All mammals are not, viviparous; some are egg-laying, i. e.,, oviparous e. g., duck -billed platypus., Embryogenesis refers to the process of, development of embryo from the zygote., During embryogenesis, zygote undergoes, cell divison (mitosis) and cell, differentiation. An ESP has, electrode wires that are maintained at, several thousand volts, which produce a, corona that releases electrons. The lamina can have, different types of incisions, which may, reach upto half (-fid), more than half (partite) or near the base or midrib (-sect)., Depending upon the pinnate or palmate,, 22. 8, meters tall and well-built body. Assertion: Nicotine is an alkaloid found in, tobacco., Reason: It has several uses., 79. Therefore,, photorespiration is a wasteful process., C4 plants are more efficient than C3 plants., The biosynthetic phase is also known as, th e dark phase or Blackman phase., Biosynthetic phase (Dark or Blackman's, Reaction) C3 (Calvin cycle) C4 (dicarboxylic, C4 acid cycle) e. g., Euphorbia corollata,, Euphorbia maculata. This reversion is, known as detorsion and it is a very, characteristic of the whole group of the, euthyneura. Males are conventionally shown, to the left of the vertical age axis and, females to the right. Assertion Reason Questions for Biology Chapter 24 Sexual Reproduction in Flowering Plants. Assertion: In gymnosperms, plants lack welldeveloped vessels and fibres., Reason: Companion cells are absent in, gymnosperm., 65. The receptor, for gustatory sensation are located in taste, buds on tongue., The light sensitive inner layer of eyeball.
It reduces catabolism of, proteins, breakdown and oxidation of fats, by decreasing the enzmes which induce, gluconeogenesis. B),, creatine phosphate and ATP in the muscle, fibre. It is generally believed that, competition occurs when closely related, species compete for the same resources, that are limiting, but it is not entirely true., Totally unrelated species could also, compete for the same resource. Schleiden and Schwann, together formulated the cell theory. D) F. Went isolated auxin from tips of, coleoptiles of oat seedlings. B) The physiological mechanism of flowering, in plants is controlled by two factors__ light, period and low temperature. Assertion reason question on grade 11 placentation and service. Cross-pollination is further, classified depending on whether the, pollination has occurred between two, flowers on the same plant (geitonogamy), or between two flowers on different plants, (xenogamy)., (d) Honey bee visit flowers to gather nectar, and turn it into honey. Phloem fibres provide, mechanical strength. B) Based on his studies, Schwann proposed, the hypothesis that the bodies of animal, and plants are composed of cells and, products of cells. C) Phenylketonuria is an inborn, autosomal,, recessive metabolic disorder in which the, homozygous recessive individual lacks the, enzyme phenylalanine hydroxylase needed, to change phenylalanine (amino acid) to, tyrosine (amino acid) in liver. Reason: The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen. In open vascular, bundles, a layer of cambium will be present, between the xylem and phloem and thus,, they shows secondary growth., A vascular bundle in which xylem encircles, the central strand of phloem is known as, amphivasal bundle, also called leptocentric, bundle. A distinct layer of cuticle is present, on the adaxial and abaxial, cuticle prevents excessive transpiration., Spongy parenchyma is reduced in, xerophytic leaves.
Assertion: Water is required for fertilization, process in ferns., Reason: Malic acid of archegonial neck attracts, antherozoids., 50. Mosses, grow together with lichens, in bunch, make, a mat over the substratum. The amount of oxygen is very, high. Wall pressure is the force exerted, by the cell wall over the protoplast. Assertion reason question on grade 11 placentation and learning. Feeding of anti-thyroid, substances like thiourea to tadpoles, delays. Laying down pipelines, to deliver CNG through distribution points/, pumps is another difficulty faced in, switching over to CNG as an automobile, fuel., (c) Photochemical smog is a condition that, develops when primary pollutants (such, as oxides of nitrogen and volatile organic, compounds) interact under the influence, of sunlight to produce a mixtur e of, secondary pollutants. They show, interactions and inter-dependence., (a) Soils of Indo-Gangetic plains and the Indus, valley are highly fertile and suitable for,, 8.,, (d),, 9.,, (b),, 10. The endometrium undergoes, cyclical changes during menstrual cycle, while the myometrium exhibits strong, contraction during the delivery of the baby., Menstrual phase is the phase of menstrual, flow which continues for 3-5 days and, involves discharge of blood along with, casting off endometrial lining due to, reduced titre of both estrogen and, progesterone. They are planted in autumn, that, form seedlings in which form they cover, winter. A) Lactational amenorrhea (absence of, menstruation) method is based on the fact, that ovulation and therefore the cycle do, not occur during the period of intense, lactation following parturition. The hypothalamus, is the basal part of diencephalon (forebrain), which contains several groups of, neurosecretory cells called nuclei that, produce hormones.
