The special modified epiderniai cells surrounding stomatal pore are called - (1) Epithelial cells (2) Guard cells (3) Subsidiary cells (4) Accessory cells

The special modified epiderniai cells surrounding stomatal pore are called - (1) Epithelial cells (2) Guard cells (3) Subsidiary cells (4) Accessory cells
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(2) Guard cells Explanation: The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the opening. Guard cells are specialized cells in the epidermis of leaves, stems and other organs that are used to control gas exchange.
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The special modified epidermal cells surrounding stomatal pore are called (1) Epithelial cells (2) Guard cells (3) Subsidiary cells (4) Accessory cells

Description : The special modified epidermal cells surrounding stomatal pore are called (1) Epithelial cells (2) Guard cells (3) Subsidiary cells (4) Accessory cells

Last Answer : Guard cells

Which of the following statements is not true for stomatal apparatus? (a) Guard cells invariably possess chloroplasts and mitochondria. (b) Guard cells are always surrounded by subsidiary cells. (c) Stomata are involved in gaseous exchange. (d) Inner wall of guard cells are thick

Description : Which of the following statements is not true for stomatal apparatus? (a) Guard cells invariably possess chloroplasts and mitochondria. (b) Guard cells are always surrounded by subsidiary cells. (c) Stomata are involved in gaseous exchange. (d) Inner wall of guard cells are thick

Last Answer : (b) Guard cells are always surrounded by subsidiary cells.

(a) Draw a diagram to show open stomatal pore and label on it: (i) guard cells (ii) chloroplast (b) State two functions of stomata. (c) How do guard cells regulate the opening and closing of stomatal pore? -Biology

Description : (a) Draw a diagram to show open stomatal pore and label on it: (i) guard cells (ii) chloroplast (b) State two functions of stomata. (c) How do guard cells regulate the opening and closing of stomatal pore? -Biology

Last Answer : (a) (b) Two functions of stomata are: (i) Exchange of gases between the plant and the atmosphere takes place through stomata. (ii)Transpiration in plants takes place through stomata. ( ... through these stomata, the plant closes these pores when it does not require carbon dioxide for photosynthesis.

In guard cells when sugar is converted into starch, the stomatal pore (a) closes completely (b) opens partially (c) opens fully (d) remains unchanged.

Description : In guard cells when sugar is converted into starch, the stomatal pore (a) closes completely (b) opens partially (c) opens fully (d) remains unchanged.

Last Answer : a) closes completely

Specialised epidermal cells surrounding the guard cells are called (a) bulliform cells (b) lenticels (c) complementary cells (d) subsidiary cells

Description : Specialised epidermal cells surrounding the guard cells are called (a) bulliform cells (b) lenticels (c) complementary cells (d) subsidiary cells

Last Answer : d) subsidiary cells.

Given below is the diagram of a stomatal apparatus. In which of the following all the four parts labelled as A, B, C and D are correctly identified? A B C D A B C D (a) Subsidiary Epidermal Guard cell Stomatal cell cell aperture (b) Guard cell Stomatal Subsidiary Epidermal aperture cell cell (c) Epidermal Guard cell Stomatal Subsidiary cell cell aperture (d) Epidermal Subsidiary Stomatal Guard cell cell cell aperture

Description : Given below is the diagram of a stomatal apparatus. In which of the following all the four parts labelled as A, B, C and D are correctly identified? A B C D A B C D ... ) Epidermal Guard cell Stomatal Subsidiary cell cell aperture (d) Epidermal Subsidiary Stomatal Guard cell cell cell aperture

Last Answer : d) Epidermal Subsidiary Stomatal Guard cell cell cell aperture

How do guard cells regulate opening and closing of stomatal pores ? -Science

Description : How do guard cells regulate opening and closing of stomatal pores ? -Science

Last Answer : The opening and closing of stomatal pores is controlled by the guard cells, when water flows into the guard cells, they swell, become curved and cause the pore to open whereas when the guard cells lose water, they shrink, become straight and close the stomatal pore

Stomatal opening is based on (1) Exosrnosis (2) Endosmosis (3) Plasmolysis in guard cells (4) Decrease in concentration of cell sap

Description : Stomatal opening is based on (1) Exosrnosis (2) Endosmosis (3) Plasmolysis in guard cells (4) Decrease in concentration of cell sap

Last Answer : (2) Endosmosis Explanation: According to the K+ ion theory the guard cells absorb K+ ions from the cells around them as they produce ATP (due to photosynthesis) and become ... guard cells become turgid and the stomata opens. Decreasing light intensity and photosynthesis causes Stomatal closing.

