Life Processes Class 10 MCQ Quiz – Test Your Knowledge!

Opening and closing of stomatal pore depend on:

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

Look at the diagram below carefully.

Identify the process taking place at Z.

In the given transverse section of the leaf identify the layer of cells where maximum photosynthesis occurs.

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 statements shows the correct results of the Iodine test performed on the leaf from plant X and Y respectively?

The doctor measured Ravi’s blood pressure and said it is normal now. The range of Ravi’s blood pressure (systolic/diastolic) is likely to be:

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 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

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?

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.

This experimental setup is used to prove the essentiality of which of the following requirements of photosynthesis?

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.

Generally food is broken and absorbed within the body of organisms. In which of the following organisms is it done outside the body?

The labeling for the slide of leaf peel showing stomata by a group of four students who made the diagram and tabulated the labels as follows:

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

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.

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.