It is embedded in the uterine wall. Each Cry protein is toxic to a, different group of insects. Soil is, sandy, there is little climatic variation and, increased moisture., Tyloses are most abundant in heart wood, (duramen), where wood parenchyma is, scarce, in the xylem of woody plants as, response to injury or as protection from, decay in heartwood. Assertion: Nitrogen-fixing bacteria in root, nodules of legumes survive in oxygen-depleted, cells of nodules., Reason: Leghaemoglobin completely removes, oxygen from the nodule cells., 25. DNA strand built up of, Okazaki fragments is called lagging strand., As one strand grows continuously while, the other strand is formed discontinuously,, DNA replication is semidiscontinuous., 19. Assertion reason question on grade 11 placentation and order. D) Prophase which is the first stage of mitosis, follows the S and G2 phases of interphase., In the S and G2 phases, the new DNA, molecules formed are not distinct but, interwined. Assertion: Both words are separately underlined, in binomial nomenclature., Reason: Underlining indicates their Latin origin., 24. It also brings, about development of secondary sex, characters., Spermatogenesis starts at the age of, puberty due to significant increase in the, Gonadotropin Releasing Hormone (GnRH)., The male releases large number of sperms, inside female reproductive tract to increase, chances of fertilisation., Acrosome contains enzymes that help the, sperm penetrate the ova during the, fertilisation process., The normal temperature of the testes in the, scrotum is about 2-2.
Assertion: An angiospermous flower represents the modified condensed shoot which performs the function of sexual reproduction. A food web, consists of many food chains. Intestinal juice or succus, entericus contains maltase, isomaltase,, sucrase (invertase), lactase and adextrinase which act on disaccharides, produced by the action of amylases to form, the simple absorbable form glucose., Mucosal epithelium has goblet cells which, secrete mucus that helps in lubrication. In most parts of the brain, the grey, matter containing the nerve cells is situated, on the surface while the white matter made, of fibres is located deep inside the brain;, but in the spinal cord, the grey matter is, internal and white matter occurs outside., The nervous system of human comprises, of Central Nervous System – brain and, spinal cord., Peripheral Nervous System – consists of, nerves present between brain and body, parts., The spinal cord extends downwards from, the brain stem. C) Synapsis occurs during zygotene stage., Synapsis is the pairing of homologous, chromosomes which leads to the formation, of bivalents., 17. Dope test is not related to alcohol., Dope test is a blood test to know whether, a person used any drug to improve their, performance., 88. Assertion: Vestibular apparatus helps us in, maintaining balance of body and posture., Reason: Due to the arrangement of semicircular, canals of vestibular apparatus, movement of, head in any direction will stimulate sensory cells, to maintain dynamic equilibrium., 40. However, as, water is available mostly in the soil, only the, underground root system is specialized to, absorb water. These produce blood cells and, haemoglobin which is dissolved in blood, plasma., Earthworms are known as 'friends of, farmers' because they make the soil loose, and porous by their burrowing habit. But when its blood level, exceeds 180 mg, some of the filtered, glucose is left unabsorbed in the tubules, and consequently appears in the urine., Some substances which are either totally, reabsorbed actively or most of their, amounts are reabsorbed actively are called, high threshold substances. When a species, becomes extinct, the plant and animal, species associated with it in an obligatory, way also become extinct. Bio] (a) How are variations useful for species if there is drastic. They, were even once suggested to have played a, significant role in the evolution of cells and,, therefore, of life itself. But food in the, stomach may increase the amount of time, it takes for the blood alcohol to reach its, highest level. They are, generally taken by inhalation and oral, ingestion.
Its length is, according to the height of individual. The male cone comprises of a, number of small spirally arranged, microsporophylls. Assertion: Holoblastic cleavage with almost equal sized blastomeres is a characteristic of placental animals.Reason: Eggs of most mammals, including humans, are of centrolecithal type. Calcium, carbonate is continuously secreted by the, coral colony., (c) Flagella is absent in class Rhodophyceae., (a) Red algae generally grow attached to rocky, stones. However, enzymes isolated, from organisms who normally live under, extremely high temperatures (e. g., hot vents, and sulphur springs) are stable and retain, their catalytic power even at high, temperatures (upto 80°–90°C)., The activity of an enzyme is highly specific, to the presence of chemicals that bind to, the enzyme. Hence genetic drift, is a mechanism of evolution that acts in, concern with natural selection to change, species characteristics over time.
