JESUS SAVIOUR'S SCHOOL
CLASS - IX
REVISION TEST-1 (2019-20)
SUB - BIOLOGY
Section (A) - One Marks Questions:-
Q1. Name common examples of disease caused by viruses.
Q2. Differentiate between acute and chronic diseases?
Q3. What are hydrocarbons?
Q4. Why life is not possible on Mass and Venus?
Q5. Differentiate between manure and fertilizes?!
Q6. What management practice are common in dairy and poultry farming
Q7. Name two fresh water fishes?
Q8. What are the advantage of intercropping and crop rotation
Section (B) - Two Marks Questions:-
Q9. What are the difference between broilers and layers and
Q10. What is ozone depletion explain?
Q11. What is principal of immmunisation & vaccination?
Q12. Draw a well labeled diagram of nitrogen cycle?
婆业第起來,還验,率,这些都是生整,
表等要求。
Answers
Answer:12.above
1.
Explanation:
diseases by virus of dengue.,Arallpox, poho, flu, fauch, common cold, influenza, Measles, chicken pox ,Aids, hepatitis B extra.
2.
acute diseases which last for only very short period of time and affected by suddenly and quickly .
chronic diseases diseases which last for a long time even as much as lifetime are called chronic diseases .
examples of acute diseases are cold cough typhoid etc.
examples of chronic diseases are diabetes tuberculosis elephantiasis etc.
3.
hydrocarbons are made by the hydrogen of molecules and the carbon atoms of molecules when they meet then the big the hydrogen carbons .
4.
planet such as Venus and Mars have a not life in known to exist the major component of the atmosphere is found the carbon dioxide at a gas is not. Oxygen and other cases for the living in fact carbon dioxide constitutive 95-97% of the atmosphere on Venus and Mars .
5.manure
a. these are organic substances .
b. diesel made up of natural substances (decomposition of plant and animal waste ).
c. these have less amount of nutrient .
d. these are cheap and prepared in rular forms for fields.
e. menus are slowly slowly absorbed by the plants is there insoluble in water .
f. it is difficult to store and transport .
fertilizers
1.these are inorganic substances .
2.these are made of chemical substances .
3.they have large amount of nutrients .
4.these are costly and are prepared in factories .
5.fertilizers are easily absorbed by the plants they are soluble in water .
6.there is storage and transportation is easy .
ans7
capture fishing means the culture fishing the found in the lakes Ponds and other types of the places and the fishes are the the rohu, catla ,maigals etc
8.
intercropping :two or more crops are grown on the same field in a definite pattern. few rows of 14 by few rows of the others .example soybean + made, finger millet + lobia
advantage:
soil fertility is maintain. it controls pest and weeds.in crops are can be grown in succession with only one small preparation.
9.
broiler :Birds grown for obtaining meat and called broilers. they can be used after 6 -8 weeks from their birth
10.
depletion of the reason are the human the can we reducing the nitrogen and site how is Sodium and carbon dioxide and types of the particles which are the harmful for the Ozone layer which is protect from the our ultraviolet Ray so the the the factories acid rains and the others Sodium and chemicals can we .And the chlorofluorocarbons can we kill the Ozone layer and it is the hole in this because of the uses of refrigerator and A. C
11 .
principle of immunization and vaccination is the administration of a vaccine to help to immune system develop protection for medicines works in a container micro organism in a week and non effective state .
Answer:
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