Advertisements
Advertisements
प्रश्न
Name a waste gas released by the plants only during the daytime.
Advertisements
उत्तर
Oxygen is released only during the daytime. This is because oxygen is produced by photosynthesis only in the presence of sunlight.
APPEARS IN
संबंधित प्रश्न
The Biological/technical term for The removal of nitrogenous wastes from the body
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.
What is the function of excretory system in humans?
The procedure of cleaning the blood of a person by using a kidney machine is known as:
(a) ketolysis
(b) hydrolysis
(c) dialysis
(d) photolysis
The organs A of a person have been damaged completely due to which too much of a poisonous waste material B has started accumulating in his blood, making it dirty. In order to save this person's life, the blood from an artery in the person's arm is made to flow into long tubes made of substance E which are kept in coiled form in a tank containing solution F. This solution contains three materials G, H and I in similar proportions to those in normal blood. As the person's blood passes through long tubes of substance E, most of the wastes present in it go into solution. The clean blood is then put back into a vein in the arm of the person for circulation.
(a) What are organs A?
(b) Name the waste substance B.
(c) What are (i) E, and (ii) F?
(d) Name G, H and I.
(e) What is the process described above known as?
State if the following statement is true or false. Correct the statement if it is false.
Liver produces bile pigments from the hemoglobin of broken RBCs.
What is dialysis? Under what condition is it carried out?
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1 to 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:
Where does ultrafiltration take place?
Choose the odd one out in the following serie:
Column of Bertini, minora calyces, brain.
Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:
Write two differences in composition of the blood flowing through the blood vessels, 'A' and 'B'.
Explain the Term: Glomerulus
Name the Following
The substance found in excess in the urine of a diabetic patient.
Write the functional activity of the following structure: Nephron
Choose the correct option.
The minor calyx _______.
Answer the following question.
Name any one guanotelic organism.
Answer the following question.
Amphibian tadpole can afford to be ammonotelic. Justify.
The mode of excretion of nitrogenous wastes like ammonia which takes place by simple diffusion is called ______.
Explain the importance of soil for plant growth.
Give two examples of the following:
Water-soluble vitamins
Name the following;
Three nitrogenous wastes of our body.
