Bissoy.com
Doctors Medicines MCQs Q&A

Which one: of the following plants keep its stomata open during the night and close during the day ?

Which one: of the following plants keep its stomata open during the night and close during the day ? Correct Answer Cactus

The correct answer is Cactus.

Concept:

Stomata

  • The Stomata are openings in the epidermis of most of the aerial parts of the plants, especially the leaves.
  • Stomata regulate the process of transpiration and gaseous exchange.
  • Stomata consists of two bean-shaped cells known as guard cells.
  • It regulates the opening and closing of stomata.

Explanation:

  • The cactus is a desert or a succulent plant that can live under harsh circumstances.
  • The stomata present in the cactus close during the day and open only at night. 
  • During the daytime, they receive an excessive amount of sunshine, and their rate of transpiration tends to rise. 
  • Transpiration is the loss of water in the form of vapors from the plant parts through stomata.
  • If the rate of transpiration increases, the cactus plant will dry out quickly. 
  • To avoid this, they have changed their system in which they open at night and take in carbon dioxide from the atmosphere, and the gaseous exchange occurs before the sunlight. 
  • During the daytime, they close their stomata to reduce transpiration. 
  • Such adaptability has enabled them to live in harsh environments.

Related Questions

In succulent plants, the stomata open during the night and close by the day; which of the following would be the best hypothesis to explain the mechanism of stomatal action in night only?
‘Grand Slam’ refers to winning certain major tennis tournaments in a single calendar year. The name of the tournaments are A. Australian Open, French Open and US Open B. Australian Open, French Open, Wimbledon and US Open.  C. French Open, US Open and Wimbledon D. French Open, US Open, Wimbledon and Olympic
Two statements are given followed by four conclusions numbered I, II, III and IV. 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: I. Some forms are open ended. II. All close ended are forms. Conclusions: I. No open ended are forms. II. Some close ended are open ended. III. No forms are close ended. IV. All open ended are close ended.
A call center company had to arrange transportation for its employees. They asked for quotes from different provider agencies and the following are the options they got: A. This option allows having uniform rate for day and night trips. This would cost you Rs.1000 per trip. B. This option has differential fare for day and night trips. Day trips would cost 700 per trip and night trips would be charged 1200 per trip. C. This option charges depending on the total distance covered in a trip. It charges Rs.800 per trip if trip distance is more than 50 KM and Rs.1100 if trip distance is less than 50 KM. If the company has 3 night trips and all less than 50 KM and 3 day trips less than 50 KM, which would be the best option?
At an Electronic Data processing unit, five out of the eight program sets P,Q,R,S,T,U,V and W are to be operated daily. On any one day, except for the first day of a month, only three of the program sets must be the ones that were operated on the previous day. The program operating must also satisfy the following conditions: 1. If program P is to be operated on a day, V can’t be operated on that day. 2. If Q is to be operated on a day, T must be one of the programs to be operated after Q. 3. If R is to be operated on a day, V must be one of the programs to be operated after R. 4. The last program to be operated on any day must be either S or U. If the program sets R and W are to be operated on the first day, which of the following could be the other program on that day?
In the question below, are given a statement followed by three courses of actions numbered I, II and III. On the basis of the information given, you have to assume everything in the statement to be true, and then decide which of the suggested courses of action logically follow(s) for pursuing. Statement: With just two days to go for the second edition of Amazon Prime Day, the e-commerce giant has been keeping its loyalists busy with a seven-day entertainment marathon. Started on July 10 with the release of Amitabh Bachchan starrer '102 Not Out', Amazon has been dropping one title every day for its Prime members. With Video and Music, Amazon clearly wants to showcase that Prime day is not merely about products. Courses of action: I. Building on the success of its previous sales, Amazon is gearing up for a bigger event, with extra perks for its Prime members in the form of quality video and music content - and not just early access and quicker deliveries. II. Started on July 3, Prime members who play three songs from the millions on Amazon Prime Music stand a chance to win an Echo Dot every day, with two winners announced daily. III. With Raazi and Transformers: The Last Night slated for release in the next two days, members already have access to Dunkirk, Telugu hit Officer as well as Prime Original show, Comicstaan - a reality TV show to find India's next stand-up comedy star.
The following sentences have been taken from the paragraph. The first and last sentences are given and the three sentences in between are jumbled. Rearrange the middle sentences so that we have a coherent paragraph. S1: In the Kingdom of Fools, the king and the ministers were idiots. Q: Anyone who disobeyed would be punished with death. R: They didn’t want to run things like other kings, so they decided to change night into day and day into night. S: They ordered that everyone should be awake at night, do all their work only at night. S5: The people did as they were told for the fear of death.
Consider the following statements and choose the correct answer:
1. Intense or strong light retards the growth of shoot
2. Shade plants are shorter and stockier than sun plants
3. Shade plants have dense covering of hairs while sun plants are less hairy
4. The stems of shade plants are taIler and more branched than that of sun plants
'A' works in 2 shifts of 8 hours each, one in day time & other in night. The efficiency at night is 50% more than at day. If A completed a work in 30 days by working in day shift then in how many days A will complete it in night shift?
In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement 1: All dawn are day. Statement 2: No day is a night. Conclusion I: No night is a day. Conclusion II: Some dawn are night.