Advertisements
Advertisements
Question
A, B and C are three living organisms. The organism A is a unicellullar fungus which can live without air. It is used in the commercial production of an organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is a tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes R and air-tubes S in its body.
(a) What are organisms (i) A (ii) B, and (iii) C?
(b) Name (i) P (ii) Q (iii) R, and (iv) S.
(c) Which organism/organisms undergo aerobic respiration?
(d) Which organism/organisms undergo anaerobic respiration?
Solution
(a) (i) Organism A is yeast.
(ii) Organism B is Amoeba.
(iii) Organism C is mosquito.
(b) (i) P is alcohol.
(ii) Q is the cell membrane because Amoeba breathes through the cell membrane.
(iii) R is spiracle.
(iv) S is tracheae.
(c) Organisms B and C undergo aerobic respiration.
(v) Organism A, i.e. yeast, undergoes anaerobic respiration.
APPEARS IN
RELATED QUESTIONS
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
What is the other name of wind-pipe?
Name the type of respiration in which the end product is:
Lactic acid
Give one example where such a respiration can occur.
What is meant by aquatic animals and terrestrial animals?
Why do fishes die when taken out of water?
Explain how, it would benefit deep sea divers if humans also had gills.
Consider the following chemical reactions which take place in different organisms/tissues under various conditions:
(i) Glucose → Respiration ">Ethanol + Carbon dioxide + Energy
(ii) Glucose→ Respiration ">Carbon dioxide + Water + Energy
(iii) Glucose → Respiration "> Lactic acid + Energy
(a) Name one organism which respires according to equation (i) above.
(b) Name one organism which respires according to equation (ii) above.
(c) When and where does respiration represented by equation (iii) above take place?
(d) Which equation/equations represent aerobic respiration?
(e) Which equation/equations represent anaerobic respiration?
(f) Which of the above reactions produces the maximum amount of energy?
When a person breathes in the air, the air enters into his body through an organ A having two holes B in it. The air then passes through the pharynx and larynx and enters into tube C. The tube C divides into two smaller tubes D at its lower end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes F have air-sacs G at their ends in which gaseous exchange takes place in the body of the person. What are A, B, C, D, E, F, and G?
It has been found that people living in very high mountains have many more red corpuscles in their blood than people living in plains. Which one of the following best accounts for this phenomenon?
Choose the odd one out in the following groups of four items each:
Trachea, Bronchus, Alveolus, Diaphragm
Choose the odd one out in the following groups of four items each:
Hairy, Moist, Nostril, Vocal cord
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 _____________.
Given below is an overall chemical reaction of a certain process:
C6H12O6 →LacticAcid+2ATP+Heat energy
Name the process.
Name the organs that bring about respiration.
Which of the following indicates the shift of oxyhaemoglobin dissociation curve due to change in ppC02 in blood?
____________ is the maximum amount of air that the lungs can hold after a maximum forceful inspiration.
What percent of oxygen is transported in a dissolved state by the plasma?
How much percent of C02 is transported in a dissolved form as carbonic acid?
What is common between extensive network of blood vessels around walls of alveoli and in glomerulus of nephron?
