Sarpang Lower Secondary School
Sarpang Dzonglkhag
Mid-Term Examinations-2014
Class: VII
Total Marks: 100
Subject: Science Writing
Time: 2
hours
hours
Name: …………………………………………… Roll no: ……… Section: …….
Read
the following directions carefully
Answer all the questions and write neatly
Question-1
Direction: Each question is followed by
from possible answers. Choose the correct answer and write it down in your
answer sheet.
(25×1marks)
1. Ability
of animals to fit into its surrounding is
*Hide * mask * symmetry *camouflage
Ans: …………………………………..
2. The
nasal chambers open into
*Pharynx * trachea * oral cavity * lungs
Ans: ………………………………………….
3. Which
is not a sign that a chemical change has occurred?
*There is a colour
change * the original substance is
obtained easily
* Heat or light are
given off*A new substance with different properties is formed
Ans: ………………………………………….
4. Cell
are best seen with
*naked eye *simple microscope *hand lens *compound microscope
Ans: ………………………………………….
5. The
perfume used by one of your smell in the classroom. This is due to
*Conduction *diffusion *evaporation *sublimation
Ans: ………………………………………….
6. Which
of the following is not a homogeneous mixture?
*clean air *smoke
*solution of salt in water *brass
Ans: ………………………………………….
7. Micronutrients
are those nutrients which are required by plants in……………….quantities.
*small *big *equal *unequal
Ans: ………………………………………….
8. Solubility
of solute varies with
*moisture *light *temperature *water
Ans: ………………………………………….
9. A
child shows poor physical growth with loose folds of skin, very thin arms and
legs, and is very lethargic. Identify the disease.
*anaemia *goitre *kwashiorkor *marasmus
Ans: ………………………………………….
10. Which
of the following statement is correct?
*all metals are
ductile *all non-metals are
ductile *generally metals are
ductile *some non-metals are
ductile
Ans: ………………………………………….
11. Carbon
dioxide from the air enters the leaf by diffusion through small openings called
*xylem *stomata *roots *guard cells
Ans: ………………………………………….
12. The
structural and functional units of all living organisms is
*onion *cell *Plato *egg of an ostrich
Ans: ………………………………………….
13. Organisms
that are not well adapted to their environment may face
*adaptation *variation *aestivation *Extinction
Ans: ………………………………………….
14. Milk
containing mixture of fats and carbohydrates is an example of …………..mixture.
*homogeneous *heterogeneous *separation techniques *home made
Ans: ………………………………………….
15. Food
rich in ………….. and starches are grouped as carbohydrates.
*salt *water *sugar *iodine
Ans: ………………………………………….
16. Matter
can be classified ………………….. types.
*1 *2 *3 *4
Ans: ………………………………………….
17. Most
of the metals are extracted from their ores using the following separating
techniques EXCEPT
*Magnetic
separation *froth flotation *gravity separation *sieving
Ans: ………………………………………….
18. Leguminous
plants are the source of
*nitrogen *hydrogen *phosphorus *calcium
Ans: ………………………………………….
19. Which
chemical is used in soap making?
*sodium hydroxide *sodium chloride *potassium hydroxide *potassium nitrate.
Ans: ………………………………………….
20. Climbs
the tree trunk and picks insects from cracks in the bark is an adaptive feature
of
*crow *humming bird *egret *wood pecker
Ans: ………………………………………….
21. Sugarcane,
dove, deer and tiger are
*herbivore *carnivore *unicellular *multicellular
Ans: ………………………………………….
22. ‘Delays
blood clotting’ disease is caused due to the lack of vitamin
*A *K
*C *E
Ans: ………………………………………….
23. The
process of burning food in living cells in presence of oxygen is called
*respiration *germination *photosynthesis *conservation of mass
Ans: ………………………………………….
24. The
symbol of the element chromium is
*Ch *Cr *C *Cm
Ans: ………………………………………….
25. All
the following plants are aquatic EXCEPT
*Lotus *hydra *water lily *blue poppy
Ans: ………………………………………….
