0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why sapwood is wetter softer then heartwood?
a.) SapwoodThe sapwood is the younger, softer outer portion of a tree that lies between the heartwood and the cambium (formative layer just under the bark) As comparatively new wood, sapwood is less durable and more permeable than heartwood.While a floor purely of sapwood may be beautiful and smoother than heartwood, the softness and permeability of the sapwood makes it expand and contract easily, which can cause it to warp in certain conditions. This weakness also manifests differently in various tree species; some have sapwood that is strong and durable, others have weak, soft sapwood that is not appropriate for wood floors. Many times, sapwood is graded higher than heartwood because it is smoother and less prone to knots and blemishes; the highest-grade sapwood is virtually free of any imperfections. Coloration of sapwood ranges from white to light and yellow blonde tones. HeartwoodHeartwood is the older, harder central portion of a tree. It usually contains deposits of various materials that frequently give it a darker color than sapwood. Denser and more durable than sapwood, heartwood is found primarily in aged trees.Heartwood is generally darker than sapwood, and doesn't have the same expansion and contraction problems that beset some sapwood. It makes a great wood floor because of its hardness and strength, and its resistance to many weather conditions. The hardness of heartwood, like sapwood, depends on the tree species and age of the tree.
Is a xylem cell a plant or human cell?
Its part of a plant cell, a tube that carries energy.-----------------A Xylem cell is a plant cell. The xylem is the woody part of the tree. It is all of the cells between the pith in the center out to the cambium. The xylem consists of the sapwood and the heartwood. There is no one cell called a "xylem cell". Any cell in the xylem portion of the tree could be called a xylem cell.The vessels and/or tracheids in the outer few growth rings in the sapwood carries sap or water (with dissolved minerals) up to the leaves. The inner bark cells carry the food made by the leaves down the tree for use and for storage. The ray cells transport the food radially into the tree for growth. Also the rays cells can transport stored food radially outward in times of shortages or special needs. (like repairing damage by weather or disease or insects or animals, etc.)Phloem
As sapwood ages it dies and becomes?
as sapwood dies it becomes all mossy and sticky
Is a xylem tissue organ or a structure?
Xylem is a tissue found in plants.It conducts minerals and water
To what part of the human circulatory system are xylem and phloem most similar?
Xylem and phloem are the same because they transport materials through out the plant.
In a woody dicot stem the xylem is divided into?
Sapwood and Heartwood.
The lighter wood in a tree trunk containing xylem cells that conduct water?
sapwood
Why sapwood is wetter softer then heartwood?
a.) SapwoodThe sapwood is the younger, softer outer portion of a tree that lies between the heartwood and the cambium (formative layer just under the bark) As comparatively new wood, sapwood is less durable and more permeable than heartwood.While a floor purely of sapwood may be beautiful and smoother than heartwood, the softness and permeability of the sapwood makes it expand and contract easily, which can cause it to warp in certain conditions. This weakness also manifests differently in various tree species; some have sapwood that is strong and durable, others have weak, soft sapwood that is not appropriate for wood floors. Many times, sapwood is graded higher than heartwood because it is smoother and less prone to knots and blemishes; the highest-grade sapwood is virtually free of any imperfections. Coloration of sapwood ranges from white to light and yellow blonde tones. HeartwoodHeartwood is the older, harder central portion of a tree. It usually contains deposits of various materials that frequently give it a darker color than sapwood. Denser and more durable than sapwood, heartwood is found primarily in aged trees.Heartwood is generally darker than sapwood, and doesn't have the same expansion and contraction problems that beset some sapwood. It makes a great wood floor because of its hardness and strength, and its resistance to many weather conditions. The hardness of heartwood, like sapwood, depends on the tree species and age of the tree.
What is the common name for secondary xylem?
primary xylem is primary in nature & is derived from procambium. But secondary xylem is secondary in nature and derived from fascicular cambium and interfascicular cambium. Primary xylem is differentiated into protoxylem and metaxylem, but secondary xylem has no such differentiation. In primary xylem vessels and tracheids are long and narrow, and vessels don't have tyloses, but in secondary xylem, vessels are blocked by tyloses, and vessels and tracheids are wider and shorter. Xylem fibres are more abundant in secondary xylem , and found in small numbers in primary xylem. Also unlike in primary xylem, secondary xylem has differentiated into sapwood & heartwood.
What is the function of the sapwood?
the function of the sapwood is most recent in annual rings of a tree
Is a xylem cell a plant or human cell?
Its part of a plant cell, a tube that carries energy.-----------------A Xylem cell is a plant cell. The xylem is the woody part of the tree. It is all of the cells between the pith in the center out to the cambium. The xylem consists of the sapwood and the heartwood. There is no one cell called a "xylem cell". Any cell in the xylem portion of the tree could be called a xylem cell.The vessels and/or tracheids in the outer few growth rings in the sapwood carries sap or water (with dissolved minerals) up to the leaves. The inner bark cells carry the food made by the leaves down the tree for use and for storage. The ray cells transport the food radially into the tree for growth. Also the rays cells can transport stored food radially outward in times of shortages or special needs. (like repairing damage by weather or disease or insects or animals, etc.)Phloem
As sapwood ages it dies and becomes?
as sapwood dies it becomes all mossy and sticky
How many types of elements together make up the xylem tissue?
In Angiosperms , it is xylem vessels ( proto and meta xylem together ) , Xylem sclerenchyma and xylem parenchyma ; together form Xylem tissue ( That is why xylem is called a compound tissue ). In Gymnosperms , xylem vessels are replaced by Xylem tracheids . All other tings are almost the same .
What is heartwood surrounded by?
sapwood
How thick is the cambium layer on a tree?
While there is no set number, the cambium is usually a couple cells to a few (4 or 6 or so) Its location is between the sapwood of the wood part (xylem) and the inner bark layer (phloem). The cambium consists of specialized cells called "initials" which produce xylem cells to the inside or phloem cells to the outside. Since the bark of a tree is thinner than the wood, the cambium produces more xylem cells.
Is a xylem tissue organ or a structure?
Xylem is a tissue found in plants.It conducts minerals and water
To what part of the human circulatory system are xylem and phloem most similar?
Xylem and phloem are the same because they transport materials through out the plant.
