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Tuesday, September 30, 2014

Class IX Science Ch-07 Diversity in Living Organisms Previous year Solved Questions


Class IX  Science Ch-07 Diversity in Living Organisms  Previous year Solved Questions

How to memorize classification levels?

King Phil-nnaeus Classed Ordinary  
 Families as  Generous and Special
Kingdom Phylum Class Order  
 Family
Genus Species
1
Which group of plant is called cryptogamy? Give two example             
1
Ans
Plants group with hidden reproductive organs are called cryptogamy eg.algae, lichens, 
mosses, etc.The thallophytes, the bryophytes and the pteridophytes(any one)
2
What are the modification produced by  Car Woese, in the classification proposed by Whittaker     
1
Ans
The modification Woese divide the kingdom Monera into Archaebacteria (or
Archaea) and Eubacteria (or Bacteria)
3
Name one mammal that lay eggs     
1
Ans
The platypus and the echidna
4
Classify the following into respective Phylum/class: jellyfish; Earthworm; cockroach; Rat                      
2
Ans:
Jellyfish - Coelenterate
Cockroach - Arthropoda
Rat - Mammalian
Earthworm - Annelida
5
Select the odd one out with respect to classification giving reason for your choice          (a) Mango, Gram , rice, Apple (b)  Prawn, Scorpion, Octopus, Butterfly
2                                                                                                                                 
Ans:
(a) Rice – a monocotyledonous other are dicotyledonous
(b) Octopus which belong to Mollusca other are Arthropoda
6
(a) Give one characteristic difference between primitive and advanced organisms.
(b) Name the phylum to which the following are included.
(i) Spider (ii) Cockroach (iii) Prawn (iv) Housefly
2
Ans
Ans: (a) The activities of life are performed by a single cell in primitive organisms while 
there are different organs for performing various functions in advanced organisms.
(b) (i) Spider – Arachnida 
(ii) Cockroach – Dictyoptera 
(iii) Prawn – Arthropoda 
 (iv) Housefly – Arthropoda
7
Enlist any two characteristics which are present in animals which belong to phylum chordata.                  
2
Ans
All chordates possess the following features:
(i) have a notochord 
(ii) have a dorsal nerve cord 
(iii) are triploblastic 
(iv) have paired gill pouches
8
Write three distinguish feature of phylum Echinodarmata. Give one example.                       
3
Ans
Three distinguish feature of phylum Echinodarmata :
(i) Free-living marine animals (ii) triploblastic (ii) have a coelomic cavity
Examples are starfish and sea urchins
9
Explain, What are organ specific manifestation and tissue specific manifestations?                                  
3
Ans:
When a microbe infects the specific organ of an individual in a particular type of disease,
 it is termed as organ specific manifestation. For example, in tuberculosis the microbe infects 
the specific organ i.e. lungs of an individual. When a microbe infects the tissues of the body 
of an individual in a particular type of disease, it is termed as tissue specific manifestation. 
For example, in HIV the virus infects the tissue and cells of the organism making decreasing 
his/her immunity.
10
What are the advantage of classifying organism? (3 point)
3
Ans:
1. Classification helps in identify the living organisms easily.
2. It makes study of such a wide variety of bio-life in systematic manner.
3. Enables us understand how complex organisms evolve over the time.
4. Classification help us understand the inter-relationships among different groups.
11
Write one point difference between each , between the following                                                                        
(a) Annelids and arthropods           (b) Thallophytes and petridophytes
(c) periferan and Coelenterates
3
Ans
(a) Annelids have closed circulatory systems in which the heart pumps blood into vessels 
where as Arthropods, however, have open circulatory systems, so the blood actually pumps
 the blood into parts of the body cavity known as sinuses
(b) Thallophytes do not have well-differentiated body design  and petridophytes easily
differentiated into roots, stem and leaves (c) Porifera have very minimal body design
differentiation whre as Coelenterates show more body design differentiation.
12
write the apropriate term for                          
(a)Animals that are able to  maintain a certain body temp over a wide range of temp in the environment
(b) Plants bear naked seeds            (c) Plants which have Pseudocoelom
 3
Ans
(a) warm blooded animals- mammals and aves  (b) Gymnosperms        (c) Nematode
13
Write one point difference between each , between the following                                                                          
(a) Amphibian and Reptiles     (b) Aves and mamals  (c) Gymnosperm and angioosperm
3

