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प्रश्न
Differentiate between
tannins and resins
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उत्तर
| Tannins | Resins | ||
| 1 | These are a group of complex compounds found in the bark and leaves. | 1 | These are the secretions of many plants like coniferous trees. |
| 2 | Its presence in tea leaves makes tea taste bitter. | 2 | It is used in the production of varnishes and adhesives and perfumes and incense. |
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संबंधित प्रश्न
What are the methods used by plants to get rid of excretory products?
_____________ 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) ______________.
What is the function of excretory system in humans?
Describe the mechanism of urine formation in human excretory system. Draw a labelled diagram to illustrate your answer.
Fill in the blank.
....................... are present in the stem of pine tree that make the pinewood strong and durable.
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:
Where is most water reabsorbed ?
Draw a labeled diagram of the human kidney as seen in a longitudinal section.
Complete the following sentence with appropriate word:
Human kidney is made up of ______.
Answer the following question.
Name any one guanotelic organism.
In order to maintain homeostasis or constant internal environment . ______' is essential.