A),, without any mixing up, i. e., two separate, circulatory pathways are present in these, organisms, hence, these animals have, double circulation., Left ventricle has thickest muscles because, it pumps the blood to the whole body., In the human heart, there is no mixing of, deoxygenated and oxygenated blood due, to the presence of inter - atrial and inter ventricular septum. Assertion: Spermathecae are the main part of, reproductive system of annelida., Reason: These help in sperm transfer., 31. Rudolf Virchow (1855), first explained that cells divided and new, cells are formed from pre-existing cells, (Omins cellua e cellua). Assertion: In plant tissue culture somatic, embryos can be induced from any plant cell., Reason: Any viable plant cell can differentiate, into somatic embryos., [AIIMS 2003],, 225,, 40. So, is, found in fishes and larval forms of, amphibians., In amphibians, fertilization is external,, hence, males and females produce a lot of, gametes and release in water to maximize, the chances of fertilization. Zinc is, required for carboxypeptidase activity., 39. The sensations, of different colours are produced by, various combinations of these cones and, their photopigments. The protoplasm of, plasmodial slime mould is considered as, purest in the living world. The nucleus controls the, functions of cell. Non-gonococcal urethritis (NGU), describes inflammation of the urethra, for, which the cause is unknown.
Here, the floating, or aerial leaves and the submerged leaves, are of different kinds; the former are, generally broad, more or less fully, expanded and undivided or merely lobed;, while the latter are narrow, ribbon-shaped,, linear or much dissected. In, addition, melatonin also influences, metabolism, pigmentation, the menstrual, cycle as well as our defence capability., (a) The thyroid gland secretes thyroxine and, triiodothyronine hormone. A),, the increased risks of leukemia among, these workers between 1986 and 2006., Green house effect is due to the occurrence, of high carbon dioxide content, high, vapour content and glass walls. It is because in gaseous nutrient, cycles, e. g., carbon, hydrogen, oxygen,, nitrogen, remains of nutrients in circulation, are more or less uniform. This happens only in C3-plants., 52. The grana lamellae have both, PS I and PS II and the stroma lamellae lack, PS II as well as NADP reductase enzyme., 17. But here, similar cells, are arranged neither in permanent layer nor, masses to form tissues., (a) All members of animalia are multicellular,, but all of them do not exhibit the same, pattern of organization of cells. Rate of, respiration in C3 and C4 plants are not same, as they have different types of leaf, anatomy (arrangement of chloroplast)., 51. A) Eutrophication is a gradual increase in, biological productivity of an aquatic, ecosystem with time. A) A sharp transition between two or more, diverse communities, for example, between, forest and grassland, is known as ecotone., The ecotonal community commonly, contains many of the organisms of each of, the overlapping communities and in, addition, organisms are characteristic of, and often restricted to ecotone. In case of physical exercise,, the increased demand of oxygen initiates, a cascade, which coordinates lungs, heart, and blood vessels of the body to fulfil the, demand.,, 16. ",, that later renamed as hyracotherium.
By, mitotic divisions of the meristematic cells, new cells are produced. Assertion: In Liverworts, both male and female, sex organs may be present on same thalli or, different thalli., Reason: A sporophyte is formed from the zygote, which is differentiated into foot, seta and, capsule., 42. Biceps and triceps, are called antagonistic muscles. A) Artificial insemination (AI) or intrauterine, insemination (IUI) is way of treating, infertility.
The light, bands are made of actin and are called Ibands or isotropic band, whereas the dark, bands are called 'A' or anisotropic bands, and contain myosin. Assertion: Myasthenia gravis is an autoimmune, disease., Reason: Immune system rejects the transplant, muscles., 27. Assertion: ISD is the most powerful psychedelic., Reason: Psychedic drugs cause hallucination., 81. Hence, sterilization, enables growth of only the desired microbe., It is also evident that along with genetic, engineering, sterilization is also essential, for successful biotechnological experiments., 44.
The, cryptomerozoites formed during preerythrocytic schizogony may enter the, human RBCs to start the erythrocytic, schizogony, while some of them enter new, liver cells to repeat hepatic (liver), schizogony. The heterocyclic compounds in, nucleic acids are the nitrogenous bases, named adenine, guanine, uracil, cytosine, and thymine. The canopy layer, provides protection from strong winds and, storms, while also intercepting sunlight, and precipitation, leading to a relatively, sparsely vegetated understory layer., 7., (a) In physical geography, tundra is a type of, biome where the tree growth is hindered, by low temperatures and short growing, seasons.
