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प्रश्न
What gaseous waste products are excreted by plants?
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उत्तर
Carbon dioxide, water vapour and oxygen are the main gaseous waste products excreted by plants.
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संबंधित प्रश्न
Match structures given in Column I with functions given in Column II.
| Column I | Column II | ||
| (i) | Stomata | (a) | Absorption of water |
| (ii) | Xylem | (b) | Transpiration |
| (iii) | Root hairs | (c) | Transport of food |
| (iv) | Phloem | (d) | Transport of water |
| (e) | Synthesis of carbohydrates |
The given diagram represents a nephron and its blood supply. Study the diagram and answer the following questions:
(i) Label parts 1, 2, 3 and 4.
(ii) State the reason for the high hydrostatic pressure in the glomerulus.
(iii) Name the blood vessel which contains the least amount of urea in this diagram.
(iv) Name the two main stages of urine formation.
(v) Name the part of the nephron which lies in the renal medulla.
Name the basic filtration unit present in the kidney.
Blood in the renal artery or renal vein (Which one has more urea ?)
Name a waste gas released by the plants only during the night time.
A dialysis machine contains long tubes coiled in a tank containing dialysing solution Of what substance are the tubes made?
Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form.
Urine is devoid of blood cells.
Differentiate between
excretion and transpiration
In humans, urea is formed in
Name the following:
The outer region of kidney containing the Bowman's capsule.
Name the following:
The vein in which urea concentration is maximum
Differentiate between the following pairs of term :
Renal pelvis and renal papilla
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1to 8 are as follows:
1. Afferent arteriole from renal artery
2. Efferent arteriole
3. Bowman's capsule
4. Glomerulus
5. Proximal convoluted tubule with blood capillaries
6. Distal convoluted tubule with blood capillaries
7. Collecting tubule
8. U-shaped loop of Henle
Study the diagram and answer the question that follow:
Which structure (normally) contains the lowest concentration of glucose?
Study the diagram given alongside and then answer the question that follow:
What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.
Explain the Term: Glomerulus
Give Technical Term:
The organ which filters out urea and uric acid from the bloodstream.
Choose the correct option.
What is micturition?
The product of the process of deamination is ______.
The statement given below is false. Rewrite the correct form of the statement by changing the underlined word.
The pigment urochrome is the breakdown product of the haemoglobin of dead RBCs.
