force and laws of motion
CBSE TEST PAPER-02
CLASS - IX BIOLOGY (Improvement in food Resources)
1.
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)
(d) All the above.
2.
‘Operation Flood’ in India refers to –
(a) Controlling floods during rainy season.
(b) Increase in milk production by development of co-operative dairy on a large scale.
(c)Increase in fish production during floods.
(d) Large increase in egg production.
3.
Find out the correct sentences.
(i) Hybridisation means crossing between genetically dissimilar plants.
(ii) Cross between two varieties is called as inter-specific hybridization.
(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 hybridization.
(a) (i) and (iii)
4.
(b) (ii) and (iv)
(c) (ii) and (iii)
[1]
[1]
(d) (iii) and (iv)
Which one of the following fishes is a surface feeder?
(a) Rohu
(b) Mrigal
(c) Common carp
[1]
(d) catla
5.
What is an layer and a broiler? What are the differences between the two?
[2]
6.
Arrange the following 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 soil
(d) After decomposition it becomes green manure.
[2]
7.
What are the benefits of poultry farming over cattle farming?
[2]
8.
Define niter – cropping Mention its advantages.
[2]
9.
What are the advantages of bee-keeping?
[3]
10. Differentiate between capture fishing, aquaculture and mariculture.
[3]
11. List the steps to be taken to prevent and control diseases in animals.
[3]
12. Give difference between manures and fertilizers.
[3]
13. What is genetic manipulation?
CLASS - IX BIOLOGY (Improvement in food Resources)
1.
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)
(d) All the above.
2.
‘Operation Flood’ in India refers to –
(a) Controlling floods during rainy season.
(b) Increase in milk production by development of co-operative dairy on a large scale.
(c)Increase in fish production during floods.
(d) Large increase in egg production.
3.
Find out the correct sentences.
(i) Hybridisation means crossing between genetically dissimilar plants.
(ii) Cross between two varieties is called as inter-specific hybridization.
(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 hybridization.
(a) (i) and (iii)
4.
(b) (ii) and (iv)
(c) (ii) and (iii)
[1]
[1]
(d) (iii) and (iv)
Which one of the following fishes is a surface feeder?
(a) Rohu
(b) Mrigal
(c) Common carp
[1]
(d) catla
5.
What is an layer and a broiler? What are the differences between the two?
[2]
6.
Arrange the following 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 soil
(d) After decomposition it becomes green manure.
[2]
7.
What are the benefits of poultry farming over cattle farming?
[2]
8.
Define niter – cropping Mention its advantages.
[2]
9.
What are the advantages of bee-keeping?
[3]
10. Differentiate between capture fishing, aquaculture and mariculture.
[3]
11. List the steps to be taken to prevent and control diseases in animals.
[3]
12. Give difference between manures and fertilizers.
[3]
13. What is genetic manipulation?