PRACTICE TEST 2-Class 10 -Science- Biology-Chapter 5

Class10 - Life Process- biology Mock Test.

This Test Consist of 20 Questions

Total Time - 20 -Minutes

Which one of the following is the correct combination of the relevant materials required for setting up an experiment to show that light is necessary for photosynthesis.

Destarched potted plant, strips of black paper and iodine solution.

Destarched leaves, strips of black paper, starch solution and iodine crystal

A potted plant, strips of coloured paper, starch solution, iodine and potassium iodide.

Destarched potted plant, strips of black paper, starch solution, potassium iodide.

None

Human blood pressure (B.P.) is represented by what is called a pressure picture. In a normal human being, the pressure picture is 120/80/40 where 120 represents systolic pressure, 80 represents diastolic pressure, and 40 represents the pulse pressure which is the resultant difference in the two pressures. In one of the patients, the pressure picture was found to be 140/110/30 suggesting that there has been

an increase in the resistance from arteries

a decrease in the resistance from veins

a decrease in the resistance from arteries

an increase in the resistance from veins

None

Ventricle is thick walled as compared to atrium, because:

It receives blood from the atrium.

None of the above

It pumps blood.

It is present on the posterior side.

None

Which one represents pulmonary circulation?

Left auricle (oxygenated blood) → → lungs (deoxygenated blood) → → Left auricle

Left auricle (deoxygenated blood) → → lungs (oxygenated blood) → → Right auricle

Left auricle (oxygenated blood) → → lungs (deoxygenated blood) → → Right auricle

Right auricle (deoxygenated blood) → → lungs (oxygenated blood) → → Left auricle

None

Exchange of wastes, nutrients, gases, and hormones between the blood and the body cells occurs in the

Pick the odd one out among the parts of the alimentary canal:

Mouth

Buccal cavity

Pharynx

Pancreas

None

Which of the following process can be skipped if someone has taken glucose directly?

Ingestion

Absorption

Digestion

Assimilation

None

In an experiment to test the presence of starch in a leaf, the leaf is boiled in alcohol for a few minutes using a water bath. This is an essential step in the experiment because:

Alcohol cleans the leaf.

Alcohol is highly volatile.

Alcohol gives nutrients to the leaf.

Alcohol decolourises the leaf.

None

A student covered a leaf from a destarched potted plant with a black paper strip and kept the plant in the garden in the morning hours. In the evening he tested the covered portion of the leaf to test the presence of starch. In this case, the student was trying to show that:

Light is necessary for photosynthesis

CO2 is given out during respiration

Chlorophyll is essential for photosynthesis

CO2 is essential for photosynthesis

None

10.

Choose the correct statement that describes arteries

They have thin walls with valves inside, blood flows under low pressure and carries blood away from the heart to various organs of the body.

They have thick elastic walls, blood flows under high pressure; collect blood from different organs and bring it back to the heart.

They have thick elastic walls, blood flows under low pressure; carry blood from the heart to various organs of the body.

They have thick elastic walls without valves inside, blood flows under high pressure and carries blood away from the heart to different parts of the body.

None

11.

To determine that light is essential for photosynthesis, following are the steps, but not in

sequence :

(i) Pluck the leaf and do the starch test.

(ii) Keep the selected plant in sunlight.

(iii) Destarch the plant for 48 - 72 hours.

(iv) Cover the leaf with black paper strip.

The correct sequence is

(iii), (i), (ii), (iv)

(iii), (iv), (ii), (i)

(i), (ii), (iv), (iii)

(iii), (ii), (iv), (i)

None

12.

Choose the incorrect statement.

Oxygen is vital in respiration for removal of hydrogen.

There is complete breakdown of glucose in fermentation.

During the conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesized.

Pyruvate is formed in the mitochondrial matrix.

None

13.

Hypotension may not be due to

14.

Match the column.

Column I Column II

a Superior Vena Cava p Carries deoxygenated blood to lungs

b Inferior Vena Cava q Carries oxygenated blood from lungs

c Pulmonary Artery r Brings deoxygenated blood from lower parts of body to right atrium

d Pulmonary vein t Brings deoxygenated blood from upper parts of body into right atrium

a - q, b - t, c - r, d - p

a - t, b - r, c - p, d - q

a - t, b - p, c - q, d - r

a - t, b - p, c - r, d - q

None

15.

The part of the cardiovascular system that transports oxygen-depleted blood from the heart to the lungs brings oxygenated blood back to the heart is:

16.

The function of the glomerulus and Bowman's capsule of the nephron is to

Reabsorb water into the blood.

Filter the blood and form the filtrate

Reabsorb salts and amino acids.

Eliminate ammonia from the body.

None

17.

Aerobic and anaerobic respirations differ from each other in all aspects except:

Output of energy.

Presence of absence of oxygen.

Breakdown of glucose in cytoplasm.

End products.

None

18.

Semidigested food that moves down oesophagus is known as

19.

The cells surrounding the stomata are known as

20.

Blood vessel which brings oxygenated blood to left auricle is:

Chapter 5 - Life Process

Chapter 6 -Control and Coordination

Chapter 7: How Do Organisms Reproduce

Chapter 8 :Heredity and Evolution

ASSERTION AND REASON

CASE BASED QUESTIONS

Curriculum

Ncert Class 10 - science - Biology

Chapter 5 - Life Process

Chapter 6 -Control and Coordination

Chapter 7: How Do Organisms Reproduce

Chapter 8 :Heredity and Evolution

ASSERTION AND REASON

CASE BASED QUESTIONS

PRACTICE TEST 2-Class 10 -Science- Biology-Chapter 5 – Life Processes