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The pancreatic, juice contains starch digesting-enzyme,, called pancreatic a-amylase which converts, starch into maltose, isomaltose and adextrins. Their, nuclei are located at the base. B),, ¯,, Less or no lactase, ¯,, Lactose remains undigested, ¯,, Undigested substances fermented,, 30. Green muffler or green belt, vegetation is rows of trees and shrubs, grown and maintained to serve as noise, absorbers. Assertion: RNA produced during transcription, in eukaryotic cells cannot be straight away used, in photosynthesis., Reason: RNA splicing phenomena helps in the, removal of exons.,, Assertion Reason Question Bank, 50. Assertion-Reason Question Bank - Disha Experts.pdf - Biology - Notes. The plant body may be unicellular,, colonial or filamentous. At the base of the aorta are, present three membranous, pocket-shaped, semilunar valves.
On the other hand,, shade adapted plants also called as, sciophytes generally have low, photosynthetic, respiratory and metabolic, activities. A) Atherosclerosis refers to the deposition of, fatty substances specially cholesterol and, triglycerides in the tunica of internal and, smooth muscles of medium sized and large, arteries. It takes place by breakage, and reunion of chromatid segments., Breakage, called nicking, is assisted by an, enzyme endonuclease and reunion termed, annealing, is aided by an enzyme ligase., Crossing over leads to recombination of, genetic material on the two chromosomes., 25. Assertion reason question on grade 11 placentation and order. D),, correct identification. Secondary treatment, involves microbes, thus it is also called, biological treatment., Biogas is an excellent example of beneficial, functions of microbes. A, chromosome has two chromatids, hence a, bivalent has 4 chromatids., 24.
Kept by humans for a commercial, purpose. Assertion: Major cause of ozone depletion is, CFCs but other greenhouse gases also have a, negative effect on ozone layer., Reason: Greenhouse gases increases the, temperature of troposphere but decreases the, temperature of stratosphere which facilitate the, ozone depletion., 42. The microspheres, contain mainly proteins, polysaccharides, and some water. Page 45: 41,, Morphology of Flowering Plants,, Solutions, 1., 2.,, 3.,, 4.,, 5.,, 6.,, 7.,, (a) Root cap is the terminal part of root., (c) A number of thin, thread-like branched, roots develop from the base of the stem in, fibrous root system. No work can be carried, out in equilibrium state. The kneaded flour is, kept at a warm temperature for few hours., It swell up. Pfr form of phytochrome is the, active form. Bio] (a) How are variations useful for species if there is drastic. Finches were formed due, to divergent evolution (Adaptive radiation), to avoid interspecific competition., The common birds of Galapagos islands,, the finches were markedly different from, the finches of main land.
The reproductive tracts open, outside through cloacal aperture., Parental care is clearly seen in amphibians., They protect their eggs by keeping them –, (i) In enclosures in the water, (ii) In holes, near water, (iii) In nests, on trees or on rocks,, overhanging water, (iv) In transparent, gelatinous bag in the water, (v) On trees or, in moss, away from water. Assertion reason question on grade 11 placentation and use. In this way, adaptive traits preserved by, natural selection will gradually change the, charactertistics of a species., Reason: This explains the origin of species.,, 47. These provide, arthropods an advantage of protection on, land and the ability to move quickly., In molluscs, the space between the mantle, and the hump is called mantle cavity in, which feather-like gills are present. Attend Live Classes using Any Device be it Phone, Tablet or Computer. Assertion: The muscularis externa of the stomach is unique from other organs of the gastrointestinal tract.
B) In the soil, the accumulation of CO2 appears, to have a greater inhibitory effect on water, absorption than do lowered oxygen tensions., An increase in CO2 causes an increase in, the viscosity of protoplasm and a decrease, in the roots permeability to water thereby,, bringing about a retardation in water, absorption., 14. The atmosphere, contains approximately 80% nitrogen gas, which cannot be directly utilized by most. It comes from, respiration that is aerobic resopiration. Assertion: The zygote developed from sexual, reproduction is diploid., Reason: In sexual reproduction, haploid gametes, fuse and form zygote., 27. Therefore, in the absence, of bile, the fats remain unabsorbed and, consequently are eliminated out of the, body in the faeces., Water and electrolytes are completely,, 38. The liver is, the principal organ for the excretion of, cholesterol, bile pigments (bilirubin and, biliverdin) and inactivated products of, steroid hormones, some vitamins and many, drugs. Reason: The lining of uterus is always thick and spongy. Assertion reason question on grade 11 placentation text. This, leads to a variety of disease called, autoimmune diseases.
