What are xylem vessels and tracheids?

What are xylem vessels and tracheids?
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Xylem vessels consist of series of elongated dead cells joined together forming end to end

tube like structure for conduction of water and salts
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An organised and differentiated cellular structure having cytoplasm but no nucleus is (a) vessels (b) xylem parenchyma (c) sieve tubes (d) tracheids.

Description : An organised and differentiated cellular structure having cytoplasm but no nucleus is (a) vessels (b) xylem parenchyma (c) sieve tubes (d) tracheids.

Last Answer : (c) sieve tubes

The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids.

Description : The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids.

Last Answer : (d) tracheids.

An organised and differentiated cellular structure having cytoplasm but no nucleus is (a) vessels (b) xylem parenchyma (c) sieve tubes (d) tracheids.

Description : An organised and differentiated cellular structure having cytoplasm but no nucleus is (a) vessels (b) xylem parenchyma (c) sieve tubes (d) tracheids.

Last Answer : (c) sieve tubes

The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids

Description : The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids

Last Answer : d) tracheids.

Gymnosperms are also called soft wood spermatophytes because they lack (a) cambium (b) phloem fibres (c) thick-walled tracheids(d) xylem fibres

Description : Gymnosperms are also called soft wood spermatophytes because they lack (a) cambium (b) phloem fibres (c) thick-walled tracheids(d) xylem fibres

Last Answer : (d) xylem fibres.

Conifers differ from grasses in the (a) formation of endosperm before fertilization (b) production of seeds from ovules (c) lack of xylem tracheids (d) absence of pollen tubes.

Description : Conifers differ from grasses in the (a) formation of endosperm before fertilization (b) production of seeds from ovules (c) lack of xylem tracheids (d) absence of pollen tubes.

Last Answer : (a) formation of endosperm before fertilization

Gymnosperms are also called soft wood spermatophytes because they lack (1) Xylem fibres (2) Cambium (3) Phloem fibres (4) Thick-walled tracheids

Description : Gymnosperms are also called soft wood spermatophytes because they lack (1) Xylem fibres (2) Cambium (3) Phloem fibres (4) Thick-walled tracheids

Last Answer : (4) Thick-walled tracheids

Tyloses are: (a) Lactiferous channels (b) Secretory cells (c) Sieve plates (d) Tracheal plugs plugging the lumen of vessels and tracheids

Description : Tyloses are: (a) Lactiferous channels (b) Secretory cells (c) Sieve plates (d) Tracheal plugs plugging the lumen of vessels and tracheids

Last Answer : Ans. ((d))

Which of the following statements is true? (a) Vessels are multicellular with wide lumen. (b) Tracheids are multicellular with narrow lumen. (c) Vessels are unicellular with narrow lumen. (d) Tracheids are unicellular with wide lumen.

Description : Which of the following statements is true? (a) Vessels are multicellular with wide lumen. (b) Tracheids are multicellular with narrow lumen. (c) Vessels are unicellular with narrow lumen. (d) Tracheids are unicellular with wide lumen.

Last Answer : (a) Vessels are multicellular with wide lumen

Which of the following statements is true? (a) Vessels are multicellular with wide lumen. (b) Tracheids are multicellular with narrow lumen. (c) Vessels are unicellular with narrow lumen. (d) Tracheids are unicellular with wide lumen.

Description : Which of the following statements is true? (a) Vessels are multicellular with wide lumen. (b) Tracheids are multicellular with narrow lumen. (c) Vessels are unicellular with narrow lumen. (d) Tracheids are unicellular with wide lumen.

Last Answer : (a) Vessels are multicellular with wide lumen.

Why tracheids are less efficient than vessels in conduction

Description : Why tracheids are less efficient than vessels in conduction

Last Answer : Ans: Tracheids do not have uniform diameter, overlapped on each other at the ends and have solid cross walls. Vessels have uniform diameter, perforated cross walls and their elements are not overlapped but arranged one above the other. 

The xylem vessels of plants are part of which tissue ?

Description : The xylem vessels of plants are part of which tissue ?

Last Answer : The xylem vessels of plants are part of the complex tissue.

A column of water within xylem vessels of tall trees does not break under its weight because of (a) lignification of xylem vessels (b) positive root pressure (c) dissolved sugars in water (d) tensile strength of water.

Description : A column of water within xylem vessels of tall trees does not break under its weight because of (a) lignification of xylem vessels (b) positive root pressure (c) dissolved sugars in water (d) tensile strength of water.

Last Answer : (d) tensile strength of water.

