Tag: basics of roots and stem

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Questions Related to basics of roots and stem

Multiple choice biology types and parts of plants leaves root, stem, and leaves basics of roots and stem

The process by which plants lose water from leaves by evaporation is called as

  1. Respiration

  2. Photosynthesis

  3. Transpiration

  4. Absorption
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Transpiration is the process of release of water vapour from the stomata. 

Respiration is the process of breakdown of organic compounds to release energy.
Photosynthesis is the process of synthesis of food from inorganic compounds like carbon dioxide and water and sunlight.
Absorption is the uptake of substances into a system like absorption of water by the roots.
So the correct answer is ' Transpiration'.

Multiple choice biology types and parts of plants leaves root, stem, and leaves basics of roots and stem

Transpiration takes place maximum through which of the following structures in plants?

  1. Flowers

  2. Stem

  3. Leaves

  4. Roots
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Transpiration is the process of release of water vapour from the stomata.

The stomata are present on the leaves.
Their are other types of transpiration but 90% of it takes place through Stomata.
So the the correct answer is 'Leaves'.

Multiple choice biology types and parts of plants leaves root, stem, and leaves basics of roots and stem

Potometer works on the principle of -

  1. Potential difference between the tip of the

    tube and that of the plant

  2. Amount of water absorbed equals the amount

    transpired

  3. Osmotic pressure

  4. Root pressure
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
A potometer is also known as transpirometer, is a device used for measuring the rate of water uptake of a leafy shoot which is almost equal to the water lost through the transpiration. The causes of water absorption are photosynthesis and transpiration.
So, the correct answer is 'Amount of water absorbed is equal to the amount transpired'.
Multiple choice biology types and parts of plants leaves root, stem, and leaves basics of roots and stem

Transpiration is best defined as

  1. loss of water from the plant

  2. loss of water as vapour from the plant

  3. evaporation of water from the surface of leaves

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Transpiration is defined as the evaporation of water from plants, especially leaves. It occurs through leaves and other parts of the plant. It happens through leaves while their stomata remains open for the passage of CO2 and O2 during photosynthesis.

So, the answer is option C.

Multiple choice biology types and parts of plants leaves root, stem, and leaves basics of roots and stem

State whether the following statements are True or False. Rewrite the false statements correctly.
Transpiration is the loss of water from the roots of the plant.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Transpiration is the loss of water in the form of water vapours from aerial parts of the plant such as stems, leaves and flowers. 

Hence, the given statement is 'False'.

Multiple choice biology types and parts of plants leaves root, stem, and leaves basics of roots and stem

The stem of the plant when cut and dipped in the water helps in the transport of 

  1. Water

  2. Minerals

  3. Food

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Stem contains special complex permanent tissues called xylem. The xylem helps in the conduction and transportation of water in one direction that is from stem to leaves. 

So the correct option is 'Water and minerals'.

Multiple choice biology types and parts of plants leaves root, stem, and leaves basics of roots and stem

The plants with weak stem growing by spreading on the ground are 

  1. Creepers

  2. Runners

  3. Climbers

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  1. Creeper is considered to be the plant that grows along the ground, by means of extending stem or branches and produce fiber-like roots that arise from the base of the stem and such weak stem are called prostrate stem.
  2. Runners are the stem that grows on the ground that forms adventitious roots and able to give rise to a new plant.
  3. Climbers are the plants that climb up other plant or object by the help of tendrils.
So the correct option is 'Creepers'

Multiple choice biology types and parts of plants leaves root, stem, and leaves basics of roots and stem

The water and minerals are conducted by the stem to which part/s of the plant?

  1. Leaves

  2. Flowers

  3. Buds

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Stem conducts the water and minerals from the root at the site of absorption to the leaves and other parts of a plant with the help of vascular bundles called xylem.
So, the correct option is 'All of the above'