The opening and closing of the stomatal pores is a function of the - (1) Guard cells (2) Chloroplast (3) Xylem (4) 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.

Which of the following facilitates opening of stomatal aperture? (a) Decrease in turgidity of guard cells (b) Radial orientation of cellulose microfibrils in the cell wall of guard cells (c) Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells (d) Contraction of outer wall of guard cells

Description : Which of the following facilitates opening of stomatal aperture? (a) Decrease in turgidity of guard cells (b) Radial orientation of cellulose microfibrils in the cell wall of guard cells (c) ... microfibrils in the cell wall of guard cells (d) Contraction of outer wall of guard cells

Last Answer : (a) Decrease in turgidity of guard cells

Which of the following facilitates opening of stomatal aperture ? (1) Decrease in turgidity of guard cells (2) Radial orientation of cellulose microfibrils in the cell wall of guard cells (3) Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells (4) Contraction of outer wall of guard cells

Description : Which of the following facilitates opening of stomatal aperture ? (1) Decrease in turgidity of guard cells (2) Radial orientation of cellulose microfibrils in the cell wall of guard cells (3) Longitudinal ... microfibrils in the cell wall of guard cells (4) Contraction of outer wall of guard cells

Last Answer : (2) Radial orientation of cellulose microfibrils in the cell wall of guard cells

Stomatal opening is based on (1) Exosmosis (2) Endosmosis (3) Plasmolysis in guard cells (4) Decrease in concentration of cell sap

Description : Stomatal opening is based on (1) Exosmosis (2) Endosmosis (3) Plasmolysis in guard cells (4) Decrease in concentration of cell sap

Last Answer : Endosmosis

Whent the subsidiary or neighboring cells have a common origin with the guard cells such type of stomata ontogeny is called as –

Description : Whent the subsidiary or neighboring cells have a common origin with the guard cells such type of stomata ontogeny is called as –

Last Answer : Whent the subsidiary or neighboring cells have a common origin with the guard cells such type of stomata ontogeny is called as – Mesogenous development

The cells which are closely associated and interacting with guard cells are - (1) Transfusion tissue (2) Complementary cells (3) Subsidiary cells (4) Hypodermal cells

Description : The cells which are closely associated and interacting with guard cells are - (1) Transfusion tissue (2) Complementary cells (3) Subsidiary cells (4) Hypodermal cells

Last Answer : (3) Subsidiary cells Explanation: Guard cells interact physiologically and mechanically with subsidiary cells. Guard cells are those which have chloroplasts and control the opening of stomata. But, subsidiary cells are those which support the guard cells and they do not have chloroplasts.

The cells which are colsely associated and interacting with guard cells are (1) Transfusion tissue (2) Complementary cells (3) Subsidiary cells (4) Hypodermal cells

Description : The cells which are colsely associated and interacting with guard cells are (1) Transfusion tissue (2) Complementary cells (3) Subsidiary cells (4) Hypodermal cells

Last Answer : Subsidiary cells

Goblet cells of alimentary canal are modified from (a) squamous epithelial cells (b) columnar epithelial cells (c) chondrocytes (d) compound epithelial cells.

Description : Goblet cells of alimentary canal are modified from (a) squamous epithelial cells (b) columnar epithelial cells (c) chondrocytes (d) compound epithelial cells.

Last Answer : (b) columnar epithelial cells

Which one gives the most valid and recent explanation for stomatal movement? (a) Starch hydrolysis (b) Guard cell photosynthesis (c) Transpiration (d) Potassium influx and efflux

Description : Which one gives the most valid and recent explanation for stomatal movement? (a) Starch hydrolysis (b) Guard cell photosynthesis (c) Transpiration (d) Potassium influx and efflux

Last Answer : (d) Potassium influx and efflux

What do subsidiary cells do? -Biology

Description : What do subsidiary cells do? -Biology

Last Answer : answer:

(i) Write the specific location and the functions of the following cells in human males Leydig cells Sertoli cells Primary spermatocyte (ii) Explain the role of any two accessory glands in human male reproductive system. -Biology

Description : (i) Write the specific location and the functions of the following cells in human males Leydig cells Sertoli cells Primary spermatocyte (ii) Explain the role of any two accessory glands in human male reproductive system. -Biology

Last Answer : I)Oogenesis begins during the embryonic development stage when a million gamete mother cells (oogonia) are formed within each foetal ovary. (ii) (a) Sertoli cells are located on the inside ... provide nutrition to sperms. (b) Bulbourethral glands Their secretion helps in the lubrication of penis.

