EM 10th Science - Unit

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EM 10th Science - Unit - 14

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Choose the correct answer

1. Active transport involves

1 point

movement of molecules from lower to higher concentration

expenditure of energy

it is an uphill task

all of the above

Clear selection

2. Water which is absorbed by roots is transported to aerial parts of the plant through

1 point

cortex

epidermis

Phloem

xylem

Clear selection

3. During transpiration there is loss of

1 point

carbon dioxide

oxygen

water

none of the above

Clear selection

4. Root hairs are

1 point

cortical cell

projection of epidermal cell

unicellular

both b and c

Clear selection

5. Which of the following process requires energy?

1 point

active transport

diffusion

osmosis

all of them

Clear selection

6. The wall of human heart is made of

1 point

Endocardium

Epicardium

Myocardium

All of the above

Clear selection

7. Which is the correct sequence of blood flow

1 point

ventricle → atrium → vein → arteries

atrium → ventricle → veins → arteries

atrium → ventricle → arteries → vein

ventricles → vein → atrium → arteries

Clear selection

8. A patient with blood group O was injured in an accident and has blood loss. Which group of blood should be used by doctor for transfusion?

1 point

O group

AB group

A or B group

all blood group

Clear selection

9. 'Heart of heart ' is called

1 point

SA node

AV node

Purkinje fibres

Bundle of His

Clear selection

10. Which one of the following shows correct composition of blood

1 point

Plasma - Blood + Lymphocyte

Serum - Blood + Fibrinogen

Lymph - Plasma + RBC + WBC

Blood - Plasma + RBC + WBC + Platelets

Clear selection

11. The heart of amphibians possess ___ chambers.

1 point

Clear selection

12. The heart of fishes possess ___ chambers.

1 point

Clear selection

13. The concept of blood group is derived by ____.

1 point

Wiener

Karl Landsteiner

William Harvey

His

Clear selection

14. Who is regarded as the “Father of Modern physiology”? (OR) Who discovered closed circulatory system?

1 point

His-Atrio

William Harvey

Karl Landsteiner

Edward C. Kendal

Clear selection

15. Identify the conducting tissues by using the arrow marks,

1 point

A is phloem, B is xylem

A is xylem, B is phloem

Both A and B are xylem

Both A and B are phloem

Clear selection

Fill in the blanks.

1. __________ involves evaporative loss of water from aerial parts.

1 point

2. Water enters into the root hair cell through ________________ membrane

1 point

3. Parts of the root (or) structures in root that absorbs water from the soil is _______________

1 point

4. Normal blood pressure is _______.

1 point

5. The normal human heartbeat rate is about _____________ times per minute.

1 point

True or False

1. The phloem is responsible for the translocation of food.

1 point

True

False

Clear selection

2. Plants lose water by the process of transpiration.

1 point

True

False

Clear selection

3. The form of sugar transported through the phloem is glucose.

1 point

True

False

Clear selection

4. In apoplastic movement the water travels through the cell membrane and enter the cell.

1 point

True

False

Clear selection

5. When guard cells lose water the stoma opens.

1 point

True

False

Clear selection

6. Initiation and stimulation of heart beat take place by nerves.

1 point

True

False

Clear selection

7. All veins carry deoxygenated blood.

1 point

True

False

Clear selection

8. WBC defend the body from bacterial and viral infections.

1 point

True

False

Clear selection

9. The closure of the mitral and tricuspid valves at the start of the ventricular systole produces the first sound ‘LUBB’.

1 point

True

False

Clear selection

Assertion and Reasoning

1. Assertion (A) : RBC plays an important role in the transport of respiratory gases.

Reason (R) : RBC do not have cell organelles and nucleus.

1 point

If both A & R are true and R is correct explanation of A.

If both A & R are true but R is not the correct explanation of A.

A is true but R is false.

Both A and R are false.

Clear selection

2. Assertion (A) : Persons with AB blood group are called an universal recipients, because they can receive blood from all groups.

Reason (R) : Antibodies are absent in persons with AB blood group.

1 point

If both A & R are true and R is correct explanation of A.

If both A & R are true but R is not the correct explanation of A.

A is true but R is false.

Both A and R are false.

Clear selection

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