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 non-reducing sugar

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 non-reducing sugar
by

1 Answer

Answer :

sugar is transported in phloem as non-reducing sugar
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Related questions

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

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.

A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap? (a) Acidic (b) Alkaline (c) Low refractive index (d) Absence of sugar

Description : A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap? (a) Acidic (b) Alkaline (c) Low refractive index (d) Absence of sugar

Last Answer : (b) Alkaline

What does phloem sap contain? -Biology

Description : What does phloem sap contain? -Biology

Last Answer : answer:

Ascent of sap in plants takes place through – (1) Pith (2) Phloem (3) Cambium (4) Xylem

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.

Ascent of sap in plants takes place through (1) Pith (2) Phloem (3) Cambium (4) Xylem

Description : Ascent of sap in plants takes place through (1) Pith (2) Phloem (3) Cambium (4) Xylem

Last Answer : Xylem

Which one of the following statements concerning glucose metabolism is correct? (A) The conversion of Glucose to lactate occurs only in the R.B.C (B) Glucose enters most cells by a mechanism in which Na+ and glucose are co-transported (C) Pyruvate kinase catalyses an irreversible reaction (D) An elevated level of insulin leads to a decreased level of fructose 2, 6-bisphosphate in hepatocyte

Description : Which one of the following statements concerning glucose metabolism is correct? (A) The conversion of Glucose to lactate occurs only in the R.B.C (B) Glucose enters most cells by a mechanism in ... ) An elevated level of insulin leads to a decreased level of fructose 2, 6-bisphosphate in hepatocyte

Last Answer : C

Water in plants is transported by - (1) cambium (2) phloem (3) epidermis (4) xylem

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.

The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing (A) Cohesion and effective angle of shearing resistance (B) Cohesion and effective unit weight of soil (C) Effective unit weight of soil and effective angle of shearing resistance (D) Effective angle of shearing resistance

Description : The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing (A) Cohesion and effective angle of shearing resistance (B) Cohesion and effective ... weight of soil and effective angle of shearing resistance (D) Effective angle of shearing resistance

Last Answer : Answer: Option B

Which is correct about transport of conduction of substances? (a) Organic food moves up through phloem (b) Organic food moves up through xylem (c) Inorganic food moves upwardly and downwardly through xylem (d) Organic food moves upwardly and downwardly through phloem

Description : Which is correct about transport of conduction of substances? (a) Organic food moves up through phloem (b) Organic food moves up through xylem (c) Inorganic food moves upwardly and downwardly through xylem (d) Organic food moves upwardly and downwardly through phloem

Last Answer : (d) Organic food moves upwardly and downwardly through phloem

The fatty acids can be transported into and out of mitochondria through (A) Active transport (B) Facilitated transfer (C) Non-facilitated transfer (D) None of these

Description : The fatty acids can be transported into and out of mitochondria through (A) Active transport (B) Facilitated transfer (C) Non-facilitated transfer (D) None of these

Last Answer : B

Death of protoplasm is a pre-requisite for a vital function like (a) transport of sap (b) transport of food (c) absorption of water (d) gaseous exchange.

Description : Death of protoplasm is a pre-requisite for a vital function like (a) transport of sap (b) transport of food (c) absorption of water (d) gaseous exchange.

Last Answer : (a) transport of sap

Death of protoplasm is a pre-requisite for a vital function like (a) transport of sap (b) transport of food (c) absorption of water (d) gaseous exchange

Description : Death of protoplasm is a pre-requisite for a vital function like (a) transport of sap (b) transport of food (c) absorption of water (d) gaseous exchange

Last Answer : (a) transport of sap

Death of protoplasm is a pre-requisite for a vital function like (a) transport of sap (b) transport of food (c) absorption of water (d) gaseous exchange

Description : Death of protoplasm is a pre-requisite for a vital function like (a) transport of sap (b) transport of food (c) absorption of water (d) gaseous exchange