The balloon-shaped structures called tyloses (a) originate in the lumen of vessels (b) characterise the sapwood (c) are extensions of xylem parenchyma cells into vessels (d) are linked to the ascent of sap through xylem vessels.

Description : The balloon-shaped structures called tyloses (a) originate in the lumen of vessels (b) characterise the sapwood (c) are extensions of xylem parenchyma cells into vessels (d) are linked to the ascent of sap through xylem vessels.

Last Answer : (c) are extensions of xylem parenchyma cells into vessels

Vascular bundles in monocotyledons are considered closed because (a) there are no vessels with perforations (b) xylem is surrounded all around by phloem (c) a bundle sheath surrounds each bundle (d) cambium is absent.

Description : Vascular bundles in monocotyledons are considered closed because (a) there are no vessels with perforations (b) xylem is surrounded all around by phloem (c) a bundle sheath surrounds each bundle (d) cambium is absent.

Last Answer : (d) cambium is absent.

Which of the following plant cells will show totipotency? (a) Sieve tubes (b) Xylem vessels (c) Meristem (d) Cork cells

Description : Which of the following plant cells will show totipotency? (a) Sieve tubes (b) Xylem vessels (c) Meristem (d) Cork cells

Last Answer : (c) Meristem

Which of the following plant cells will show totipotency? (a) Sieve tubes (b) Xylem vessels (c) Meristem (d) Cork cells

Description : Which of the following plant cells will show totipotency? (a) Sieve tubes (b) Xylem vessels (c) Meristem (d) Cork cells

Last Answer : (c) Meristem

Wood without xylem vessels are called as

Description : Wood without xylem vessels are called as

Last Answer : Wood without xylem vessels are called as – Soft wood

Name a gymnosperm with vessels in the Xylem.

Description : Name a gymnosperm with vessels in the Xylem. 

Last Answer : Ans: Gnetum. 

Function of tracheids -Biology

Description : Function of tracheids -Biology

Last Answer : answer:

Why are vessel elements better than tracheids? -Biology

Description : Why are vessel elements better than tracheids? -Biology

Last Answer : answer:

Why are vessel elements better than tracheids? -Biology

Description : Why are vessel elements better than tracheids? -Biology

Last Answer : answer:

Why are tracheids not efficient in transporting water up the plant? -Biology

Description : Why are tracheids not efficient in transporting water up the plant? -Biology

Last Answer : answer:

Why are tracheids not efficient in transporting water up the plant? -Biology

Description : Why are tracheids not efficient in transporting water up the plant? -Biology

Last Answer : answer:

What are tracheids?

Description : What are tracheids?

Last Answer : Need answer

The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of (a) weak gravitational pull (b) transpiration pull (c) lignified thick walls (d) cohesion and adhesion

Description : The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of (a) weak gravitational pull (b) transpiration pull (c) lignified thick walls (d) cohesion and adhesion

Last Answer : (d) cohesion and adhesion.

Transport of food material in higher plants takes place through (a) companion cells (b) transfusion tissue (c) tracheids (d) sieve elements.

Description : Transport of food material in higher plants takes place through (a) companion cells (b) transfusion tissue (c) tracheids (d) sieve elements.

Last Answer : (d) sieve elements.

Tracheids differ from other tracheary elements in (a) having Casparian strips (b) being imperforate (c) lacking nucleus (d) being lignified.

Description : Tracheids differ from other tracheary elements in (a) having Casparian strips (b) being imperforate (c) lacking nucleus (d) being lignified.

Last Answer : (b) being imperforate

Transport of food material in higher plants takes place through (a) companion cells (b) transfusion tissue (c) tracheids (d) sieve elements.

Description : Transport of food material in higher plants takes place through (a) companion cells (b) transfusion tissue (c) tracheids (d) sieve elements.

Last Answer : d) sieve elements.

Tracheids differ from other tracheary elements in (a) having Casparian strips (b) being imperforate (c) lacking nucleus (d) being lignified

Description : Tracheids differ from other tracheary elements in (a) having Casparian strips (b) being imperforate (c) lacking nucleus (d) being lignified

Last Answer : (b) being imperforate

2. How many types of elements together make up the xylem tissue? Name them. -Science

Description : 2. How many types of elements together make up the xylem tissue? Name them. -Science

Last Answer : The xylem tissue is made up of four main elements, namely: ➢ Vessels ➢ Tracheids ➢ Xylem fibres ➢ Xylem parenchyma

Green colour of plants is due to the presence of (a) Chlorophyll (b) Sugar (c) Mitochondria (d) Xylem

