Biology Part 1 Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Biology. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - Which among the following hormones regulates blood calcium and phosphate?

A - Glucagon

B - Growth hormone

C - Parathyroid hormone

D - Thyroxine

Answer : C

Explanation

Parathyroid hormone is secreted by the parathyroid glands. It is also important in bone remodeling.

Q 2 - Which among the following animals respires through skin?

Answer : C

Explanation

N/A

Q 3 - Consider the following elements, which are responsible for the oxygen transportation in the human body:

1. Blood

2. Lungs

3. Tissue

The correct sequence of transportation is

Answer : B

Q 4 - Consider the following statements:

1. Blood vessels are of three major types – arteries, capillaries, and veins

2. Veins are thin-walled tubes which collect impure blood from the different tissues and carry same back to heart for the purification.

Choose the correct answer from the codes given below:

Answer : C

Explanation

N/A

Q 5 - The deficiency of …………… causes beriberi.

Answer : B

Explanation

Vitamin B1 is readily available in brown rice and vegetables.

Q 6 - Which among the following vitamins essential for the blood clotting?

Answer : C

Explanation

N/A

Q 7 - Consider the following statements:

1. Tropism is an act of plant under which the plant in response to a particular external stimulus e.g. sunlight or/and gravity moves and change the position of its part.

2. Under tropism, the whole part of plant moves in a particular direction.

Choose the correct answer from the codes given below:

Answer : A

Explanation

Under tropism, only some part of plant moves in a particular direction.

Q 8 - Consider the following:

1. Photosynthesis

2. Respiration

3. Decay of organic matter

Which of the actions listed above add carbon dioxide to the carbon cycle?

Answer : B

Explanation

Through photosynthesis, plants prepare their food.

Q 9 - Consider the following statements:

1. Smooth muscles are found in the walls of the digestive tract, urinary bladder, arteries, and other internal organs.

2. Smooth muscles are also known as ‘involuntary muscles.’

Choose the correct answer from the codes given below:

Answer : C

Explanation

Smooth muscles are also known as ‘involuntary muscles,’ as we cannot consciously control them.

Q 10 - Consider the following statements:

1. Cell is the basic structural, functional, and smallest biological unit of life.

2. All organisms are essentially made up of cells.

Choose the correct answer from the given codes:

Answer : C

Explanation

N/A

Q 11 - ……… is known as the graveyard of RBC’s?

Answer : C

Explanation

N/A

Q 12 - Sweating during the physical exercise indicates …

Answer : D

Explanation

Osmoregulation is the maintenance of constant osmotic pressure.

Q 13 - Which among the following is the main causal factor of hydrophobia?

Answer : C

Explanation

Hydrophobia means irrational fear of water.

Q 14 - AIDS, which caused by Human Immunodeficiency Virus (HIV) is a …

Answer : C

Explanation

N/A

Q 15 - Who among the following had first discovered the blood circulation system?

Answer : A

Explanation

N/A

Q 16 - Kyoto Protocol convention is associated with …

A - Mineral exploration in international water

B - Common agreement on international trade

C - Common agreement on human rights

D - Common agreement on climate change

Answer : D

Explanation

Kyoto Protocol is an international treaty that took place on December 11, 1997.

Q 17 - Ascorbic acid is the form of …

Answer : C

Explanation

Ascorbic acid is beneficial for the humans but not for other organisms.

Q 18 - Consider the following statements:

1. The eukaryotic DNA is organized in one or more linear molecules, known as chromosomes.

2. All chromosomal DNA is stored in the cell nucleus, which is separated from the cytoplasm by a membrane.

Choose the correct answer from the given codes:

Answer : C

Explanation

N/A

Q 19 - The pregnant women are being recommended to eat substantial amount of green leafy vegetables in their diet because …

A - The green vegetables are rich source of vitamins and chlorophyll

B - The green vegetables are a rich source of hormones

C - The green vegetables are rich source of folic acid, required for DNA synthesis

D - The green vegetables are a rich source of essential fatty acids required for the cell anabolism.

Answer : D

Explanation

N/A

Q 20 - In relation to transpiration and water movements in plants, consider the following statements?

1. Removing all the leaves from a plant will reduce the flow of water up the stem.

2. Covering both sides of a leaf with a plastic film will reduce both stomatal and cuticular transpiration.

3. Injecting detergents (which lower the surface tension of water) into the xylem of tree trunk could prevent water from reaching the upper branches.

4. Along most of its route through a plant, water moves by diffusion either along cell walls or across protoplasts.

Choose the correct answer from the codes given below:

Answer : B

Explanation

N/A

biology_part1_online_quiz.htm

Print Page