Last Answer : (a) transport of sap

On operating system level in the log subdirectory of the transport directory, you find the file DEVI990123 QAS What is this file? A. This is the log for the export of transport request DEVK990123 from system QAS B. This is the tp system log of the QAS system from January 23, 1999 C. This is the log file for the main import of transport request DEVI990123into system SAP D. This is the data file of transport request DEVI990123 which is to be imported into QAS system

Description : On operating system level in the log subdirectory of the transport directory, you find the file DEVI990123 QAS What is this file? A. This is the log for the export of transport request DEVK990123 ... D. This is the data file of transport request DEVI990123 which is to be imported into QAS system

Last Answer : C. This is the log file for the main import of transport request DEVI990123into system SAP

Consider the following statements: 1. Dry rot in sap wood is caused by fungal attack 2. Brown rot in coniferous woods is a result of fungal attack 3. Alternate wetting and drying of unseasoned timber causes ‘powdery’ form of decay in wood. Which of these statements are correct? (a) 1, 2 and 3 b)1 and 2 only c)2 and 3 only d)1 and 3 only

Description : Consider the following statements: 1. Dry rot in sap wood is caused by fungal attack 2. Brown rot in coniferous woods is a result of fungal attack 3. Alternate wetting and drying of unseasoned timber causes powdery' form of decay in ... ? (a) 1, 2 and 3 b)1 and 2 only c)2 and 3 only d)1 and 3 only

Last Answer : (a) 1, 2 and 3

With respect to lipoprotein transport and metabolism in the body, the following statements are correct EXCEPT: 1) Arterial walls contain cells with LDL receptors. 2) Cholesterol is required for the formation of red blood cell membranes. 3) Chylomicrons are synthesized in the liver. 4) HDL is assembled in the extracellular space. 5) VLDL transformation to LDL occurs in adipose tissue.

Description : With respect to lipoprotein transport and metabolism in the body, the following statements are correct EXCEPT: 1) Arterial walls contain cells with LDL receptors. 2) Cholesterol is required for the ... is assembled in the extracellular space. 5) VLDL transformation to LDL occurs in adipose tissue.

Last Answer : Answers-3 Chylomicrons are formed in the gut from exogenous triacylglycerols and cholesterol. They are released into the lymph and thereby enter the blood.They are not formed in the liver.

With respect to lipoprotein transport and metabolism in the body, the following statements are correct EXCEPT: 1) Arterial walls contain cells with LDL receptors. 2) Cholesterol is required for the formation of red blood cell membranes. 3) Chylomicrons are synthesized in the liver. 4) HDL is assembled in the extracellular space. 5) VLDL transformation to LDL occurs in adipose tissue.

Description : With respect to lipoprotein transport and metabolism in the body, the following statements are correct EXCEPT: 1) Arterial walls contain cells with LDL receptors. 2) Cholesterol is required for the ... is assembled in the extracellular space. 5) VLDL transformation to LDL occurs in adipose tissue.

Last Answer : Answers-3 Chylomicrons are formed in the gut from exogenous triacylglycerols and cholesterol. They are released into the lymph and thereby enter the blood.They are not formed in the liver.

Which of the following statements is false about glucose? (a) it is a reducing sugar. (b) it is a disaccharide. (c) it has a pyranose form. (d) it is a polyalcoho

Description : Which of the following statements is false about glucose? (a) it is a reducing sugar. (b) it is a disaccharide. (c) it has a pyranose form. (d) it is a polyalcoho

Last Answer : it is a disaccharide.

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 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)

Which of the following is responsible for transport of food and other substances in plants? (1) Xylem (2) Phloem (3) Chloroplast (4) None these

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.

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 : 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

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.

Function of companion cells is (a) providing energy to sieve elements for active transport (b) providing water to phloem (c) loading of sucrose into sieve elements by passive transport (d) loading of sucrose into sieve elements.

Description : Function of companion cells is (a) providing energy to sieve elements for active transport (b) providing water to phloem (c) loading of sucrose into sieve elements by passive transport (d) loading of sucrose into sieve elements.