Ans:
(a) Reptiles lay eggs with tough coverings and do not need to lay their eggs in water, 
unlike amphibians.
(b) Aves are warm-blooded animals and have a four-chambered heart. They lay eggs.
 Whereas mamals are warm-blooded animals and have a four-chambered heart. They 
have mammary gland and give birth to child.
(c) Gymnosperm bear naked seeds where as angioosperm bear seeds inside fruit
14
Why is there a need for systematic naming of living organisms?
3
Ans
The scientific name for an organism is essential to identify living organisms anywhere 
in the world.
15
Write three convention that are followed while writing scientific names of the species
3
Ans
The system of scientific naming or nomenclature we use today was introduced by 
Carolus Linnaeus
Certain conventions are followed while writing the scientific names:
1. The name of the genus begins with a capital letter.
2. The name of the species begins with a small letter.
3. When printed, the scientific name is given in italics.
4. When written by hand, the genus name and the species name have to be 
underlined separately

FOR MORE SOLVED PAPER CLICK HERE

Class 10 Board papers SA 2 [ helpfull for SA-2 March 2015]

Well you all finished or nearby finishing SA-1 . Now read these Questions and start preparation for SA-2 March 2015
For more Question Paper  Click on Image

Monday, September 22, 2014

9th IMPROVEMENT IN FOOD RESOURCES: SOLVED QUESTIONS Biology

Get the CBSE Class 9th Science chapter, Improvement in Food Resources Important Questions & Preparation Tips SA-1 for 2015. This will provide you the idea that what type of Questions will be framed in Exam and from what topics. The pattern in which the Question Paper is set is quite different from the manner in which the course structure is defined actually. Consider the mentioned terms/questions at the time of studying.

Verghese Kurien, the father of White Revolution in India and the founder of Amul, died after a brief spell of illness early on Sunday at Nadiad in Gujarat


1. State one demerit with composite fish culture system. [2010 (T-I)]

Ans: fish breed only during monsoon and lack of availability of good quality seeds

2. State one importance of photoperiod in agriculture. [2010 (T-I)]

Ans: photoperiod in agriculture provide adequate light for flowering

3. Name one micronutrient and one macronutrient which plants take from the soil. [2010 (T-I)]

Ans: Macronutrients are: Calcium (Ca) , Magnesium (Mg)

Micronutrients  are: Boron (B)  Chloride (Cl)

4. List two desirable traits for fodder crops.[2010 (T-I)]

Ans: Tallness and profused branching are the desired characteristics for producing a higher yield of 
fodder crops.

5. Distinguish between a mullet and a prawn. [2010 (T-I)]

Ans: Mullet is a type of fish while prawn is a crustacean. Both live in water and serve as a food 
supplement worldwide. prawn belongs to group arthropoda whereas mullet belongs to group pisces. so you can use their characteristic features to distinguish between the two

6. Name two breeds of cows selected for long  lactation period. [2010 (T-I)]

Ans: After giving the birth of a calf ,a cow secretes milk.the duration of milk secretion of a cow that 
is the period of time till which the cow secretes milk is known as lactation period.brownswiss and 
jersey are selected for their long lactation period.

7. How does Bombay duck differ from common carp ? [2010 (T-I)]

Ans: Bombay duck is a marine fish, while common carp is a fresh water fish.

8. How does catla differ from mrigal? [2010 (T-I)]

Ans: Catla belongs to genus Catla while mrigal belongs to genus Cirrhinus

9. Name the two vitamins which are added in the poultry feed. [2010 (T-I)]

Ans: vitamins A and K

10. From where do plants acquire the following nutrients? [2010 (T-I)] (a) Nitrogen (b) Hydrogen

Ans:  (a) Nitrogen  from soil       (b) Hydrogen from water

11. State the reason of introducing Italian bee variety in bee farms. [2010 (T-I)]

Ans: An Italian bee variety, A. mellifera, has also been brought in to increase yield of honey.

12. Mention any two activities for the improvement of crop yield. [2010 (T-I)]

Ans: The major activities for improving crop yields  are :

• Crop variety improvement

• Crop production improvement

• Crop protection management.

