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.
Description : The transverse section of a plant shows following anatomical features : (i) Large number of scattered vascular bundles surrounded by bundle sheath (ii) Large conspicuous parenchymatous ground ... (a) Monocotyledonous stem (b) Monocotyledonous root (c) Dicotyledonous stem (d) Dicotyledonous root
Last Answer : (a) Monocotyledonous stem
Description : In kranz anatomy, the bundle sheath cells have (a) thin walls, many intercellular spaces and no chloroplasts (b) thick walls, no intercellular spaces and large number of chloroplasts ... intercellular spaces and several chloroplasts (d) thick walls, many intercellular spaces and few chloroplasts
Last Answer : (b) thick walls, no intercellular spaces and large number of chloroplasts
Description : The CO2 fixation during C4 pathway occurs in the chloroplast of (a) guard cells (b) bundle sheath cells (c) mesophyll cells (d) spongy parenchyma.
Last Answer : (c) mesophyll cells
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.
Description : In leaves of C4 plants, malic acid synthesis during CO2 fixation occurs in (a) bundle sheath (b) guard cells (c) epidermal cells (d) mesophyll cells
Last Answer : (d) mesophyll cells.
Description : Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because (a) effective pumping of CO2 into bundle sheath cells (b) RuBisCO in C4 plants has higher affinity for CO2 (c ... d) the primary fixation of CO2 is mediated via PEP carboxylase. (2005) 65. In sugarcane plant
Last Answer : (d) the primary fixation of CO2 is mediated via PEP carboxylase.
Description : Water containing cavities in vascular bundles are found in (a) sunflower (b) maize (c) Cycas (d) Pinus.
Last Answer : (b) maize
Description : Assertion :In `C_(4)` plants, the chloroplasts of bundle sheath cells are granal. Reason: PS II is mostly found in the appressed part of granum.
Last Answer : Assertion :In `C_(4)` plants, the chloroplasts of bundle sheath cells are granal. Reason: PS II ... false. D. If both Assertion and Reason are false.
Description : In `C_(4)` plants , mesophyll cells and bundle sheath cells are specialized to perform, respectively,
Last Answer : In `C_(4)` plants , mesophyll cells and bundle sheath cells are specialized to ... and photorespiration D. Photorespiration and dark reaction
Description : Write the characteristics of bundle sheath cells of `C_(4)` plants
Last Answer : Write the characteristics of bundle sheath cells of `C_(4)` plants
Description : Bundle sheath cells (a) are rich in PEP carboxylase (b) lack RuBisCO (c) lack both RuBisCO and PEP carboxylase (d) are rich in RuBisCO.
Last Answer : d) are rich in RuBisCO.
Description : Bundles of striated muscle fibres called fasciculi are surrounded by a sheath called :-
Last Answer : Bundles of striated muscle fibres called fasciculi are surrounded by a sheath called :- A. Epimysium B. Perimysium C. Exomysium D. Endomysium
Description : In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used (A) In low range of temperature differences (B) In high range of temperature differences (C) Because of its low cost (D) To prevent corrosion of the tube bundles
Last Answer : (B) In high range of temperature differences
Description : In C4 plants, Calvin cycle operates in (a) stroma of bundle sheath chloroplasts (b) grana of bundle sheath chloroplasts (c) grana of mesophyll chloroplasts (d) stroma of mesophyll chloroplasts.
Last Answer : (a) stroma of bundle sheath chloroplasts
Description : Study the pathway given below. Atmospheric CO2 mesophyll cell Bundle sheath cell Plasma- desmata Plasma membrane Cell wall HCO Phosphoenol- 3 - pyruvate Cell wall C acid ... b) Fixation Transamination Regeneration (c) Fixation Decarboxylation Regeneration (d) Carboxylation Decarboxylation Reduction
Last Answer : (c) Fixation Decarboxylation Regeneration
Description : What are bundle sheath extensions? What is their role?
Last Answer : Ans: The extensions of bundle sheath of leaf towards adaxial and abaxial sides of leaf are called as bundle sheath extensions. They help in conduction and providing mechanical strength.
Description : Where are the vascular bundles in a plant? -Biology
Last Answer : The vascular bundles are arranged near the edge of the stem, with the phloem on the outside and the xylem on the inside.
Description : Which of the following statements are true of coronary artery anatomy? A. Right bundle branch block in acute anterior myocardial infarction suggests obstruction prior to the first septal branch of the left ... the left anterior descending coronary artery. E. The left main stem is about 4 cm long
Last Answer : Ans: A
Description : In which plants vascular bundles are closed? -Biology
Last Answer : answer:
Description : Why are the vascular bundles of dicots called open bundles? -Biology
Description : Examples of radial vascular bundles -Biology
Description : $ Secondary growth occurs in those plants which have closed vascular bundles. ! Cork is produced by intrafascicular cambium.