Of the following types of cells, which are believed to play a significant role in cutaneous immune system reactions? a) Langerhans’ cells Langerhans’ cells are common to the epidermis and are accessory cells of the afferent immune system process.

Description : Of the following types of cells, which are believed to play a significant role in cutaneous immune system reactions? a) Langerhans' cells Langerhans' cells are common to the epidermis and are ... and skin. d) Phagocytes Phagocytes are white blood cells that engulf and destroy foreign materials.

Last Answer : a) Langerhans’ cells Langerhans’ cells are common to the epidermis and are accessory cells of the afferent immune system process.

The cells of the epithelial lining in the vertebrate stomach are not damaged by HCl because of -

Description : The cells of the epithelial lining in the vertebrate stomach are not damaged by HCl because of -

Last Answer : The cells of the epithelial lining in the vertebrate stomach are not damaged by HCl because of - ... to dilute D. Epithelium being resistant to HCl

Germinal epithelial cells are cuboidal and these are found in

Description : Germinal epithelial cells are cuboidal and these are found in

Last Answer : Germinal epithelial cells are cuboidal and these are found in A. Testes B. Ovary C. Both D. None

The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles and small bronchi are known as

Description : The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles and small bronchi are known as

Last Answer : The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles ... epithelium C. Cilated epithelium D. Cubical epithelilum

The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles and small bronchi are known as

Description : The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles and small bronchi are known as

Last Answer : The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles and small ... Squamous B. Cuboidal C. Glandular D. Ciliated

Adjacent epithelial cells are held together by means of

Description : Adjacent epithelial cells are held together by means of

Last Answer : Adjacent epithelial cells are held together by means of A. Liposomes B. Glyoxisomes`//` glyoxysomes C. Desmosomes D. Mitcrosomes .

Epithelial tissue with thin flat cells appeating like packed tiles occurs on : -

Description : Epithelial tissue with thin flat cells appeating like packed tiles occurs on : -

Last Answer : Epithelial tissue with thin flat cells appeating like packed tiles occurs on : - A. Inner ... of fallopian tubes D. Outer surface of Intestine

The correct statement with respect to epithelial tissue is : - A - Cells are compactly packed B - cells have no intercellular matrix C - cells have li

Description : The correct statement with respect to epithelial tissue is : - A - Cells are compactly packed B - cells have no intercellular matrix C - cells have li

Last Answer : The correct statement with respect to epithelial tissue is : - A - Cells are compactly packed B - cells have no ... C C. A, C & D D. All of these

What are the features for Human Retinal Pigment Epithelial Cells?

Description : What are the features for Human Retinal Pigment Epithelial Cells?

Last Answer : Human Retinal Pigment Epithelial Cells (HRPEpiC) are isolatedfrom human retina. HRPEpiC are cryopreserved at passage one anddelivered frozen. Each vial contains >5 x 10^5 cells in 1 mlvolume. HRPEpiC are ... fibronectin.HRPEpiC are negative for HIV-1, HBV, HCV, mycoplasma, bacteria,yeast and fungi.

What is the name of the structure that attaches epithelial cells to underlying connective tissue?

Description : What is the name of the structure that attaches epithelial cells to underlying connective tissue?

Last Answer : Feel Free to Answer

Where are apical lateral and basal surfaces of epithelial cells found?

Description : Where are apical lateral and basal surfaces of epithelial cells found?