13. Which nutrients are supplied by cereals and pulses ? [2010 (T-I)]

Ans:  carbohydrate and protein.are supplied by cereals and pulses respectively,

14. Name two fresh initiatives taken to increase the water availability for agriculture. [2010 (T-I)]

Ans: Two new irrigation systems have been developed to save water and increase the availability of 
water to the crops. These are:

1) Drip irrigation system: Here, water is supplied to the roots of the plants directly in a drop wise 
manner. This prevents unnecessary wastage of water.

2) Sprinkler system: Here water is sprinkled over the crops like it happens in rain. So, water is 
absorbed by the soil in a better way.

15. Mention any two advantages of using Italian bee variety in honey production. [2010 (T-I)]

Ans: The Italian bees have high honey collection capacity. They sting somewhat less. They stay in a 
given beehive for long periods, and breed very well.

16. Name any two weeds of crop field. [2010 (T-I)]

Ans: Xanthium (gokhroo), Parthenium (gajar ghas),Cyperinus rotundus (motha).

17. Define animal husbandry. [2010 (T-I)]

Ans: Animal husbandry is the management and care of farm animals by humans for profit

18. What are genetically modified crop? [2010 (T-I)]

Ans: GM (Genetically modified) crops   are the crops in which a gene from some other organism may be another plant or a microorganism is inserted into the plant to get desired characteristic such as disease resistance, response to fertilizers, product quality and high yields. For example:   Cotton, 
Maize, Papaya, Soybean, Sugarbeet, Squash   , etc.

19. Mention the components of food present in vegetable and fruits. [2010 (T-I)]

Ans: Vegetables, spices and fruits provide a range  of vitamins and minerals in addition to small 
amounts of proteins, carbohydrates and fats.

20. Name the cereals which provide us carbohydrate for energy requirement. [2010 (T-I)]

Ans: Cereals such as wheat, rice, maize, millets and sorghum provide us carbohydrate for energy 
requirement.

21. Give technical term for milk producing females and farm labour animals. [2010 (T-I)]

Ans: Milk-producing females are called milch animals (dairy animals), while the ones used for farm  labour are called draught animals

22. Why do we eat pea and groundnut? [2010 (T-I)]

Ans:  pea (arhar) provide us protein where as  ground nut provide us with necessary fats.

23. Mention two examples of mixed cropping.

Ans: Some combinations of mixed cropping are :-

Wheat and Mustard

Maize and urad (pulse)

Groundnut and sunflower

24. Name two factors responsible for losses of grains during storage?

Ans: Factors responsible for such losses are biotic— insects, rodents, fungi, mites and bacteria, and abiotic- inappropriate moisture and temperatures in the place of storage.

25. (a)Name an exotic variety of honey bee grown in India. (b) What is called the rearing of fish on a 
large scale?

Ans: (a)Pisciculture        (b) Apis Cerana indica

26. Name two exotic cattle breed with long lactation period? [2014 (T-I)]

Ans: the period of milk production after the birth of a calf is called lactation period. Jersey and 
Brown Swiss are two exotic cattle breed having long lactation period.

27.  In what way boilers, feed is different from layers? [2014 (T-I)]

Ans: Broilers feed is protein rich with adequate fat. The level of vitamins A and K is kept high in the 
poultry feeds.

28. Which one boiler or layers mature earlier? [2014 (T-I)]

Ans: Broilers have fast growth rate

29 What type of shelter is provided to boiler and layers? [2014 (T-I)]

Ans: Broilers do not require much space and lighting

30. Mention the preventive and control measure used before grain are stored? [2014 (T-I)]

Ans: cleaning of the produce before storage, proper drying of the produce first in sunlight and then in 
shade, and fumigation using chemicals that can kill pests.

31. List two biotic and abiotic factor each that responsible for grain loss?[2014 (T-I)]

Ans: Factors responsible for grain losses are biotic— insects, rodents, fungi, mites and bacteria, and 
abiotic— inappropriate moisture and temperatures in the place of storage.

Improvement in Food Resources

CBSE solved ,unsolved test papers,Notes, Assignments and Guess Papers  : First Term: Improvement in Food Resources. Plant and animal breeding and selection for quality improvement and management ; use of fertilizers, manures; protection from pests and diseases; organic farming.


IX- Improvement in Food Res Solved Questions 
IX- Imp. Food Resources: Revision assignment 
IX- Food Resources Quick revision notes by KV
IX- Formative Assessment-II  Questions paper 
Improvement in Food Resources New Study Notes

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