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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
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 |
Draw a diagram of the human excretory system and label the various parts.
_____________ secreted by the (ii) _____________ lobe of the pituitary gland. If this hormone secretion is reduced, there is an increased production of urine. This disorder is called (iii) ____________. Sometimes excess glucose is passed with urine due to hyposecretion of another hormone called (iv) _____________ leading to the cause of a disease called (v) ______________.
Explain Selective reabsorption
What are the methods used by plants to get rid of their waste products?
With which human organ system (or human systems) is glomerulus associated?
If a patient is out on dialysis, he is most likely suffering from a severe ailment of the:
(a) circulatory system
(b) respiratory system
(c) excretory system
(d) digestive system
Answer the following in short.
List five waste products of plants.
Answer the following in detail.
Explain the process of transpiration. Describe some factors that affect it.
Fill in the blanks in the following passage to make it a meaningful description.
In a nephron, the ______ flows through the ______ under great pressure. The reason for this great pressure is that the ______ (outgoing) ______ is narrower than the ______ (incoming). This high pressure causes the ______ part of the blood to filter out from the ______ into the ______ capsule.
Choose the correct answer:
A condition of failure of kidney to form urea is called ____________
Choose the odd one out in the following serie:
Column of Bertini, minora calyces, brain.
Study the diagram given alongside and then answer the question that follow:
Name the stages involved in the formation of urine.
Name the Following
The process by which kidneys regulate the water content of the body.
Write the functional activity of the following structure: Aldosterone
Complete the diagram/chart with correct labels/ information. Write the conceptual details regarding it.
The number of ATP molecules required to produce one molecule of urea from the omithine cycle.
In order to maintain homeostasis or constant internal environment . ______' is essential.
When uric acid is produced in excess, it gets deposited in joints, resulting in ____________.
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.