Last Answer : $ Secondary growth occurs in those plants which have closed vascular bundles. ! Cork is produced by ... D. If both As and R are wrong.
Description : $ Biosphere is a closed system ! Closed vascular bundles are having intrafascicular cambium.
Last Answer : $ Biosphere is a closed system ! Closed vascular bundles are having intrafascicular cambium. A. If both As ... wrong D. If both As and R are wrong.
Description : In fern, vascular bundles are: (a) Radial (b) Hadrocentric (c) Open (d) Leptocentric
Last Answer : Ans. ((b))
Description : Decot root having more than six vascular bundles are found in (a) Pea (b) Sunflower (c) Ficus (d) Ranunculus
Last Answer : Ans. ((c))
Description : Monocot root differs from dicot root in having (a) Open vascular bundles (b) Scattered vascular bundles (c) Well developed pith (d) Radially arranged vascular bundles
Last Answer : Ans:(c)
Description : Dicot root having more than six vascular bundles is (a) Pea (b) Sunflower (c) Ficus (d) Ranunculus
Last Answer : Ans:(a)
Description : Radical vascular bundles are those in which?
Last Answer : xylem and phloem occur on the different radii
Description : Why are xylem and phloem called vascular bundles?
Last Answer : Since xylem and phloem occur together they are called vascular bundles.
Description : Which one of the following organisms is correctly matched with its three characteristics? (a) Pea: C3 pathway, endospermic seed, vexillary aestivation (b) Tomato: twisted aestivation, axile ... imbricate aestivation, axile placentation (d) Maize: C3 pathway, closed vascular bundles, scutellum
Last Answer : (c) Onion: bulb, imbricate aestivation, axile placentation
Description : Pericycle of roots produces (a) mechanical support (b) lateral roots (c) vascular bundles (d) adventitious buds.
Last Answer : b) lateral roots
Description : A major characteristic of monocot root is the presence of (a) vasculature without cambium (b) cambium sandwiched between phloem and xylem along the radius (c) open vascular bundles (d) scattered vascular bundles
Last Answer : (a) vasculature without cambium
Description : In the dicot root the vascular cambium originates from (a) tissue located below the phloem bundles and a portion of pericycle tissue above protoxylem (b) cortical region (c) parenchyma between endodermis and pericycle (d) intrafascicular and interfascicular tissue in a ring.
Last Answer : (a) tissue located below the phloem bundles and a portion of pericycle tissue above protoxylem
Description : In barley stem vascular bundles are (a) closed and scattered (b) open and in a ring (c) closed and radial (d) open and scattered.
Last Answer : (a) closed and scattered (
Description : Some vascular bundles are described as open because these (a) are surrounded by pericycle but no endodermis (b) are capable of producing secondary xylem and phloem (c) possess conjunctive tissue between xylem and phloem (d) are not surrounded by pericycle.
Last Answer : (b) are capable of producing secondary xylem and phloem
Description : Ground tissue includes (a) all tissues external to endodermis (b) all tissues except epidermis and vascular bundles (c) epidermis and cortex (d) all tissues internal to endodermis.
Last Answer : b) all tissues except epidermis and vascular bundles
Description : Closed vascular bundles lack (a) ground tissue (b) conjunctive tissue (c) cambium (d) pith.
Last Answer : (c) cambium
Description : 82. Closed vascular bundles lack (1) Pith (2) Ground tissue (3) Conjunctive tissue (4) Cambium
Last Answer : Cambium
Description : Medullary vascular bundles are found in
Last Answer : 3
Description : In monocots showing secondary growth, the secondary vascular bundles are found embedded in
Last Answer : In monocots showing secondary growth, the secondary vascular bundles are found embedded in – Conjunctive tissue
Description : Inverted cortical vascular bundles are found in
Last Answer : Inverted cortical vascular bundles are found in – Nyctanthes stem
Description : scattered vascular bundles embedded in the ground tissue with no definite arrangement is found in
Last Answer : scattered vascular bundles embedded in the ground tissue with no definite arrangement is found in – Stem of monocots
Description : Difference between a closed and an open vascular bundle? -Biology
Description : What is a bicollateral vascular bundle? -Biology
Description : Define a secondary vascular bundle. -Biology
Description : What is a conjoint vascular bundle? -Biology
Description : Difference between collateral and bicollateral vascular bundle. -Biology