मराठी

The breathing and respiration in woody stem of a plant takes place through: - Science

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प्रश्न

The breathing and respiration in woody stem of a plant takes place through:

पर्याय

  • Root hair

  • Lenticels

  • Closed stomata

  • Open stomata

MCQ
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उत्तर

Lenticels

In woody stems, the bark (outer covering of the stem) has lenticels for gaseous exchange.

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पाठ 1: Life Processes - Exercise 2 [पृष्ठ ४९]

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लखमीर सिंह Biology (Science) [English] Class 10
पाठ 1 Life Processes
Exercise 2 | Q 69 | पृष्ठ ४९

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

How are the lungs designed in human beings to maximize the area for exchange of gases?


Out of photosynthesis and respiration in plants, which process occurs:
(a) all the time?
(b) only at daytime?


During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:


The two organisms which breath only through their moist skin are:


Which of the following is most likely to have a much higher breathing rate?


In cockroaches, air enters the body through:


Some sugar solution is taken in a test-tube and a little of substance X in powder form is added to it. The mouth of test-tube is closed with a cork and allowed to stand for sometime. On opening the cork, a characteristic smell of substance Y is obtained and a gas Z is also observed to be formed. The gas Z extinguishes a burning matchstick.

(a) What could be (i) X, (ii) Y, and (iii) Z?

(b) What is the process of converting sugar into substance Y by the action of X known as?

(c) What type of respiration is exhibited by X in the above process?


With which human organ system (or human systems) is alveoli associated?


Answer this question.

Name the organ of respiration in fishes.


Give Suitable Explanation for the Following :

Why do you shiver and why do your teeth chatter when it is very cold in winter?


Why is respiration essential for life?


Identify the CORRECT sequence of events for the transport of respiratory gases.


Complete the analogy.

Transport of CO2 by plasma : 7% :: Transport of CO2 by bicarbonate ions: ____________.


The partial pressure of oxygen of blood in pulmonary capillaries is i ______  mrnHg while in alveolar air it is ii ______ mmHg.


Which is the correct sequence of air passage during inhalation?


How does aerobic respiration differ from anaerobic respiration?


Explain the three pathways of breakdown in living organisms.


Breathing is a process that

  1. provides O2 to the body.
  2. breaks down food to release energy.
  3. helps the body to get rid of CO2.
  4. produces water in the cells.

Which of the following gives the correct combination of functions of breathing?


With the reference to four gases CO2, CO, Cl2 and O2, which one of the options in the table is correct?


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