Description : Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms. (a) Perianth and two integuments (b) Embryo development and ... of resin duct and leaf venation (d) Presence of vessel elements and absence of archegonia
Last Answer : (d) Presence of vessel elements and absence of archegonia
Description : Cell sap is found inside a. Protoplasm b. Cytoplasm c. Nucleoplasm d. Vacuole
Last Answer : d. Vacuole
Description : Cross between hybrid and recessive parent is: (a) Back cross (b) Test cross (c) Monohybrid cross (d) Dihybrid cross Ans. (b) ................................................----- ... - PMT, AIIMS, MBBS,lucknow 1. Largest egg of plant kingdom belongs to: (a) Cycas (b) Pinus (c) Psidium (d) Mangfera
Last Answer : Ans. ((a))
Description : The species of Pinus, seeds of which are edible is/ chilgoza comes from: (a) P. roxburghii (b) P. gerardiand (c) P. monophylla (d) P. sylvestris
Last Answer : Ans. ((b))
Description : What tissue present in leaves of Pinus conducts food and water laterally? (a) Transfusion tissue (b) Phloem (c) Xylem (d) Medullary rays
Description : Rubber is commercially obtained from: (a) Euphorbia (b) Betula (c) Hibiscus (d) Pinus
Description : Number of cotyledons in Zea mays, Cycas and Pinus respectively are: (a) 1, 2, 4 (b) 1, 2, many (c) 2, 2, many (d) 2, 1, 4
Description : The ovuliferous scale of Pinus is a part of ........... a) megasporophyll b) microsporophyll c) ovule d) dwarf shoot.
Last Answer : c) ovule
Description : Which of the following species of Pinus has trifoliar spur…. a) P. sylvestris b) P. merkusii c) P. gerardiana ' d) P. wallichiana
Last Answer : c) P. gerardiana '
Description : Which of the following species of Pinus is commonly known as chir pine ......... a) P. roxburghii b) P. wallichiana c) P. insularis d) P. gerardiana
Last Answer : a) P. roxburghii
Description : Which of the following species of Pinus is not found in India ............. a) Pinus merkusii b) P. gerardiana c) P. wallichiana d) P. maritima.
Last Answer : d) P. maritima.
Description : In Pinus pollination is........... a)anemophilous b)hydrophilons c)zoophilons d)cheriopterous.
Last Answer : a)anemophilous
Description : Cycadeoidea is also known as…. a)Lyginopteris b)Bennettites c) Pinus d)Gnetum
Last Answer : b)Bennettites
Description : Resin and turpentine are obtained from (a) Cycas (b) Pinus (c) Cedrus (d) Abies.
Last Answer : (b) Pinus
Description : Which of the following is not a characteristic of coniferales........ a)pycnoxylic wood b)motile male gametes c)presence of resin canal d) fertilization siphonogamous
Last Answer : b)motile male gametes
Description : Assertion : Epithelium cells get their nutrientes from Adjacent cells . Reason : In epithelium tissue large intercellular spaces are present
Last Answer : Assertion : Epithelium cells get their nutrientes from Adjacent cells . Reason : In epithelium tissue ... . If both Assertion & Reason are false.
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 : Sensitivity to hot and cold foods soon after cavity preparation and placement of GIC and composite resin in an upper incisor tooth is due to: A. Mechanical trauma due to cavity preparation B. Chemical C. Heat from GIC settings
Last Answer : A. Mechanical trauma due to cavity preparation
Description : Stem tailed drill seen in which plant ?
Last Answer : : Stem tailed drill is found in bone marrow plants.
Description : What are the totiptent stem cells of plants ?
Last Answer : : Totiptent stem is the type of cell from which it is possible to produce plant seedlings directly.
Description : Arrangement of leaves on a stem branch is: (a) Venation (b) Venation (c) Ptyxis (d) Phyllotaxy
Last Answer : Ans. ((d))
Description : Aerosols having carbon and fluorine compounds are chiefly released by: (a) Refineries (b) Automobiles (c) Industries (d) Jets 3. Coir of commerce is obtained from: (a) Endocarp of coconut (b) Mesocarp of coconut (c) Stem of jute (d) Leaves of coconut
Description : Stomata in bryophytes are present in the of: (a) Capsule (b) Leaf (c) Stem (d) Seta
Description : Stem is reduced in (a) Rhizome (b) Corm (c) Bulb (d) Tuber
Last Answer : Ans. ((c))
Description : In spite of several angiospermic features Gnetum is a gymnosperm because…. a) polyembryony is a common features b) prothallial cell is present in the male gametophyte c) seed is naked d) stem exhibit anomalous secondary growth
Last Answer : c) seed is naked
Description : Sphenopteris hoeninghausii is the….. a)stem b)root c)leaves d)ovule
Last Answer : c)leaves
Description : Name the sub-aerial stem modification seen in free floating aquatic plants. How does it help in vegetative propagation?
Last Answer : Ans: Off-set is the sub-aerial modified stem seen in free floating hydrophytes. It is brittle and has leaves and roots at its only node. When broken accidentally, it is separated from parent plant and can lead independent life.
