Bissoy.com
Doctors Medicines MCQs Q&A

Which of the following statements correctly describe(s) the function of transpiration in plants? (A) It helps in cooling the plant.  (B) It helps in the absorption and distribution of water and minerals to leaves. (C) It helps in the exchange of gases with the environment. 

Which of the following statements correctly describe(s) the function of transpiration in plants? (A) It helps in cooling the plant.  (B) It helps in the absorption and distribution of water and minerals to leaves. (C) It helps in the exchange of gases with the environment.  Correct Answer A, B and C 

Concept:

Transpiration:

  • The term "transpiration" refers to the process of removing surplus water from the plant's body.
  • Water molecules in the plant tissues are removed from the aerial regions of the plants during transpiration.
  • Plants only use a small portion of the water they absorb for growth and development.
  • The remainder is expelled through transpiration.
  • 90% of excess water is transpired by stomata present in the leaves of the plants. 
  • A very little amount of water is transpired from the stems or barks of the plants with the help of lenticels.

Explanation:

  • Transpiration helps in cooling the structures of the plant when exposed to hot sunlight.
  •  Excess water is removed from the cells of the plant to prevent plant decay.
  • The osmotic balance of the cell is maintained by the process of transpiration.
  • Transpiration is the unavoidable consequence of gas exchange in the leaf. This is because the plant has to open pores on the leaves called the stomata.
  • When they open gas exchange occurs and the plant releases Oxygen as waste while simultaneously absorbing CO2 for use during photosynthesis.
  • It also helps in the absorption and distribution of water along with minerals from the soil through roots. 

Hence, all options A, B, C are the correct one.

Related Questions

Consider the following statements and choose the correct answer:
1. Transpiration usually occurs during day-time whereas guttation takes place in night
2. In transpiration water comes out in the form of liquid, whereas in guttation the water is given off in the form of vapour
3. Transpiration water is pure but guttation water contains inorganic salts and sugars
4. Transpiration is a controlled phenomenon whereas guttation is an uncontrolled phenomenon
Consider the following statements for cooling towers: 1. Cooling tower is an artificial device used to cool the hot cooling water coming out of condenser more effectively. 2. The amount of water usually lost with induced draft cooling tower ranges from 5% to 6% by evaporation. 3. The amount of water usually lost with induced draft cooling tower ranges from 7% to 8% by drift losses. 4. The rate of evaporation of water and its cooling effect on the remaining water depends upon the relative humidity of air passing through the tower. Which of the above statements are correct?
Study the following statements.
1. Excretion of water in the form of liquid droplets from leaves or uninjured plant parts is called gullation.
2. Transpiration help in ascent of sap.
3. Small opening in the leaf meant for gaseous exchange and transpiration is called stomata.
Which of the statements given above are correct ?
Below are given statements. You have to take the given statements to be true even if they appear to be at variance with commonly known facts, and then decide which of conclusions logically follows from the given statements. For each question, mark out an appropriate answer choice that you think is correct. Statements: Some roots are stems. All stems are leaves. No leaves are plants. Some plants are foods. Conclusions: 1) Some roots are leaves. 2) No stem is plant. 3) Some foods are not leaves.
A teacher of Class III had asked children to classify the leaves of the following trees/plants into different groups—lemon, mango, basil, mint, neem, banana, etc. Some students classified leaves as (a) leaves with medicinal values and leaves without medicinal values, (b) big leaves and small leaves. The teacher marked group (a) as right and group (b) as wrong. Which of the following statements reflects the teacher's view of learning and assessment?
Which of the following statements about minerals are correct? (A) Minerals are created by natural processes without any human interference (B) Mica and chromite are nonferrous minerals (C) Minerals lying at shallow depths are taken out through open cast mining (D) Minerals are a non-renewable resource
Consider the following statements in respect of a vapour-absorption refrigeration cycle: 1. The absorption refrigeration cycle is generally used when waste heat is a available from an existing source or when free energy like solar energy is to be used. 2. There are no moving parts in the absorption refrigeration plant except a small liquid pump. 3 the value of the coefficient of performance is nearly the same in both vapour-absorption and vapour-compression refrigeration plants. Which of the above statements are correct?
Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: Some plants are leaves. All leaves are twigs. No twig is banana. Conclusions: I. Some plants are bananas. II. Some twigs are leaves. III. Some bananas are leaves.
Which of the following statements about transpiration are correct? Statement 1: Low temperature increases the transpiration rate. Statement 2: Transpiration leads to water and vapor loss.
To pass a test, a candidate needs to answer at least 2 out of 3 questions correctly. A total of 6,30,000 candidates appeared for the test. Question A was correctly answered by 3,30,000 candidates. Question B was answered correctly by 2,50,000 candidates. Question C was answered correctly by 2,60,000 candidates. Both questions A and B were answered correctly by 1,00,000 candidates. Both questions B and C were answered correctly by 90,000 candidates. Both questions A and C were answered correctly by 80,000 candidates. If the number of students answering all questions correctly is the same as the number answering none, how many candidates failed to clear the test?