Last Answer : (d) loading of sucrose into sieve elements.

Function of companion cells is (a) providing energy to sieve elements for active transport (b) providing water to phloem (c) loading of sucrose into sieve elements by passive transport (d) loading of sucrose into sieve elements.

Description : Function of companion cells is (a) providing energy to sieve elements for active transport (b) providing water to phloem (c) loading of sucrose into sieve elements by passive transport (d) loading of sucrose into sieve elements.

Last Answer : (d) loading of sucrose into sieve elements.

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 : 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

Last Answer : Phloem

Consider the following statements: 1. Carbonate hardness is due to bicarbonates. 2. Non-carbonate hardness is due to sulphates and chlorides of Ca and Mg. 3. Both the hardnesses can be removed by lime-soda method. 4. Both the hardnesses can be removed by ion-exchange method. Which of these statements are correct? (a) 1, 2 & 3 only (b) 1, 2 & 4 only (c) 2, 3 & 4 only (d) 1, 2, 3 & 4

Description : Consider the following statements: 1. Carbonate hardness is due to bicarbonates. 2. Non-carbonate hardness is due to sulphates and chlorides of Ca and Mg. 3. Both the hardnesses can be removed by lime-soda method. 4. Both the hardnesses can be ... (b) 1, 2 & 4 only (c) 2, 3 & 4 only (d) 1, 2, 3 & 4

Last Answer : (a) 1, 2 & 3 only

Which of the following is a non-reducing sugar? (A) Isomaltose (B) Maltose (C) Lactose (D) Trehalose

Description : Which of the following is a non-reducing sugar? (A) Isomaltose (B) Maltose (C) Lactose (D) Trehalose

Last Answer : D

Non reducing type sugar is

Description : Non reducing type sugar is

Last Answer : Ans. Sucrose

Glucose and fructose are reducing sugars, but sucrose (containing glucose and fructose) is a non-reducing sugar, why?

Description : Glucose and fructose are reducing sugars, but sucrose (containing glucose and fructose) is a non-reducing sugar, why?

Last Answer : Because the glycosidic linkage in sucrose involves 1st carbon of glucose and 2nd carbon of fructose, so both reducing groups are masked.

Fatty acids can be transported into and out of cell membrane by (A) Active transport (B) Facilitated transport (C) Diffusion (D) Osmosis

Description : Fatty acids can be transported into and out of cell membrane by (A) Active transport (B) Facilitated transport (C) Diffusion (D) Osmosis

Last Answer : B

There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s) is/are true concerning energy converting transport? a. The site of energy conversion and transport in the plasma membrane involves the phospholipid component b. The Na+-K++-ATPase derives energy from hydrolysis of extracellular ATP c. In some systems, energy inherent in the transmembrane ion gradient can be used to drive transport of a second species d. Examples of species transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

Description : There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s ... transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

Last Answer : Answer: c, d The selectivity of the plasma membrane, although impressive, cannot account for the nonequilibrium composition of living cells. A cell can be maintained in a nonequilibrium state only by ... to drive the transport of a second species such as protons, calcium, amino acids, or glucose

What is true about RBCs in humans? (a) They carry about 20-25 percent of CO2. (b) They transport 99.5 percent of O2. (c) They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma. (d) They do not carry CO2 at all.

Description : What is true about RBCs in humans? (a) They carry about 20-25 percent of CO2. (b) They transport 99.5 percent of O2. (c) They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma. (d) They do not carry CO2 at all.

Last Answer : (a) They carry about 20-25 percent of CO2.

Loading of phloem is related to (a) increase of sugar in phloem (b) elongation of phloem cell(c) separation of phloem parenchyma (d) strengthening of phloem fiber.

Description : Loading of phloem is related to (a) increase of sugar in phloem (b) elongation of phloem cell (c) separation of phloem parenchyma (d) strengthening of phloem fiber.

