Advertisements
Advertisements
प्रश्न
The breathing and respiration in woody stem of a plant takes place through:
विकल्प
Root hair
Lenticels
Closed stomata
Open stomata
उत्तर
Lenticels
In woody stems, the bark (outer covering of the stem) has lenticels for gaseous exchange.
APPEARS IN
संबंधित प्रश्न
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
The breakdown of pyruvate to give carbon dioxide, water, and energy takes place in ______.
What would be the consequences of a deficiency of haemoglobin in our bodies?
Name the pores in a leaf through which respiratory exchange of gases takes place.
Define breathing. State the differences between breathing and respiration.
Why do the walls of trachea not collapse when there is less air in it?
Which of the following is the correct sequence of air passage during inhalation?
(a) nostrils → larynx → pharynx → trachea → lungs
(b) nasal passage → trachea → pharynx → larynx → alveoli
(c) larynx → nostrils → pharynx → lungs
(d) nostrils → pharynx → larynx → trachea → alevoli
Which of the following statements are true about respiration?
(i) during inhalation, ribs move inward and diaphragm is raised.
(ii) the gaseous exchange takes place in the alveoli.
(iii) haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) alveoli increase surface area of the exchange of gases
Which of the following is most likely to have a much higher breathing rate?
In cockroaches, air enters the body through:
Answer this question.
Name the organ of respiration in fishes.
Choose the odd one out in the following groups of four items each:
Trachea, Bronchus, Alveolus, Diaphragm
Choose the odd one out in each of the following groups of four items each:
Oxyhaemoglobin, Carbaminohaemoglobin, Hypoxia, Carboxyhaemoglobin
Name the body structure concerned with the given functional activity:
Provides actual diffusion of respiratory gases in the lungs.
State one function of the following:
Mitochondria
Answer the following question.
A gas is released during photosynthesis. Name the gas and also state the way by which the gas is evolved.
Complete the analogy.
Transport of CO2 by plasma : 7% :: Transport of CO2 by bicarbonate ions: ____________.
The major fraction of CO2 released during cellular respiration is transported by the blood to the lung capillaries ______
The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.
The function of KOH is to absorb ______.
Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?
