Description : (a) State the constituents of phloem ? (b) How does cork act as a protective tissue ? -Biology 9th
Last Answer : answer:
Description : What are the constituents of phloem?
Last Answer : Four types: Sieve Tubes Companion Cells Phloem fibres Phloem parenchyma
Description : 6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant? (A) 100% (B) 95% (C) 75% (D) 20%
Last Answer : (B) 95%
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)
Description : Phloem is a tissue found in (a) Reproductive organs of animals (b) Plants (c) Insects (d) Mammals
Description : Which tissue is responsible for the passage of water in plants? (a) Sclerenchyma (b) Xylem (c) Phloem (d) Collenchynatous cells
Description : Phloem is a tissue found in?
Last Answer : plants
Description : Primary phloem develops from?
Last Answer : provascular tissue
Description : Identify the two components of Phloem tissue that help in transportation of food in plants (a) Phloem parenchyma & sieve tubes (b) Sieve tubes & companion cell. (c) Phloem parenchyma & companion cell. (d) Phloem fibres and sieve tubes
Last Answer : (b) Sieve tubes & companion cell.
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.
Description : Why are xylem and phloem called vascular bundles?
Last Answer : Since xylem and phloem occur together they are called vascular bundles.
Description : State the function of a) sieve tubes b) sieve plate c) companion cells d) phloem fibres.
Last Answer : a) Sieve tubes: They play an important role in the conduction of food. b) Sieve plate: It allows the food to pass through the pores. c) Companion cells: They control the passage of food through the phloem. d) Phloem fibres: They provide tensile strength to the plant body.
Description : What is phloem composed of?
Last Answer : Phloem is composed of four types of cells. a) sieve tubes b) companion cells c) phloem fibres d) phloem parenchym
Description : What is phloem?
Last Answer : Phloem is a complex tissue which conducts food to different parts of the plant.
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
Description : Cell elements of phloem. -Biology
Description : What does phloem sap contain? -Biology
Description : What is the purpose of the phloem parenchyma cells? -Biology
Last Answer : Phloem parenchyma cells, called transfer cells and border parenchyma cells, are located near the finest branches and terminations of sieve tubes in leaf veinlets, where they also function in the transport of foods.
Description : Phloem fibres function? -Biology
Last Answer : Bast fibre (also called phloem fibre or skin fibre) is plant fibre collected from the phloem (the "inner bark", sometimes called "skin") or bast surrounding the stem of certain dicotyledonous plants. They support the conductive cells of the phloem and provide strength to the stem.
Description : What is the role of phloem in a vascular plant? -Biology
Last Answer : Phloem is responsible for transporting sugars, proteins, and other organic molecules in plants. Vascular plants are able to grow higher than other plants due to the rigidity of xylem cells, which support the plant.
Description : What are the types of phloem vessels in plants ?
Last Answer : 4 types of plant phloem vessels .
Description : What is phloem tissue ?
Last Answer : Phloem tissue is a group of tissues that are similar in function and origin but differ in shape and nature.
Description : Which cell of phloem accumulates callus in winter ?
Last Answer : : Calcium accumulates in the sival cells of phloem in winter.
Description : What is phloem parenchyma ?
Last Answer : : The phloem parenchyma is the parenchyma cells present in the phloem.
Description : In which of the following , phloem occurs in two patches ?
Last Answer : In which of the following , phloem occurs in two patches ? A. Maize B. Cucurbita C. Sunflower D. Dracaena
Description : Which are the first terrestrial plants to possess xylem and phloem?
Last Answer : Which are the first terrestrial plants to possess xylem and phloem?
Description : What part of a leaf contains xylem and phloem?
Last Answer : Need answer
Description : In which direction does phloem flow?
Last Answer : What is the answer ?
Description : What are the xylem and phloem of plants used for?
Last Answer : Xylem tissue is used mostly for transporting water from roots to stems and leaves but also transports other dissolved compounds. Phloem is responsible for transporting food produced from photosynthesis from leaves to non-photosynthesizing parts of a plant such as roots and stems.
Description : Select the correct statement: (1) C4 pathway for. CO2 fixation were discovered by Hatch and Slack (2) CO2 is essential for photosynthesis (3) Addition of sodium carbonate in water retards photosynthetic rate in vallisneria (4) Phloem is the principal pathway for translocation of solutes
Last Answer : Ans. ((c))
Description : Leptome is used for: (a) Phloem (c) Fibres (b) Xylem (d) Parenhyma
Last Answer : Ans. ((a))
Description : What tissue present in leaves of Pinus conducts food and water laterally? (a) Transfusion tissue (b) Phloem (c) Xylem (d) Medullary rays
Description : Chief function of phloem is conduction of: (a) Food (b) Minerals (c) Water (d) Air
Description : What is the difference between xylem and phloem ?