Last Answer : (a) increase of sugar in phloem

From a to d which of the following statements are correct ? (a) Fertilisation can occur only if the ovum and sperm are transported simultaneously to t

Description : From a to d which of the following statements are correct ? (a) Fertilisation can occur only if the ovum and sperm are transported simultaneously to t

Last Answer : From a to d which of the following statements are correct ? (a) Fertilisation can occur only if the ovum and sperm ... b and c C. c and d D. b and d

In which of the following , phloem occurs in two patches ?

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

Highest auxin concentration occurs (a) in growing tips (b) in leaves (c) at base of plant organs (d) in xylem and 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

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.

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.

Which one of the following statements best defines an estimate? a. An approximation of project time and cost targets, refined throughout the project life cycle. b. A prediction of a future condition or event based on information or knowledge available now. c. The value of useful work done at any given point in a project to give a measure of progress. d. A situation that affects or influences the outcome of the project expressed in time or cost terms

Description : Which one of the following statements best defines an estimate? a. An approximation of project time and cost targets, refined throughout the project life cycle. b. A prediction of a future ... . A situation that affects or influences the outcome of the project expressed in time or cost terms

Last Answer : a. An approximation of project time and cost targets, refined throughout the project life cycle.

Which one of the following statements best defines an estimate? a. An approximation of project time and cost targets, refined throughout the project life cycle. b. A prediction of a future condition or event based on information or knowledge available now. c. The value of useful work done at any given point in a project to give a measure of progress. d. A situation that affects or influences the outcome of the project expressed in time or cost terms.

Description : Which one of the following statements best defines an estimate?  a. An approximation of project time and cost targets, refined throughout the project life  cycle.  b. A prediction of a future ... . A situation that affects or influences the outcome of the project expressed in time or cost terms.

Last Answer : a. An approximation of project time and cost targets, refined throughout the project life  cycle.

True statements about the pH of the extracellular fluid: a. in healthy people it is maintained between 7.4 and 7.5 b. is increased in hypovolaemic shock c. decreases following a cardiac arrest d. influences the binding of drugs to plasma proteins

Description : True statements about the pH of the extracellular fluid: a. in healthy people it is maintained between 7.4 and 7.5 b. is increased in hypovolaemic shock c. decreases following a cardiac arrest d. influences the binding of drugs to plasma proteins

Last Answer : . influences the binding of drugs to plasma proteins

Which of the following statements describes benign paroxysmal positional vertigo (BPPV)? a) The vertigo is usually accompanied by nausea and vomiting; however hearing impairment does not generally occur. BPPV is a brief period of incapacitating vertigo that occurs when the position of the patient’s head is changed with respect to gravity. The vertigo is usually accompanied by nausea and vomiting; however hearing impairment does not generally occur.

Description : Which of the following statements describes benign paroxysmal positional vertigo (BPPV)? a) The vertigo is usually accompanied by nausea and vomiting; however hearing impairment does not generally occur. ... as acetaminophen. BPPV is frequently stimulated by head trauma, infection, or other events.

Last Answer : a) The vertigo is usually accompanied by nausea and vomiting; however hearing impairment does not generally occur. BPPV is a brief period of incapacitating vertigo that occurs when the ... vertigo is usually accompanied by nausea and vomiting; however hearing impairment does not generally occur.

Which of the following statements is NOT true about diabetes mellitus? A) Type II diabetes is much more common than type I. B) Insulin injections are required in both type I and type II diabetes. C) Type I diabetes occurs as a result of destruction of the insulin-producing cells. D) One method of treating type II diabetes is exercise and a low-fat, low-sugar diet. E) Symptoms of diabetes include excessive thirst, frequent urination, and glucose in the urine.

Description : Which of the following statements is NOT true about diabetes mellitus? A) Type II diabetes is much more common than type I. B) Insulin injections are required in both type I and type II ... -sugar diet. E) Symptoms of diabetes include excessive thirst, frequent urination, and glucose in the urine.

Last Answer : B) Insulin injections are required in both type I and type II diabetes.