Last Answer : Need answer

Target tissue of insulin is (A) Red blood cells (B) Renal tubular cells (C) GI tract epithelial cells (D) Liver

Description : Target tissue of insulin is (A) Red blood cells (B) Renal tubular cells (C) GI tract epithelial cells (D) Liver

Last Answer : Answer : D

Reconstitution of the epithelial barrier (epithelialization) begins within hours of the initial injury. Which of the following statement(s) is/are true concerning the process of epithelialization? a. Bacteria, protein exudate, and necrotic tissue all will compromise this process b. Epithelial cells exhibit contact proliferation c. Epithelialization occurs only from the margins of the wound d. Visible scarring can occur only when the injury extends deeper than the superficial dermis

Description : Reconstitution of the epithelial barrier (epithelialization) begins within hours of the initial injury. Which of the following statement(s) is/are true concerning the process of epithelialization? a. ... d. Visible scarring can occur only when the injury extends deeper than the superficial dermis

Last Answer : Answer: a, d The initial step of epithelialization involves epithelial cells from the basal layer of the wound edge flattening and migrating across the wound, completing wound coverage within 24- ... abrasions and burns may scar significantly. Whenever the dermis is incised, a scar will form

Which of the following statement(s) describe the effects of aging on wound healing? a. A finer, more cosmetic scar might be expected b. In vitro studies demonstrate decreased proliferative potential of fibroblasts and epithelial cells c. Skin sutures should be left in for a longer period of time d. Wound infection occurs more frequently in elderly patients due to diminished ability to fight infection

Description : Which of the following statement(s) describe the effects of aging on wound healing? a. A finer, more cosmetic scar might be expected b. In vitro studies demonstrate decreased proliferative ... . Wound infection occurs more frequently in elderly patients due to diminished ability to fight infection

Last Answer : Answer: a, b, c There are important age-dependent aspects of wound healing. The elderly heal more slowly and with less scarring. There is a gradual attenuation of the inflammatory ... the sutures. There is no evidence to suggest that wound infections occur more commonly in elderly patients

Pathognomic microscopic lesion of avian pox is A A. intracytoplasmic inclusion bodies in hyperplastic epithelial cells B. intranuclear inclusion bodies in hyperplastic epithelial cells C. No inclusion bodies in the epithelial cells D. None of these

Description : Pathognomic microscopic lesion of avian pox is A A. intracytoplasmic inclusion bodies in hyperplastic epithelial cells B. intranuclear inclusion bodies in hyperplastic epithelial cells C. No inclusion bodies in the epithelial cells D. None of these

Last Answer : intracytoplasmic inclusion bodies in hyperplastic epithelial cells

Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein (a) binds with epithelial cells of midgut of the insect pest ultimately killing it (b) is coded by several genes including the gene cry (c) is activated by acid pH of the foregut of the insect pest (d) does not kill the carrier bacterium which is itself resistant to this toxin.

Description : Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein (a) binds with epithelial cells of midgut of the insect pest ultimately killing it (b) is coded by several ... pest (d) does not kill the carrier bacterium which is itself resistant to this toxin.

Last Answer : (a) binds with epithelial cells of midgut of the insect pest ultimately killing it

A metastatic cancerous tumour is termed ‘sarcoma’ if the disorder is in (a) fibroblasts (b) circulatory system (c) immune system (d) epithelial cells.

Description : A metastatic cancerous tumour is termed ‘sarcoma’ if the disorder is in (a) fibroblasts (b) circulatory system (c) immune system (d) epithelial cells.

Last Answer : (a) fibroblasts

With respect to lens development: a. the lens first appears at 27 days of gestation b. it is formed from neural crest cells c. the lens first appears as a vesicles with a single layer of epithelial cells d. Y suture is absent in the embryonic nucleus e. the adult lens is more spherical than the foetal

Description : With respect to lens development: a. the lens first appears at 27 days of gestation b. it is formed from neural crest cells c. the lens first appears as a vesicles with a single layer of ... d. Y suture is absent in the embryonic nucleus e. the adult lens is more spherical than the foetal

Last Answer : the lens first appears at 27 days of gestation

Male hormone is produced in the testis by cells of (a) Sertoli (b) epithelial (c) spermatocytes (d) Leydig.

Description : Male hormone is produced in the testis by cells of (a) Sertoli (b) epithelial (c) spermatocytes (d) Leydig.

Last Answer : (d) Leydig.

Adrenaline directly affects on (a) SA node (b) β-cells of Langerhans (c) dorsal root of spinal nerve (d) epithelial cells of stomach.

Description : Adrenaline directly affects on (a) SA node (b) β-cells of Langerhans (c) dorsal root of spinal nerve (d) epithelial cells of stomach.

