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प्रश्न
Name a waste gas released by the plants only during the night time.
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उत्तर
Carbon dioxide is released only during the night because carbon dioxide produced during respiration in completely used up by the plant itself in photosynthesis.
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संबंधित प्रश्न
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.
Correct the following statements by changing the underlined words:
The normal pale yellow colour of the urine is due to the presence of the pigment Melanin.
Name the two waste products of the human body which are produced in the body cells.
What does the bladder in our body do?
Name the various organs of the human excretory system.
The excretory organs in an earthworm are:
(a) nephridia
(b) nephrons
(c) raphides
(d) ureters
Why is excretion necessary in living beings?
Name the following:
The outer region of kidney containing the Bowman's capsule.
Given below is a set of five terms. Rewrite the terms in their correct order so as to be in logical sequence.
Afferent arteriole, renal vein, secondary capillary network, glomerulus, efferent arteriole.
Choose the correct answer:
Composition of extracellular fluid is regulated by ___________
Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:
Name the functional units of the kidneys.
Study the diagram given below and then answer the questions that follow:
 |
- Name the region in the kidney where the above structure is present?
- Name the parts labelled 1, 2, 3 and 4.
- Name the stages involved in the formation of urine.
- What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.
Given below is a simple diagram of the human kidney cut open longitudinally. Answer the following questions:
c
(v) Write two differences in the composition of the blood flowing through blood vessels A and B.
Complete the following sentence with appropriate word:
Human kidney is made up of ______.
State the Location: Medulla of Kidney
Choose the Odd One Out:
Choose the correct option.
Which one of the following organisms excrete waste through nephridia?
Answer the following question.
Amphibian tadpole can afford to be ammonotelic. Justify.
Osmoregulation maintains the osmolarity of blood at about ______.
The mode of excretion of nitrogenous wastes like ammonia which takes place by simple diffusion is called ______.
