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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
उत्तर
Lenticels
In woody stems, the bark (outer covering of the stem) has lenticels for gaseous exchange.
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संबंधित प्रश्न
Given below are the end products of different reactions involving glucose.
Write the reaction number in front of the following:
(i) Anaerobic reaction =
(ii) Reaction in the human muscles =
(iii) Aerobic respiration =
(iv) Reaction in the plant cells =
(v) Reaction in the liver
Given below is a square of letters in which are hidden different words related to respiration in organisms. These words may be present in any direction − upwards, downwards, or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square.
- The air tubes of insects
- Skeletal structures surrounding chest cavity
- Muscular floor of chest cavity
- Tiny pores on the surface of leaf
- Small openings on the sides of the body of an insect
- The respiratory organs of human beings
- The openings through which we inhale
- An anaerobic organism
- An organism with tracheal system
Name the pores in a leaf through which respiratory exchange of gases takes place.
Fill in the following blank with suitable word:
Gills are the breathing organs in ___________.
From where do the aquatic animals and terrestrial animals obtain oxygen for breathing and respiration?
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
Name the energy currency in the living organisms. When and where is it produced?
What type of repiration takes place in yeast?
Why is diffusion insufficient to meet the oxygen requirements of large multicellular organisms like humans?
When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of:
Choose the odd one out in the following groups of four items each:
Ethyl alcohol, Carbon dioxide, Starch, Oxygen
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Diaphragm and _____________.
State one function of the following:
Intercostal muscles
List the organs of Human respiratory system.
The major fraction of CO2 released during cellular respiration is transported by the blood to the lung capillaries ______
Match the correct answers with the type of respiration and respiratory substances.
| Respiration | Types of Substrates |
| A. Floating respiration | I. Proteins |
| B. Cytoplasmic respiration | II. Glucose |
| C. Protoplasmic respiration | III. Carbohydrates and fats |
List the similarities between aerobic and anaerobic respiration.
Visit a local doctor. Learn about the harmful effects of smoking. You can also collect material on this topic from other sources. You can seek help of your teacher or parents. Find out the percentage of people of your area who smoke. If you have a smoker in your family, confront him with the material that you have collected.
