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NTSE SAT Biology - Life Processes Sample Question Paper

SAT Biology - Life Processes

Exam Duration: 45 Mins Total Questions : 30

1 )

The concentration of urea is least in:

(a)
Renal artery
(b)
Renal vein
(c)
Post canal
(d)
Dorsal aorta

2 )

Blood is composed of ___________

(a)
Plasma and red blood cells
(b)
Plasma and formed elements
(c)
Red and white blood cells
(d)
Red blood cells, white blood cells and platelets

3 )

Stomata are present on the ______________ of the leaves.

(a)
Upper surface only
(b)
Lower surface only
(c)
Mostly upper surface
(d)
Mostly lower surface

4 )

The ascent of sap in plants takes place due to __________

(a)
Root pressure
(b)
Transpiration pull
(c)
Both (a) and (b)
(d)
Osmosis

5 )

____________ carries oxygenated bloo(d)

(a)
Pulmonary artery
(b)
Hepatic portal vein
(c)
Pulmonary vein
(d)
All of the above

6 )

The main cells present in lymph are ____________

(a)
Red blood cells
(b)
Platelets
(c)
Lymphocytes
(d)
Monocytes

7 )

The numbers of ATP molecules produced during aerobic and anaerobic respiration are _______ and __________ respectively.

(a)
2 and 38
(b)
0 and 2
(c)
38 and 0
(d)
38 and 2

8 )

Respiratory surface should he ___________

(a)
Permeable
(b)
Thin
(c)
Richly supplied with blood vessels
(d)
All of the above

9 )

Sneezing can be best described as __________

(a)
Forceful sudden expiration
(b)
Jerky incomplete inspiration
(c)
Vibration of the soft palate during breathing while sleeping
(d)
Something you should never do when someone is going out

10 )

in the lunch, you ate boiled green vegetables, a piece of cooked meat, one boiled egg and a sugar candy. Which one of these foods may have been digested first?

(a)
Boiled green vegetables
(b)
The piece of cooked meat
(c)
Boiled egg
(d)
Sugar candy

11 )

In mitochondrion, the proton gradient required ATP synthesis develops across

(a)
Inner membrane
(b)
Inter-membrane space
(c)
Outer membrane
(d)
F₀-F₁ particles

12 )

Bicuspid and tricuspid valves are open during:

(a)
Ventricular systole
(b)
Ventricular diastole
(c)
Atrial systole
(d)
Late joint diastole

13 )

Typical 'lubb-dupp' sounds heard during heartbeat are due to:

(a)
Closing of bicuspid and tricupid valves
(b)
Closing of semi luna valves
(c)
BIood under pressure through aorta
(d)
Closure of bicuspid-tricuspid valves followed by semilunar valves

14 )

In adult man, normal BP is :

(a)
100/80 mm Hg
(b)
120/80 mm Hg
(c)
100/120 mm Hg
(d)
80/120 mm Hg

15 )

Polycythemia is-

(a)
Increased RBCs count
(b)
Decreased WBCs count
(c)
Increased WBCs count
(d)
Decreased platelets count

16 )

The coagulation of blood occurs due to

(a)
Change of fibrinogen in the network of fibre
(b)
Destruction of erythrocytes
(c)
Destruction of leucocytes
(d)
Formation of serum.

17 )

William Harvey is known for discovery of

(a)
Blood circulation
(b)
Blood clotting
(c)
Respiration
(d)
Digestion

18 )

Cardiac cycle in man takes about

(a)
0.5 seconds
(b)
1.0 seconds
(c)
1.2 seconds
(d)
0.8 seconds

19 )

Substrate which is not filtered through glomerulus:

(a)
Plasma
(b)
Glucose
(c)
Blood corpuscles
(d)
Urea

20 )

The interior of a cow-dung pile kept for a few days is quite warm. This is mostly because:

(a)
Cellulose present in the dung is a good insulator
(b)
Bacterial metabolism inside the dung releases heat
(c)
Undigested material releases heat due to oxidation by air.
(d)
Dung is dark and absorbs a lot of heat

21 )

In man, which blood vessel takes away blood from kidney?

(a)
Afferent arteriole
(b)
Efferent arteriole
(c)
Renalartery
(d)
Renal portal vein

22 )

In which of the three groups of the following mammals is uric acid also excreted out:

(a)
Carnivora, insectivora and marsupials
(b)
Elephants, chiroptera, primates
(c)
Logomorpha, man, horse
(d)
Man, apes, dalmatian dog

23 )

Waste product/s produced by plants is/are

(a)
CO₂
(b)
Water
(c)
Oxygen
(d)
All of these

24 )

Salivary amylase converts starch into

(a)
maltose
(b)
sucrose
(c)
glucose
(d)
none of the above

25 )

Mastication occurs in

(a)
Mouth
(b)
Oesophagus
(c)
Stomach
(d)
Ileum

26 )

Normal human breathing rate is

(a)
20-25 times per minute
(b)
15-18 times per minutes
(c)
72 times per minute
(d)
40-45 times per minute

27 )

_________________ is the only fluid tissue in our body

(a)
blood
(b)
hormones
(c)
enzymes
(d)
urine

28 )

Which blood cells helps in clotting of blood?

(a)
RBC
(b)
WBC
(c)
Platelets
(d)
All of the above

29 )

_______________ is the instrument used to measure blood pressure

(a)
Stethoscope
(b)
Sphygmomanometer
(c)
Electro cardiogram
(d)
Haemocynometer

30 )

The function of tracheal hairs is to -

(a)
pass mucus out
(b)
pass mucus in
(c)
pass air out
(d)
pass air in

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NTSE SAT Biology - Life Processes Sample Question Paper

SAT Biology - Life Processes

Exam Duration: 45 Mins Total Questions : 30

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