Description : Green colour of plants is due to the presence of (a) Chlorophyll (b) Sugar (c) Mitochondria (d) Xylem

Last Answer : Ans:(a)

The tissue that is involved in the transport of food material in plants is called: (a) parenchyma (b) phloem (c) sclerenchyma (d) xylem

Description : The tissue that is involved in the transport of food material in plants is called: (a) parenchyma (b) phloem (c) sclerenchyma (d) xylem

Last Answer : Ans:(b)

A dicot root shows (a) Large pith (b) Reduced or no pith (c) Endarch xylem (d) Conjoint bundles

Description : A dicot root shows (a) Large pith (b) Reduced or no pith (c) Endarch xylem (d) Conjoint bundles

Last Answer : Ans:(b)

Which tissue is responsible for the passage of water in plants? (a) Sclerenchyma (b) Xylem (c) Phloem (d) Collenchynatous cells

Description : Which tissue is responsible for the passage of water in plants? (a) Sclerenchyma (b) Xylem (c) Phloem (d) Collenchynatous cells

Last Answer : Ans:(b)

Mention the differences between xylem and phloem.

Description : Mention the differences between xylem and phloem.

Last Answer : Xylem 1) It conducts water and minerals from roots to other parts of the plant body Phloem 1) It transports food from leaves to other regions.

Why are xylem and phloem called vascular bundles?

Description : Why are xylem and phloem called vascular bundles?

Last Answer : Since xylem and phloem occur together they are called vascular bundles.

Name the four types of xylem cells. OR what is xylem composed of?

Description : Name the four types of xylem cells. OR what is xylem composed of?

Last Answer : Xylem tissue is composed of:a) xylem parenchyma b) xylem fibres c) xylem vessels and d) tracheids.

What is xylem?

Description : What is xylem?

Last Answer : Xylem is a vascular tissue which transports water and mineral absorbed by the roots to all the parts of the plant.

What are the differences between the transport of materials in xylem and phloem ? -Biology

Description : What are the differences between the transport of materials in xylem and phloem ? -Biology

Last Answer : Xylem Phloem 1. Xylem conducts water and dissolved minerals from roots to leaves and other parts. 1. Phloem conducts prepared food material from leaves to other parts of plant in dissolved ... increases the osmotic pressure that moves the material in the phloem to tissues which have less pressure

The xylem in plants are responsible for (i) transport of water (ii) transport of food (iii) transport of amino acids (iv) transport of oxygen -Biology

Description : The xylem in plants are responsible for (i) transport of water (ii) transport of food (iii) transport of amino acids (iv) transport of oxygen -Biology

Last Answer : The xylem in the plants is responsible for - i) transport of water. The Xylem vessel is a transport tissue present in vascular plants. The main function of xylem is to transport water from the roots to the shoots and leaves, but it also transports nutrient from one place to another.

Name the element(s) of xylem which (i) help in transport of water and minerals, (ii) stores food, and (iii) provides mechanical support -Biology 9th

Description : Name the element(s) of xylem which (i) help in transport of water and minerals, (ii) stores food, and (iii) provides mechanical support -Biology 9th

Last Answer : answer:

Who introduced the term xylem? -Biology

Description : Who introduced the term xylem? -Biology

Last Answer : The word "xylem" is derived from the Greek word ξύλον (xylon), meaning "wood"; the best-known xylem tissue is wood, though it is found throughout a plant. The term was introduced by Carl Nägeli in 1858.

Name a living cell in xylem. -Biology

Description : Name a living cell in xylem. -Biology

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Where is endarch xylem present in a plant body? -Biology

Description : Where is endarch xylem present in a plant body? -Biology

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Definition of exarch xylem. -Biology

Description : Definition of exarch xylem. -Biology

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What is an endarch xylem? -Biology

Description : What is an endarch xylem? -Biology

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Cohesion and adhesion in the ascent of xylem sap. -Biology

Description : Cohesion and adhesion in the ascent of xylem sap. -Biology

Last Answer : answer:

What factors determine the ascent of xylem sap in a plant? -Biology

Description : What factors determine the ascent of xylem sap in a plant? -Biology

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What is the function of xylem fibres. -Biology

Description : What is the function of xylem fibres. -Biology

Last Answer : The xylem is the vascular tissue responsible for the upward conduction of water and nutrients from the roots. The xylem tissue moves water and nutrients to various parts of the plant such as shoots and leaves. Its major components include xylem parenchyma, xylem fibers, tracheids, and xylem vessels