The core of these, coacervates was majorly formed of protein,, polysaccharides and some water and was, partially isolated from the surrounding, aqueous solution having lower amount of. Assertion: Cellular endosperm is formed by both, nuclear division and wall formation., Reason: It lacks haustoria., 52. Assertion: IgM is a type of immunoglobulin which cannot cross the placenta. Reason: IgM is pentamer immunoglobulin, joined by J chain. The sperm, used in artificial insemination may be, provided by either the woman's husband, or partner (partner sperm) or by a known or, anonymous sperm donor., 36. Its bright green, colour is not because of chlorophyll, containing chloroplasts, but due to the, presence of symbiotic zoochlorallae,, Chlorella vulgaris, a unicellular green, alga, that lives in its gastrodermal cells., (a) Coelenterates possess a very primitive, type of nervous system. At places, groups, of epidermal cells-tactile organs and, patches are present.
In birds,, shedding and replacement of feathers is, moulting or ecdysis which takes place, gradually, that is, about six weeks on an, average. These, show that it is has a simple organization, compared to vertebrates because many, important craniate structures are lacking, in it. Examples are, Sagittaria, Ranunculus aquatilis,, Limnophila heterophylla., The palmate compound leaf is one in which, the petiole bears leaflets at the tip like the, fingers of the palm. Assertion: Polytene chromosomes have a high, amount of DNA., Reason: Polytene chromosomes are formed by, repeated replication., [AIIMS 2006], 55. When F1 offsprings are, crossed with the dominant parents, all the, F2 generation offsprings develop dominant, character. B) During zygotene, because of the pairing of, the homologues, the nucleus contains half, the number of chromosomes.
The flagella helps to swim, in aquatic habitats for proper dispersal. The, cambial activity continues in this region., 53. The scrotum helps in maintaining, low temperature of the testes (2-2. Viruses are, nucleoprotein complexes that cause, disease. C) Biotechnology is the use of biological, processes, organisms, or systems to, manufacture products intended to improve, the quality of human life. Assertion: Persistent sepals of Physalis are, called accrescent., Reason: In Guava, the sepals are marcescent., 45. Assertion: Methanogens are obligate, anaerobes., Reason: Halophiles are salt loving bacteria., 23. Some deep water red algae are, calcareous and build up hard stony thalii, responsible for the production of lime, stones and coral reefs., (a) In algae, sexual reproduction takes place, by fusion of two gametes. B) Activity of sense organs is related with two, types of neurons (afferent and efferent)., The neurons which pass nerve impulses, from the body organ to the brain is called, afferent neuron.
These have been, described to contain only 1 initiation site,, who gave one mRNA-one polypeptide, chain hypothesis., The terminator codon is present on mRNA, molecule, which stops the formation of a, polypeptide chain at that point, the three, termination codons are UGA, UAA and, UAG., 38. Excessive use of fertilizers often, leads to accumulations of nitrates in water., In infants, excess nitrate reacts with, haemoglobin to form nonfunctional, methaemoglobin that impairs oxygen, transport. Hatch and Slack proposed a new,, 40. A) Fatty acids which lack any double or triple, bond in their hydrocarbon chain are known, as saturated fatty acids. Yoghurt is produced, by curdling milk with the help of Streptococcus thermophilus and Lactobacillus, bulgaricus. By retaining more Na+ in the blood, it, increases the reabsorption of water from the, urine by the osmotic effect of Na+. At a later stage the, suspension shows in addition to free, nuclei, several cells each enclosing variable, number of nuclei., Cellular endosperm is characterized by the, absence of free nuclear stage.