Description : Which aerial stem modification is concerned with vegetative propagation? Give two examples.
Last Answer : Ans: Bulbils. Ex: Agave americana, Dioscoria bulbifera
Description : Which underground stem modification does not possess roots? Mention its scientific name.
Last Answer : Ans: Stem tuber is the underground stem modification that does not possess roots. Solanum tuberosum is its scientific name.
Description : Banana is propagated by a) Stem cutting b) Tillers c) Suckers d) Crown
Last Answer : c) Suckers
Description : A common example of stem tuber is a) Ginger b) Garlic c) Onion d) Potato
Last Answer : d) Potato
Description : Onion and garlic are examples of a)Rhizome b) corm c) stem tuber d) bulb
Last Answer : d) bulb
Description : Tissue culture is a good technique to a) Cross two varieties b) Rapidly increase the size of a trees by strengthening the stem c) Eliminate virus d) Improve yield of crops
Last Answer : c) Eliminate virus
Description : In the bacteria: (1) Mesosome is present (2) Nucleoid represents the genome (3) Ribosomes are found in cytoplasm (4) Histone proteins complexed with DNA
Description : Embryo sac represents: (a) Megaspore (b) Megagamete (c) Megasporophyll (d) megagametophyte
Description : How could the camera on an iPhone be represented as a large vacuole in a plant cell?
Last Answer : answer:Is a vacuole round? Then the camera lense is round. Pretty straight forward. Aside from that, your screwed. You should have made a jello cell or something. If you are really desperate, and I would never do ... by pixels or something. We can't do any more for you, its up to you to figure out.
Description : What if Ian is looking at cells using a microscope. He sees a nucleus and a large vacuole in the central area of a cell. What type of cell is he most likely looking at?
Last Answer : I need help on my science homework!!!
Description : (CBSE 2011): A permanent slide shows thin walled isodiametric cells with a large vacuole. The slide contains: (a) Parenchyma cells (b) Nerve cells (c) Sclerenchyma cells (d) Collenchyma cells
Last Answer : (a) Parenchyma cells
Description : In multicellular animals, a group of similar cells along with intercellular substances perform a specific function. Such an organisation is called
Last Answer : In multicellular animals, a group of similar cells along with intercellular substances perform a specific ... B. Orgen C. Body D. Orgen system
Description : Intercellular junction which helps in exchange of substances is :
Last Answer : Intercellular junction which helps in exchange of substances is : A. Tight junction B. Gap junction C. Interdigtation D. Desmosome
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
Description : The non-nutrient chemicals which acts as intercellular messengers and are produced in trace amounts are known as
Last Answer : The non-nutrient chemicals which acts as intercellular messengers and are produced in trace amounts are ... Enzymes B. Mucous C. Hormones D. None
Description : The initiation of a humoral immune response involves a complex interaction of the antigen, cells and intercellular messengers. Which of the following statement(s) concerning the initiation of the ... various cellular components of the immune system d. An antigen must be a living microorganism
Last Answer : Answer: a, b Stimulation of the immune system occurs after a variety of antigen-presenting cells (B lymphocytes, macrophages, dendritic cells, and Langerhans cells) act to engulf ... polysaccharides), most antigens require coordinated efforts of the various cellular components of the immune system
Description : What are the main cells of the connective tissue proper? What is the name given to the intercellular material that surround these cells?
Last Answer : The main cells of the connective tissue proper are the fibroblasts, cells that secrete the intercellular material. These cells are the majority of cells of the tissue. Fibroblasts later ... interstitial matrix, or just matrix. Cell Tissue - Image Diversity: fibroblast fibrocyte interstitial matrix
Description : Which of the following statements is correct in relation to the endocrine system? (a) Non-nutrient chemicals produced by the body in trace amounts that act as intercellular messenger are known as ... in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones.
Last Answer : (a) Non-nutrient chemicals produced by the body in trace amounts that act as intercellular messenger are known as hormones.
Description : In a pond ecosystem, benthos means: (a) Zooplanktons on water surface (b) Large fishes eating small ones (c) Primary consumes in the bottom of a pond (d) All phytoplankton’s
Description : A salt gives white residue in charcoal cavity test but in cobalt nitrate test it gives pink mass. It represents :
Last Answer : A salt gives white residue in charcoal cavity test but in cobalt nitrate test it gives pink mass. It represents : A. ` ... `Mg^(+2)` D. `PO_(4)^(-3)`
Description : The figure given below shows a small part of human lung where exchange of gases takes place. Select the option which represents labelled part (A, B, C or D) correctly identified along with its function. ... Exchange of O2 and CO2 takes place here (d) B : Red blood cells - Transport of CO2 mainly
Last Answer : (b) A : Alveolar cavity - Main site of exchange of respiratory gases
Description : In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the ... pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.
Last Answer : (c) the microsporangium in which pollen grains develop
Description : When incrementally placing a large composite resin restoration, what effect does an air-inhibited layer on the surface of the first increment have on the bond between the first and the second increments? A. ... B. It is desirable and improves the bond C. It is undesirable and should be removed
Last Answer : B. It is desirable and improves the bond