Advertisements
Advertisements
प्रश्न
What is the name of tissues which transport:
water and minerals in a plant?
उत्तर
In a plant, xylem transports water and minerals.
APPEARS IN
संबंधित प्रश्न
How are oxygen and carbon dioxide transported in human beings?
What would happen if all the green plants disappear from the earth?
Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.
Name two animals which breathe through gills.
Why do fishes die when taken out of water?
Why is diffusion insufficient to meet the oxygen requirements of large multicellular organisms like humans?
Internal respiration may be defined as:
The two organisms which breath only through their moist skin are:
In cockroaches, air enters the body through:
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?
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?
Veins and arteries carry blood. Which of these carry blood back to the heart?
Choose the odd one out in the following groups of four items each:
Hairy, Moist, Nostril, Vocal cord
Name the body structure concerned with the given functional activity:
Prevents food from entering the trachea during swallowing.
Given below is an overall chemical reaction of a certain process:
C6H12O6→LacticAcid+2ATP+Heat energy
Is this reaction applicable to animals or to plants or to both animals and plants?
Lack of oxygen in muscles often leads to cramps among cricketers. This results due to:
Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:
Which of the following statement(s) is (are) true about respiration?
- During inhalation, ribs move inward and the diaphragm is raised
- In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into the alveolar air
- Haemoglobin has a greater affinity for carbon dioxide than oxygen
- Alveoli increase surface area for the exchange of gases
The oxygen dissociation curve is a sigmoid curve and it shifts towards the right due to ______.
