Life Processes Class 10 MCQ Quiz – Test Your Knowledge!

The figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are airtight and have been kept in light for 6 hours. Then, the Iodine test is performed with one leaf from each of the two plants X and Y.

The function of KOH is to absorb

Identify the option that indicates the correct enzyme that is secreted in locations A, B,  and C.

In which of the following vertebrate groups, the heart does not pump oxygenated blood to different parts of the body?

The given figure represents the structure of a nephron.

Which section of the nephron is responsible for concentrating the solute in the filtrate?

Carefully study the diagram of the human respiratory system with labels A, B, C, and D.

Select the option which gives correct identification and the main function and characteristic.

Study the table below and select the row that has the incorrect information.

Lime water turns cloudy in the presence of a gas which is a by-product of respiration.

Shown below are four setups kept in sunlight for 24 hours.

In which setup is lime water expected to be the cloudiest?

What is the mode of nutrition in fungi?

The figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are airtight and have been kept in light for 6 hours. Then, the Iodine test is performed with one leaf from each of the two plants X and Y.

Which of the following steps can be followed for making the apparatus airtight?

1. Placing the plants on a glass plate
2. Using a suction pump
3. Applying vaseline to seal the bottom of the jar
4. Creating a vacuum

The figure given below shows a schematic plan of blood circulation in humans with labels (i) to (iv). Identify the correct label with its functions.

Study the graph below that represents the blood test reports of an athlete just before and after a race.

Choose the correct combination of plots provided in the following table.

The characteristic processes observed in anaerobic respiration are:

1. Presence of oxygen
2. Release of carbon dioxide
3. Release of energy
4. Release of lactic acid

Identify the phase of circulation which is represented in the diagram of the heart given below. Arrows indicate the contraction of the chambers shown.

Which of the following statement(s) is(are) true about human heart?

1. Left atrium receives oxygenated blood from different parts of the body while the right atrium receives deoxygenated blood from the lungs.
2. Left ventricle pumps oxygenated blood to different body parts while the right ventricle pumps deoxygenated blood to the lungs.
3. Left atrium transfers oxygenated blood to the right ventricle which sends it to different parts of the body.
4. Right atrium receives deoxygenated blood from different parts of the body while the left ventricle pumps oxygenated blood to different parts of the body.

Study the picture given above and choose the correct combination of plots provided in the following table: