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How does a tree trunk exchange gases with the environment although it lacks stomata? - Biology

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प्रश्न

How does a tree trunk exchange gases with the environment although it lacks stomata?

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उत्तर

A tree trunk exchanges gas with the environment although it lacks the stomata because it has lenticels through which oxygen and other gas exchange occurs.

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अध्याय 14: Respiration in Plants - Exercises [पृष्ठ ८२]

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एनसीईआरटी एक्झांप्लर Biology [English] Class 11
अध्याय 14 Respiration in Plants
Exercises | Q 19. | पृष्ठ ८२

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

Name the most common respiratory substrate.


What happens to the energy liberated during respiration?


Do the plants respire all day and all night or only at night?


Name the following:

Energy currency of cell.


Name the following: 

Oxidative breakdown of carbohydrates to release energy.


Name the following: 

An organism which respires throughout life anaerobically.


How is tilling of the soil useful for the crops growing in it?


Fill in the blank : 

_________ are the openings found on older stems. 


Fill in the blank :

Glycolysis occurs in the _______of the cells.


Fill in the blank: 

_____________ is a respiratory substrate


How do the following structures help in respiration in plants?

Lenticels _____________


The following diagram refers to an apparatus which is used to demonstrate a physiological process:

What is the purpose of keeping boiled peas soaked in a disinfectant in test tube Y?


What do you understand by respiration?


Complete the following statement by choosing the correct alternative out of those given below.

Every living cell of the plant


Name the following:

The process of living beings which is concerned with the release of energy for use in the body.


The roots of a plant take up oxygen from the ______ trapped between the ______ particles.


Which gas present in the air is essential for aerobic respiration?


Observe the figure carefully and answer the following questions.

  1. In which jar, will the amount of CO2 be the highest and why?
  2. In which jar, will the amount of CO2 be the lowest and why?

A food stall owner was preparing dough for making bhaturas. He added a pinch of yeast and sugar to the dough and left it in a warm place. After few hours, the dough had risen. There was a sour smell too.

Why did the dough smell sour?


Mitochondria are called powerhouses of the cell. Which of the following observations support this statement?


Explain the term “Energy Currency”. Which substance acts as energy currency in plants and animals?


If a person is feeling dizzy, glucose or fruit juice is given immediately but not a cheese sandwich Explain.


When a substrate is being metabolized, why does not all the energy that released in one step. It is released in multiple steps.What is the advantage of step-wise release?


Respiration requires O2. How did the first cells on the earth manage to survive in an atmosphere that lacked O2?


It is known that red muscle fibres in animals can work for longer periods of time continuously. How is this possible?


RuBP carboxylase, PEP carboxylase, Pyruvate dehydrogenase, ATPase, cytochrome oxidase, Hexokinase, Lactate dehydrogenase.

Select/choose enzymes from the list above which are involved in

  1. Photosynthesis
  2. Respiration
  3. Both in photosynthesis and respiration

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