Advertisements
Advertisements
प्रश्न
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?
उत्तर
(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
संबंधित प्रश्न
State whether the statement is true or false:
Aquatic animals breathe at a slower rate than the terrestrial animals.
How are oxygen and carbon dioxide transported in human beings?
The breakdown of pyruvate to give carbon dioxide, water, and energy takes place in ______.
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
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
The trachea divides into tow tubes at its lower end. What is the name of these tubes?
Describe the process of respiration in the following part of a plant:
Root
One of the following animals does not use tracheae as the respiratory organs. This animal is:
One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is:
What happens to the glucose which enters the nephron tubule alongwith the filtrate?
Differentiate between
External respiration and Internal respiration
Name the body structure concerned with the given functional activity:
Combines with the oxygen in the lungs.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Alveoli and _____________.
State one function of the following:
Pleural fluid
With which of the following haemoglobin combines to form carboxyhaemoglobin?
How much percent of C02 is transported in a dissolved form as carbonic acid?
Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:
On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. They observed that the air coming out of their mouth looked like smoke. They were amused and wondered how it happened. Help them find the answer.
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.