Question
2
Fill in the blanks:
(10×1 marks)
1. ………………………….
Discovered tiny compartment in a piece of cork and named as cell.
2. Nucleus
is filled with a dense semi fluid substance called ………………………….
3. Diseases
which are not caused by……………………….. are called non-communicable diseases or
non-infectious diseases.
4. The
medulla oblongata is the lowest portion of the…………………..
5. During
photosynthesis ………………………………… is given out as a by-product.
6. ………………….is
the process by which a dormant seed grows to a young plant or seedling.
7. A
……………………… is a place where organisms survive and reproduce.
8. Inter
molecular forces is negligible in ………………………….
9. Greenhouse
effect leads to …………………………………
10. ……………………………
can also form homogeneous mixtures called alloys
Question 3
Direction: Write
TRUE or FALSE against the given statements. (10×1 marks)
1. Gold
is an impure substance. ( )
2. Colour
fading from your cloth is a chemical change ( )
3. Particles
are always in the state of motion. ( )
4. Bromine
is a liquid metal. ( )
5. The
plant cactus that lives in a region with less rainfall. ( )
6. The
formation of new species is called evolution. ( )
7. Type
germination seen in cotton is hypogeal. ( )
8. Bone
meal is an organic fertilizer of powdered animal bones( )
9. Rabies
is caused by rhabdovirus. (
)
10. Grass
is a multicellular organism. (
)
Question 4
Directions match
the items of column I with correct answers of column II. (10marks)
|
1.
|
Living,
semi permeable membrane
|
A. Decantation
|
|
2.
|
The
terminal ends of the respiratory system
|
B. Carbon
monoxide
|
|
3.
|
The
simplest unit of protein
|
C. Mushroom
|
|
4.
|
The
smallest units of the nervous system which carries impulse
|
D. Alveoli
|
|
5.
|
Phosphorus
|
E. Cell
membrane
|
|
6.
|
Calcium
|
F. Amino
acid
|
|
7.
|
Decomposer
|
G. Mercury
|
|
8.
|
Metal
that I used in thermometer
|
H. Premature
falling of leaves
|
|
9.
|
A
greenhouse gas
|
I. Neuron
|
|
10
|
A
mixture of a liquid and a heavy insoluble solid
|
J. Premature
falling of fruits
|
|
|
|
K. Algae
|
|
|
|
L. Oxygen
|
Question 5
A. Draw
a diagram showing the phases of menstruation cycle and explain about it.(4)
B. Why
do you think it is not wise to hit hard on someone’s back? (1)
C. What
are the major aspects of personal health and hygiene? (2)
D. Define:
(2)
I.
Axial skeleton
II.
Disease
Question
6
A.
I.
Identify the two types
of ecosystems.
(2)
II.
Draw a pyramid of
number for one of the ecosystems.
(1)
III.
What impact will it
have to the ecosystem if a tiger is introduced? (1)
B. Deer
and goat look like similar, but they do not belong to the same species. Why?(1)
C. Write
a short note on gas pressure with diagram. (2)
D. Differentiate
between metals and non-metals. (2)
Question 7
A. How
can you prepare saturated solution? Explain the procedures. (3)
B. Temperature
is one of the conditions that affect both physical and chemical change. Support
the statement with an example each.(3)
C. What
do you know about diamond? Write down
about its functions.(2)
D. Write
the atomic number of7N 14
(1)
Question 8
A. Churning
is used to get butter from the milk.
I.
Name two substances
that you get from the churning. (1)
II.
What is the separation
technique used? Why?
(2)
B. Figure
given below shows a cell. (4)
I.
Name the cell
(1)
II.
Identify the 3 basic
structures of the cell. (3)
C. What
will happen if methylene blue falls on your clothes or skin? Where we use it?(2)
Question 9
A. Does
photosynthesis occur in mushroom? Give a reason to support your answer. (2)
B. How
many types of respirations are there in organisms? What are they? Explain.(4)
C. The
following figure shows the structure of a bean seed. Identify its parts. (×6=3)
×6=3)
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