agra,ahmedabad,ajmer,akola,aligarh,ambala,amravati,amritsar,aurangabad,ayodhya,bangalore,bareilly,bathinda,bhagalpur,bhilai,bhiwani,bhopal,bhubaneswar,bikaner,bilaspur,bokaro,chandigarh,chennai,coimbatore,cuttack,dehradun,delhi ncr,dhanbad,dibrugarh,durgapur,faridabad,ferozpur,gandhinagar,gaya,ghaziabad,goa,gorakhpur,greater noida,gurugram,guwahati,gwalior,haldwani,haridwar,hisar,hyderabad,indore,jabalpur,jaipur,jalandhar,jammu,jamshedpur,jhansi,jodhpur,jorhat,kaithal,kanpur,karimnagar,karnal,kashipur,khammam,kharagpur,kochi,kolhapur,kolkata,kota,kottayam,kozhikode,kurnool,kurukshetra,latur,lucknow,ludhiana,madurai,mangaluru,mathura,meerut,moradabad,mumbai,muzaffarpur,mysore,nagpur,nanded,narnaul,nashik,nellore,noida,palwal,panchkula,panipat,pathankot,patiala,patna,prayagraj,puducherry,pune,raipur,rajahmundry,ranchi,rewa,rewari,rohtak,rudrapur,saharanpur,salem,secunderabad,silchar,siliguri,sirsa,solapur,sri-ganganagar,srinagar,surat,thrissur,tinsukia,tiruchirapalli,tirupati,trivandrum,udaipur,udhampur,ujjain,vadodara,vapi,varanasi,vellore,vijayawada,visakhapatnam,warangal,yamuna-nagar

Xylem and Phloem Examples and Types

Two types of transport system present in a vascular plant one are xylem and the other is phloem. Xylem helps to transport water from root to leaf and it also transports some nutrients. The word xylem is a Greek word that means wood. The xylem cells are long tracheary elements that are responsible for transporting water. Rackets and visual elements are classified based on their shape. Vessel elements are shorter and connected in tubes called vessels. Xylem is found in vascular bundles These vascular bundles are present in non-Woody plants. It is also present in the secondary xylem.
The primary xylem is formed during the growth of the procambium. It includes the metaxylem and protoxylem. The secondary xylem is formed in the time of secondary growth of vascular cambium.

Difference between xylem & pholem

Types of Xylem

1.Tracheids:- these are dead tube-like structures and mostly present in gymnosperm and angiosperm. It lacks protoplasm and has a lignified wall. It helps to transport minerals and water.
2.Vessels:- these are present in angiosperms. It has a long cylindrical structure and a tube-like appearance. They are dead and lack protoplasm. The cells are involved in the conduction of water minerals and provide mechanical support to the plant.
3.Xylem fibers:-nanofibers and the dead cell with lignified walls and also have a central lumen. Ab mechanical strength to the plant.
4.Xylem parenchyma:- It is the only living cell of the xylem. It stores starch and fat. It is responsible for the short-distance transportation of water.

Phloem

Phloem is the living tissue present in a vascular plant that is responsible for the transport of soluble organic compounds. The transport of sugar sucrose to the part of a plant is called translocation. The word phloem is derived from the Greek word phloios which means bark. Phloem consists of conducting cells known as sieve elements, parenchyma cells, companion cells, and supportive cells. Phloem tissue is made up of living cells or tissue which use turgor pressure in the form of ATP to transport sugar to the plant organ.
The phloem is made up of several components like
Sieve element:-these elements are narrow cell elongated which connect to form a sieve tube. They lack organelles such as ribosomes, cytosol, and Golgi Apparatus.
Sieve plates:-a plates are present between the sieve member cells. These are the large pores that help to exchange material between the cells. IT acts as a barrier to prevent loss of Sap when phloem is damaged.
Companion cells:-it's live element is associated with companions and in angiosperm and albuminous cells in a gymnosperm. Both sieve tube and companion cells are connected via plasmodesmata which allows the transfer of protein sucrose and other molecules to the sieve element.
Parenchyma:-These cells have flexible walls which are made up of cellulose. Its main function is fats, storage of starch, Protein.
Sclerenchyma:-It is the supportive tissue of the phloem. It provides stiffness and strength to the plant.

Difference between Xylem and Phloem

Phloem is the living tissue present in a vascular plant that is responsible for the transport of soluble organic compounds. The transport of sugar sucrose to the part of a plant is called translocation. The word phloem is derived from the Greek word phloios which means bark. Phloem consists of conducting cells known as sieve elements, parenchyma cells, companion cells, and supportive cells. Phloem tissue is made up of living cells or tissue which use turgor pressure in the form of ATP to transport sugar to the plant organ.
[Image 2 – Difference between Xylem and Phloem]


Xylem and phloem are quite different from each other. Here are some basic differences between xylem and phloem.


1. Xylems are tubular-shaped structures with an absence of walls. Whereas phloem is an illuminated and tubular structure with the presence of a wall.
2. Xylem is located at the center of the vascular bundle whereas phloem is located outside of the vascular bundle.
3. Xylem fibers are smaller whereas phloem fibers are larger.
4. Xylem are present in root stem and leaf whereas phloem is present in stem and leaf which later transports and grows into seed, root, and fruit.
5. The movement of the xylem is unidirectional whereas the movement of phloem is bidirectional.
6. Xylem lives with dead cells whereas phloem lives with cytoplasm but without a nucleus.
7. Xylem contains tracheids, vessel elements, xylem parenchyma, xylem sclerenchyma and xylem fibers whereas phloem contains companion cells, sieve tubes, phloem fibers, bast fibers, and phloem parenchyma.
8. Xylem from vascular bundle with phloem whereas phloem form vascular bundles with xylem.
9. Xylem provides mechanical strength to the plant and also helps to straighten the stem. Phloem helps to translocate the sugar by the photosynthetic area to storage organs like root, bulb, and tubers.
10. Xylem is responsible for replacing the total amount of water loss molecules through respiration and photosynthesis whereas phloem is responsible for transporting mRNAs and protein for the plant.

 

iacst

aakash-app

 

Talk to our expert
By submitting up, I agree to receive all the Whatsapp communication on my registered number and Aakash terms and conditions and privacy policy