Last Answer : Both xylem and phloem are vascular tissues found in a plant. Xylem is a tubular structure, which is responsible for water transport from the roots towards all of the parts of the plant. Phloem ... the other hand, is responsible for the transportation of food and other nutrients needed by plant.
Description : Which of the following statements about phloem transport is correct? (1) phloem transport occurs unidirectionally (2) gravity influences phloem transport (3) Ca+ is the most abundantcation in phloem sap (4) sugar is transported in phloem as nonreducing sugar
Last Answer : (4) sugar is transported in phloem as nonreducing sugar Explanation: According to most textbooks, only non-reducing carbohydrate species such as sucrose, sugar alcohols, and raffinose family ... probably reflects packaging of carbohydrate in a chemical form which protects it from being metabolized.
Description : If xylem and phloem are arranged in the same radius, such a vascular bundle is called : (1) collateral (2) bicollateral (3) concentric (4) radial
Last Answer : (1) collateral Explanation: In the collateral type of vascular bundle, xylem and phloem are arranged side by side on the same radius. This may be either open or closed. Usually xylem is seen ... the inner side and phloem towards outer side. The collateral vascular bundle is also known as conjoint.
Description : Which of the following is responsible for transport of food and other substances in plants? (1) Xylem (2) Phloem (3) Chloroplast (4) None these
Last Answer : (2) Phloem Explanation: The transport of water, nutrients and other substances from one part of a plant to another is called translocation. While, phloem transports synthesized food from the ... the plant body; water and minerals are transported from the roots upwards through the xylem tubes.
Description : Companion cells of phloem are found in – (1) Gymnosperms (2) Bryophyta (3) Pteridophyta (4) Angiosperms
Last Answer : (4) Angiosperms Explanation: Only in angiosperms are sieve tubes and companion cells found in the plaloern. In other vascular plants, parenchyma cells function in the same way as companion cells (that ... living protoplasm), but they are not derived from the same mother cell as the sieve element.
Description : Water conduction takes place in mosses through – (1) Xylem and Phloem (2) Xylem (3) Collenchyma (4) Parenchyma
Last Answer : (4) Parenchyma Explanation: Botanically, mosses are nonvascular plants that absorb water and nutrients mainly through their leaves and harvest carbon dioxide and sunlight to create food by photosynthesis. ... They do not have a welldeveloped xylem. Their conducting tissue is made up of parenchyma.
Description : Which of the following is responsible for transport of food and other substances in plants? (1) Xylem (2) Phloem (3) Chloroplast (4) None of these
Description : The food conducting tissue of a plant is (1) Phloem (2) Xylem (3) Parenchyma (4) Collenchyma
Last Answer : (1) Phloem Explanation: In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. ... mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
Description : Ascent of sap in plants takes place through – (1) Pith (2) Phloem (3) Cambium (4) Xylem
Last Answer : (4) Xylem Explanation: The ascent of sap in the xylem tissue of plants is the upward movement of water from the root to the crown. Xylem is a complex tissue consisting of living and ... cells in xylem are typically nonliving and include, in various groups of plants, vessels members and tracheids.
Description : Which of the following moves/transports water and mineral from the soil to other parts of the plants? (1) Phloem (2) Xylem (3) Chlorophyll (4) Roots
Last Answer : (2) Xylem Explanation: Xylem moves water and minerals obtained from the soil. The other, phloem transports products of photosynthesis from the leaves to other parts.
Description : Water in plants is transported by - (1) cambium (2) phloem (3) epidermis (4) xylem
Last Answer : (4) xylem Explanation: Water is transported through the plant in Xylem vessels, these begin in the roots and end in the leaves of the plant, water is translocated through a combination of ... photosynthesis (glucose) through the plant, the tissue responsible for moving the "food" around is Phloem.
Description : The opening and closing of the stomatal pores is a function of the - (1) Guard cells (2) Chloroplast (3) Xylem (4) Phloem
Last Answer : (1) Guard cells Explanation: The opening and closing of the pores is a function of the guard cells. They swell when water flows into them, causing the stomatal pore to open and likewise, the pore closes if the guard cells shrink.
Description : The xylem and phloem elements in the plant are surrounded by a layer of living cells called (a) Casparian strips (b) Pericycle (c) Stele(d) Endodermis
Last Answer : (b) Pericycle
Description : Jute fibre is extracted from ? a Xylem b Parenchyma c Secondary phloem d Epidermal layer
Last Answer : c Secondary phloem
Description : Highest auxin concentration occurs (a) in growing tips (b) in leaves (c) at base of plant organs (d) in xylem and phloem
Last Answer : (a) in growing tips
Description : In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of (a) bundle sheath (b) phloem (c) epidermis (d) mesophyll.
Last Answer : (d) mesophyll.