Answer
Verified
478.8k+ views
Hint: Lenticels are aerating pores which are formed in the cork in the tree.
Complete answer:
Lenticels are the small pores which are prominent in the cork through which the gaseous exchange takes place. Lenticels are often found in old dicot stems, the main function is known to be gas exchange. These are formed as a result of phellogen action. Lenticels appear as care on the stem surface and there are radial rows of cells present. These cells are thin-walled and are known as complementary cells.
Additional information:
- The increase in the thickness of a stem due to the activity of cambium and the cork cambium is known as the secondary growth.
-At the time of secondary growth the parenchymatous cells that are present in between the casual bundle form a strip of cambium known as the intrafascicular cambium.
-The cork cambium or the phellogen is developed from the outermost layer of the cortex, phelloderm or secondary cortex is produced on the inner side and on the outer side is phellem or cork. These 3 collectively are known as periderm.
So, the correct option is ‘gaseous exchange’.
Notes:
- The activity of cambium is not uniform and this leads to the formation of annual rings and different types of woods.
-In temperate conditions, the cambium is more active in spring and the wild form is the springwood. On the other hand, the activity of cambium is lesser during winter. The wood formed in dry summer or very cold winter is the autumn wood. Both these woods form a single growth/ annual ring.
Complete answer:
Lenticels are the small pores which are prominent in the cork through which the gaseous exchange takes place. Lenticels are often found in old dicot stems, the main function is known to be gas exchange. These are formed as a result of phellogen action. Lenticels appear as care on the stem surface and there are radial rows of cells present. These cells are thin-walled and are known as complementary cells.
Additional information:
- The increase in the thickness of a stem due to the activity of cambium and the cork cambium is known as the secondary growth.
-At the time of secondary growth the parenchymatous cells that are present in between the casual bundle form a strip of cambium known as the intrafascicular cambium.
-The cork cambium or the phellogen is developed from the outermost layer of the cortex, phelloderm or secondary cortex is produced on the inner side and on the outer side is phellem or cork. These 3 collectively are known as periderm.
Lenticels in a plant
So, the correct option is ‘gaseous exchange’.
Notes:
- The activity of cambium is not uniform and this leads to the formation of annual rings and different types of woods.
-In temperate conditions, the cambium is more active in spring and the wild form is the springwood. On the other hand, the activity of cambium is lesser during winter. The wood formed in dry summer or very cold winter is the autumn wood. Both these woods form a single growth/ annual ring.
Recently Updated Pages
How is abiogenesis theory disproved experimentally class 12 biology CBSE
What is Biological Magnification
Fill in the blanks with suitable prepositions Break class 10 english CBSE
Fill in the blanks with suitable articles Tribune is class 10 english CBSE
Rearrange the following words and phrases to form a class 10 english CBSE
Select the opposite of the given word Permit aGive class 10 english CBSE
Trending doubts
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Change the following sentences into negative and interrogative class 10 english CBSE
Why is there a time difference of about 5 hours between class 10 social science CBSE
Explain the Treaty of Vienna of 1815 class 10 social science CBSE
Discuss the main reasons for poverty in India
Write a letter to the principal requesting him to grant class 10 english CBSE