Choreography by Hope Clarke. From the Ben Hecht and Charles MacArthur play The Front Page. Anticipated Anime Headed To The Big Screen. With Michi Barall, Kevin Bernston, Mark Danisovszky, Louis Fanucchi, Katie Grant, Rodney Scott Hudson, Ira Marks, Tom McGowan, Jacques C. Smith. Slide Photography by Harry Hendrickson. Lighting Design by Anne Militello.
Text by Tim Sawicki & Pig Iron Theatre Company. Music by John Ewbank. Sound Design by Kurt Kellenberger. Sound Design by Victor Zupanc.
Written by Arthur Kopit & Anton Dudley. Directed by George Tabori. Video Design by Elaine J. McCarthy. Ticket to paradise showtimes near the lot la jolla ca 92037. Based upon A Cool Million by Nathaniel West. Music Performed by the Red Clay Ramblersby Clay Buckner, Mike Craver, Jack Herrick, Tommy Thompson, Jim Watson, Christopher Frank. Directed by Regina Taylor and Susan V. Booth. Sound Design and Incidental Music by Jeremy Grody. See RETURN TO SEOUL, now showing!
Musical Direction / Conducting by Marco Paguia. From the play by Moliére. Directed by Kermit Kegley. Ticket to paradise showtimes near the lot la jolla cove. Dance Music Arrangements by Mark Hummel. Dramaturgy by Janice Parah. April 5 – 17, 2016; Mandell Weiss Theatre. With Michael Arden, Lucas Coleman, Julian Decker, Mary Joe Duggan, Ian Patrick Gibb, William Thomas Hodgson, Beth Kirkpatrick, Erik Liberman, Samantha Massell, Neal Mayer, Nora Menken, William Michals, Patrick Page, Ciara Renee, Anise Ritchie, Vincent Rodriguez III, Richard Ruiz, Andrew Samonsky, Brian Smolin. Translated by Christopher Fry.
With Parnia Ayari, Leandro Cano, Roxane Carrasco, Victor C. Contreras, William Thomas Hodgson, Jyl Haruye Kaneshiro, Salomon Maya, Robert J. Milz, John Padilla, Dave Rivas, Jorge Rodriguez, Bianca Sanchez, Herbert Siguenza, Kinan Valdez, Lakin Valdez. Written by Ketti Frings. Subsequently produced at the Classic Stage Company in New York, Winter, 1997 – 1998. Written by Billy Crystal. With Stephanie Beatriz, Rodney Gardiner, David Kelly, Terri McMahon, René Millán, Richard Montoya, Kimberly Scott, Herbert Siguenza, Daisuke Tsuji. Created and Performed by John Leguizamo. Set Design by Allen Moyer. With Ellen M. Ticket to paradise showtimes near the lot la jolla tickets. Bethea, Linda Cavell, SaMi Chester, John Cothran Jr., Denise Diggs, Judyann Elder, June Jones, Victor Mack, Robert A. Owens, F. William Parker, Keith Randolph Smith.
Projection Design by Marc I. Rosenthal. Choreography by Anthony van Laast. Written by Melissa James Gibson. 217 Grand Street 11211. Written by Andre Roussin. Orchestrations by Robby Merkin. Lighting Design by Michel Charbonneau. Directed by Fernando Lamas.
Improbable Theatre Produced by Nick Sweeting. Directed by Warren Carlyle and Michael Unger. Choreographed by David Dorfman. Set Design by George Tsypin. Sound Design by James LeBrecht.
Sound Design by Rob Milburn. Written by José Rivera. Book by William Hauptman. Music Direction by Daryl Walters. Costume Design by Suzanne Cranfill. Written by Terence Rattigan. Musical Direction and Supervision by Ted Sperling.
Directed by Karen Hines. Operation Fortune: Ruse de guerre. Reading Cinemas Town Square. Sound Design by DJ Reborn. In Viaggio: The Travels of Pope Francis. Find Who You Are in RETURN TO SEOUL. Fight Choreography by Erik Fredricksen. Costume Design by Moria Siné Clinton. Lighting Design by Malcolm Sturchio. Directed by Harry Ellerbe. Sound Operator: Carole Groia. Directed by Marianne Weems. Written by Anton Chekhov. Written by Richard Montoya.
Orchestrations by Don Sebeskey. Music Direction and Vocal Arrangements by Ted Sperling.