Last Answer : (a) SA node

Epithelial cells of the intestine involved in food absorption have on their surface (a) pinocytic vesicles (b) microvilli (c) zymogen granules (d) phagocytic vesicles.

Description : Epithelial cells of the intestine involved in food absorption have on their surface (a) pinocytic vesicles (b) microvilli (c) zymogen granules (d) phagocytic vesicles.

Last Answer : (b) microvilli

An epithelial tissue which has thin flat cells, arranged edge to edge so as to appear like closely packed tiles, is found to be present at (a) outer surface of ovary (b) inner lining of Fallopian tube (c) inner lining of stomach (d) inner lining of cheeks.

Description : An epithelial tissue which has thin flat cells, arranged edge to edge so as to appear like closely packed tiles, is found to be present at (a) outer surface of ovary (b) inner lining of Fallopian tube (c) inner lining of stomach (d) inner lining of cheeks.

Last Answer : (d) inner lining of cheeks.

Which cells do not form layer and remains structurally separate? (a) Epithelial cells (b) Muscle cells (c) Nerve cells (d) Gland cells

Description : Which cells do not form layer and remains structurally separate? (a) Epithelial cells (b) Muscle cells (c) Nerve cells (d) Gland cells

Last Answer : (c) Nerve cells

The ciliated columnar epithelial cells in humans are known to occur in (a) Eustachian tube and stomach lining (b) bronchioles and Fallopian tube (c) bile duct and oesophagus (d) Fallopian tube and urethra.

Description : The ciliated columnar epithelial cells in humans are known to occur in (a) Eustachian tube and stomach lining (b) bronchioles and Fallopian tube (c) bile duct and oesophagus (d) Fallopian tube and urethra.

Last Answer : (b) bronchioles and Fallopian tube

The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in (a) bronchioles and Fallopian tubes (b) bile duct and bronchioles (c) Fallopian tubes and pancreatic duct (d) Eustachian tube and salivary duct

Description : The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in (a) bronchioles and Fallopian tubes (b) bile duct and bronchioles (c) Fallopian tubes and pancreatic duct (d) Eustachian tube and salivary duct

Last Answer : (a) bronchioles and Fallopian tubes

.Which one of the following cells, found in testes of rabbit, secretes male hormone? (a) Epithelial cells (b) Spermatocytes (c) Leydig’s cell (d) Sertoli cells

Description : .Which one of the following cells, found in testes of rabbit, secretes male hormone? (a) Epithelial cells (b) Spermatocytes (c) Leydig’s cell (d) Sertoli cells

Last Answer : (c) Leydig’s cell

Which of the following types of cells have a latent ability to regenerate? a) Stable Stable cells have a latent ability to regenerate if they are damaged or destroyed and are found in the kidney, liver, and pancreas, among other body organs. b) Labile Labile cells multiply constantly to replace cells worn out by normal physiologic processes. c) Permanent Permanent cells include neurons — the nerve cell bodies, not their axons. Destruction of a neuron causes permanent loss, but axons may regenerate. d) Epithelial Epithelial cells are a type of labile cell that multiply constantly to replace cells worn out by normal physiologic processes.

Description : Which of the following types of cells have a latent ability to regenerate? a) Stable Stable cells have a latent ability to regenerate if they are damaged or destroyed and are found in the ... a type of labile cell that multiply constantly to replace cells worn out by normal physiologic processes.

Last Answer : a) Stable Stable cells have a latent ability to regenerate if they are damaged or destroyed and are found in the kidney, liver, and pancreas, among other body organs.

Which of the following elements is not found in normal periodontal membrane: A. Fibroblast B. Epithelial cells C. Erythrocytes D. Vest cells of malaise E. Inflammatory plasma cells and lymphocytes

Description : Which of the following elements is not found in normal periodontal membrane: A. Fibroblast B. Epithelial cells C. Erythrocytes D. Vest cells of malaise E. Inflammatory plasma cells and lymphocytes

Last Answer : C. Erythrocytes

Which type of cells does an abscess contain: A. Mast cells B. Polymorphonuclear leukocytes C. Eosinophils D. Epithelial cells

Description : Which type of cells does an abscess contain: A. Mast cells B. Polymorphonuclear leukocytes C. Eosinophils D. Epithelial cells

Last Answer : B. Polymorphonuclear leukocytes