Which of the following is not a feature of active transport of solutes in plants ? (a) Occurs against concentration gradient (b) Non-selective (c) Occurs through membranes (d) Requires ATP

Description : Which of the following is not a feature of active transport of solutes in plants ? (a) Occurs against concentration gradient (b) Non-selective (c) Occurs through membranes (d) Requires ATP

Last Answer : Non-selective

`H_(2)C_(2)O_(4)` and `NaHC_(2)O_(4)` behave as acids as well as reducing agents. Which are the correct statements?

Description : `H_(2)C_(2)O_(4)` and `NaHC_(2)O_(4)` behave as acids as well as reducing agents. Which are the correct statements?

Last Answer : `H_(2)C_(2)O_(4)` and `NaHC_(2)O_(4)` behave as acids as well as reducing agents. Which are the ... is oxidised by same volume of 1 (M) `KMnO_(4)`

Which one of the following statements is correct with respect to AIDS? (a) The HIV can be transmitted through eating food together with an infected person. (b) Drug addicts are least susceptible to HIV infection.(c) AIDS patients are being fully cured cent per cent with proper care and nutrition. (d) The causative HIV retrovirus enters helper T-lymphocytes thus reducing their numbers.

Description : Which one of the following statements is correct with respect to AIDS? (a) The HIV can be transmitted through eating food together with an infected person. (b) Drug addicts are least ... and nutrition. (d) The causative HIV retrovirus enters helper T-lymphocytes thus reducing their numbers.

Last Answer : (d) The causative HIV retrovirus enters helper T-lymphocytes thus reducing their numbers.

Which of the following statements about the given reaction are correct? 3Fe(s) + 4H2O(g) → Fe3O4 (s) + 4H2 (g) (a) Iron metal is getting oxidized. (b) Water is getting reduced. (c) Water is acting as reducing agent. (d)Water is acting as oxidizing agent. A) (A), (B) & (C) B) (C) & (D) C) (A), (B) & (D) D) (B) & (D)

Description : Which of the following statements about the given reaction are correct? 3Fe(s) + 4H2O(g) → Fe3O4 (s) + 4H2 (g) (a) Iron metal is getting oxidized. (b) Water is getting reduced. (c) Water is acting as reducing agent. (d)Water is acting as ... (B) & (C) B) (C) & (D) C) (A), (B) & (D) D) (B) & (D)

Last Answer : C) (A), (B) & (D)

Which one of the following statements is true regarding digestion and absorption of food in humans? (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+. (b) Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries. (c) About 60% of starch is hydrolysed by salivary amylase in our mouth. (d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

Description : Which one of the following statements is true regarding digestion and absorption of food in humans? (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions ... amylase in our mouth. (d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

Last Answer : (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na

What is the direction of movement of sugars in phloem? (a) Bi-directional (b) Non-multidirectional (c) Upward (d) Downward

Description : What is the direction of movement of sugars in phloem? (a) Bi-directional (b) Non-multidirectional (c) Upward (d) Downward

Last Answer : (a) Bi-directional

.Match the terms in column I with their description in column II and choose the correct option. Column I Column II A. Dominance (i) Many genes govern a single character B. Co-dominance (ii) In a heterozygous organism only one allele expresses itself C. Pleiotropy (iii) In a heterozygous organism both alleles express themselves fully D. Polygenic (iv) A single gene inheritance influences many characters A B C D (a) (iv) (i) (ii) (iii) (b) (iv) (iii) (i) (ii) (c) (ii) (i) (iv) (iii) (d) (ii) (iii) (iv) (i)

Description : .Match the terms in column I with their description in column II and choose the correct option. Column I Column II A. Dominance (i) Many genes govern a single character B. Co-dominance (ii) In a heterozygous organism only one allele ... (i) (ii) (c) (ii) (i) (iv) (iii) (d) (ii) (iii) (iv) (i)

Last Answer : (d) (ii) (iii) (iv) (i)