obtaining meat          (v) Aseel

(a) – (iii) , (b)  - (v) , (c) – (iv) , (d) – (i) ; (e) – (ii)


Q.26 If there is low rainfall in a village throughout the year, what measures will you  suggest to the farmers for better cropping?

The village needs to take necessary measures responsible for water conservation. Following are some suggestions which could be helpful:-

1. Use of organic manure and humus increases the water holding capacity of soil for longer time period.

2. Cultivating drought resistant and early maturing crops.

3. Constructing short canals from rivers.

4. Building rain water storage tanks.


Q.27 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.

•  Energy yielding – wheat, rice, maize

•  Protein yielding – gram, pigeon, lentil, soybean

•  Oil yielding- groundnut, castor, mustard, soybean

•   Fodder crops – barseem, oat, Sudan grass.


Q.28  Define the term hybridization and photoperiod.

Hybridization refers to the cross breeding of two genetically dissimilar organisms to produce a hybrid crop consisting of two different traits.

Photoperiod is the duration of sunlight which is available to the plant. This affects growth of plant, flowering, and maturation of crops.


Q.29  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.

(a)   Flowering in plants

(b)   June to October

(c)   Nov to April

(d)   Kharif

(e)   Rabi


Q.30 Cultivation practices and crop yield are related to environmental condition.

Explain.

Various crops require different conditions for cultivation such as, climate, temperature, photoperiod, etc. for their proper growth and life cycle completion. Few crops have the tendency to grow only in rainy season (Kharif), or only in winters (Rabi crops). This shows that the cultivation requirements and environmental conditions differ for all variety of crops.


Q.31 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 _______.

(a)     16

(b)    Carbon; Oxygen

 (c)   Hydrogen

 (d)   13

 (e)   6; Macronutrients

 (f)    Macronutrients        


Q.32 Differentiate between compost and vermicompost?

Compost formation is the process by which decomposition of the organic wastes (like livestock excretions, vegetable wastes, animal wastes, domestic wastes, eradicated weeds, straws etc.) takes place to produce manures which are beneficial for crops.

Vermi-compost is the degradation of organic matter present in waste to produce manures with the help of earthworms.


Q.33 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.

Sol.   b-c-a-d


Q.34 An Italian bee variety A. mellifera has been introduced in India for honey production. Write about its merits over other varieties.

The merits of Italian bee variety (A. mellifera) are as follows:-

(a) It is basically docile and stings are absent.

(b) It has high honey yielding capacity.

(c) It has the property of homely, i.e. it stays in the bee hive only.

(d) It breeds well and has no difficulties.


Q.35 In agricultural practices, higher input gives higher yield. Discuss how?

The statement that ‘in agriculture, high input means high yield’ demonstrates that if more money is invested using good farming practices and high technology then good productive yields will be generated. The purchase of good quality seeds, effective pesticides, fertilizers and manures, allow good cropping system of productivity.



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