Life Processes Class 10 MCQ Quiz – Test Your Knowledge!

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?

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

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.

Assertion (A): Capillaries have walls that are just one cell thick.

Reason (R): The exchange of material between the blood and surrounding cells takes place across the capillaries.

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 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?

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.

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

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

Opening and closing of stomatal pore depend on:

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?

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

The excretory system of human beings includes

Look at the diagram below carefully.

Identify the process taking place at Z.