The, conservation of germplasm involves the, preservation of the genetic diversity of a, particular plant or genetic stock. Translocations are diagnosed, genetically by semi-sterility and by the, apparent linkage of genes known to be on, separate chromosomes. Assertion: The external factors that affect, photosynthesis are number, size, age and, orientation of leaves, mesophyll cells and, chloroplasts and the amount of chlorophyll., Reason: Th e internal factors that affect, photosynthesis are availability of sunlight,, temperature, CO2 concentration and water., 24.
03 A French troubadour Which of the following examples represents secular music? 19 Mixed melodic directions with a transitional character The trumpet melody in the following excerpt can be best described as: Play 3. Cantus firmus The Baroque concerto is... A piece that contrasts a soloist or group of soloists against an orchestra In contrast to the Renaissance, where vocal and choral music took center stage, instrumental music established itself as the most significant genre of the Baroque period. Eugene Delacroix The dance-like characteristics of the following piece indicate that it was written by: Play 0 to 2. False Which genre is represented by this example? Texture in music refers to the feeling created by the combination of melody and harmony. The most salient compositional aspect of the following excerpt is: within. 19 Excerpt A Given the Hungarian folk music flavor of this example, which of the following is the most likely composer? Play 0 to 7:57 True Which of the following statements is correct? 01 Karlheinz Stockhausen Which of the following composers did NOT employ total serialism in his work? 37 True Concentration on vocal music during the Renaissance period meant that instrumental music continued to be used as mere accompaniment for voices. Melodic motion and melodic repetition are both effective ways of creating tension and relaxation. 03 Troubadour song The composer of this excerpt is... 58 to 6. Monophony Bach was known as a master of presenting a singular musical texture throughout his vocal music to help communicate the text. 54 not basso continuo terraced dynamics The following selection, sung by Historicus, comes from a well-known __________.
11 True This excerpt demonstrates the principle of repetition. 39 False Which of the following is an example of increasing tempo (accelerando), and the increasing excitement that goes with it? Which excerpt represents the Theme? False The following excerpt represents monophonic texture. Does the following excerpt move mainly by disjunct, conjunct, or repeated tones?
Technology has enabled art music composers to experiment with and change the way that they create music. False The following excerpt represents melody with harmonic accompaniment. False The following excerpt has smooth melodies that imitate one another on entrances. 35 oratorio Farinelli was a famous: castrato The composer of the following music example could likely be... 40 Homophonic texture Listen to the following example. Arnold Schoenberg Which one of the following composers' style is most closely associated with that of the commercial music world known as Tin Pan Alley? The direction of the following melody can be best described as: Play 0. 32 True Although the violin is mostly a single melody instrument, violinists can also play chords using an instrumental technique known as: play 1:17 to 8. The most salient compositional aspect of the following excerpt is good. :05 Double stops The following excerpt is consonant. Which of the following is not a composer from the Romantic period? True This composition is a clear example of: Play 0 to 17. 30 It moves in mostly step-wise fashion and has a small range.
According to the text, art of the Romantic period valued emotional restraint and clarity of form. 30 Hildegard von Bingen Which of the following is a salient characteristic of secular music from the Medieval period? The most salient compositional aspect of the following excerpt is: with respect. Then, circle the word or words the adjective, adjective phrase, or adjective clause modifies. 36 not example C One characteristic of this excerpt that suggests it might be from the Baroque Period is: Play 0 to 3. George Gershwin Which of the following is the composer for this excerpt? False Which of the following examples represents sacred music? 19 Imitation between voices A musical phrase does not necessarily need to have a sense of completion in and of itself.
None of these statements Texture in music refers to the ways in which monophony, polyphony, and homophony combine to create harmony. 29 Oratorio Which one of the following pairs of words or phrases represents the two main concepts behind Baroque music? 38 C. 52 Excerpt In broad terms, music and the other arts of the Romantic period... 43 True Which excerpt most likely represents theme and variations form? True According to the text, Beethoven strongly influenced the music of Haydn. True Which of the following terms does not refer to a basic musical texture?
06 Which form does it represent? False This piece of music is a good example of: Play 0 to 1:38 Polyphonic texture Musical texture refers to how melody and harmony relate to each other. This example is: Play 1. Carl Orff The following piece was written by a leading figure of the post-WWII German avant-garde. Ternary form Usually, folk tunes, songs, spirituals, and hymns are not good examples of strophic form. 06 It contrasts a group of instruments with a solo instrument.