Post on 18-Apr-2022
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
Target -2018 MHT - CET 2018 Biology / Code-44
Solutions
Date: 10 May 2018
1.
Di�iculty : Easy
Topics :
REPRODUCTION IN PLANTS,
Cambium is essential for gra�ing in plants because cambia which consists of meristematic cells of stock and scion fusetogether.
Rao IIT Academy Website : www.raoiit.com1
2.
Di�iculty : Di�icult
Topics :
Biology,
Topic : Biochemistry of a cell
Hyaluronic acid is a hetropolysaccharide. It is made up of glucuronic acid and N-acetyl-D-glucosamine disaccharide units.
3. Di�iculty : Di�icult
Topics :
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION ,
'Pusa Sadabahar' is resistance to disease leaf curl and chilli mosaic virus of chilli. Himgiri of wheat is resistance to leaf andstripe rust.
4. Di�iculty : Easy
Topics :
Plant-Water Relations,MINERAL NUTRITION ,
The adsorption of water by hydrophilic compounds like cellulose and pectin in root hair cell wall is called Imbibition.
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
7.
Di�iculty : Medium
Topics :
RESPIRATION ,
Oxidative phosphorylation in eukaryotes occurs during respiration (Glycolysis). In oxidative pay o� phase of glycolysis in whichPGAL undergoes oxidation and phosphorylation.
8.
Di�iculty : Di�icult
Topics :
Biology,
Topic : Genetic basis of inheritance
Snapdragon is an example of incomplete dominance.
9.
Di�iculty : Easy
Topics :
Biology,
Topic : Gene : It's nature and expression
histone is present in the linker region. In the nucleosome, two molecules of each of and arepresent to form octamer.
10.
Di�iculty : Medium
Topics :
REPRODUCTION IN PLANTS,
GTB - Std.12th - Page no. 100
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5.
Di�iculty : Di�icult
Topics :
RESPIRATION ,
During Kreb's cycle, oxalosuccinate is converted into -ketoglutarate by oxidative decarboxylation.
6.
Di�iculty : Easy
Topics :
REPRODUCTION IN PLANTS,
Double fertilization in angiosperms was first discovered by S.G. Nawaschin in Lillium plants.
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
12. Di�iculty : Di�icult
Topics :
REPRODUCTION IN PLANTS,
In angiosperms, secondary nucleus and egg cell is formed from haploid nucleus of functional megaspore which undergoesthree successive free-nuclear mitotic division out of which one nucleus from either of the pole come to the center and thenfunctions as polar nuclei. So, secondary nucleus is a sister nucleus of the egg.
13. Di�iculty : Di�icult
Topics :
Biology,
In Mirabilis jalapa, incomplete dominance is seen. So all hybrid obtained will be 100% pink.
14. Di�iculty : Easy
Topics :
BIOTECHNOLOGY AND ITS APPLICATIONS ,
DNA technology restriction endonuclease enzyme is used for cleaving DNA molecule.
15. Di�iculty : Easy
Topics :
Organism and Its Environment,
The Chipka movement started in the early 1970s in the Garhwal of Uttarakhand with growing awareness towards rapiddeforestation.
16. Di�iculty : Medium
Topics :
PLANT GROWTH AND DEVELOPMENT ,
GTB - Std.11th - Page no. 92, 93, 94
Cytokinins delays the onset of senescence by application of cytokinins.
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11.
Di�iculty : Di�icult
Topics :
BIOTECHNOLOGY AND ITS APPLICATIONS ,
GTB - Std.12th - Page no. 41
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
17. Di�iculty : Easy
Topics :
Biology,
Topic : Genetic basis of inheritance
In a person su�ereing from sickle cell anaemia the R.B.C's become half moon shaped.
18. Di�iculty : Easy
Topics :
RESPIRATION ,
Respiration is very important process for survival of the living organisms as it oxidizes respiratory subtrate and energy isreleased in the form of ATP which is required for all metabolic activities.
19. Di�iculty : Medium
Topics :
Biology,
Topic : Gene : It's nature and expression
In eukaryotes, initial codon on m-RNA is AUG. During translation, t-RNA, anticodons are exactly complementary to m-RNA.Hence anticodon will be UAC.
20. Di�iculty : Easy
Topics :
BIOTECHNOLOGY AND ITS APPLICATIONS ,
Biopatent is granted for biological entities by government authority of a country.
21. Di�iculty : Medium
Topics :
REPRODUCTION IN PLANTS,
The exine of pollen grain is made up of sporopollenin.
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RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
22. Di�iculty : Medium
Topics :
Plant-Water Relations,MINERAL NUTRITION ,
Continuous upward flow of water stream in tall tree is maintained due to cohesive force between molecules andtranspiration pull.
23. Di�iculty : Medium
Topics :
BIOTECHNOLOGY AND ITS APPLICATIONS ,
GTB - Std.12th - Page no. 37 & 38
24. Di�iculty : Medium
Topics :
Photosynthesis,
Algae used for the discovery of path of carbon in dark reaction were chlorella and scenedesmus.
25. Di�iculty : Medium
Topics :
Diversity in the living organism,
Desmid, Dinoflagellate and Diatom are the plant - like protist. Slime mould is fungi - like protist.
26. Di�iculty : Easy
Topics :
RESPIRATION ,
In case of anaerobic respiration, the RQ is always infinity.
27. Di�iculty : Easy
Topics :
REPRODUCTION IN PLANTS,
GTB std. XII Pg. No. 98.
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RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
28. Di�iculty : Di�icult
Topics :
MICROBES IN HUMAN WELFARE ,
Monomers are converted into organic acids by acidogenic bacteria.
29. Di�iculty : Easy
Topics :
Photosynthesis,
A part of phgotosynthetically fixed goes back to the atmosphere due to photoresrpiration.
30. Di�iculty : Easy
Topics :
Biology,
Topic : Gene: It's nature and inheritance
'i' gene (Regulatory gene) transcribes a repressor mRNA when glucose is the normal energy source in bacterial cell.
31. Di�iculty : Easy
Topics :
REPRODUCTION IN PLANTS,
Double fertilization is the characteristic feature of angiosperms.
32. Di�iculty : Di�icult
Topics :
MICROBES IN HUMAN WELFARE ,
The BOD of e�luent decreases a�er secondary treatment as bacteria decompose most of the organic matter in the e�luents.
33. Di�iculty : Easy
Topics :
PLANT GROWTH AND DEVELOPMENT ,
Hypogeal germination is a type of seed germination in which epicotyl region of embryo elongates rapidly and brings theplumule above the soil surface.
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RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
34. Di�iculty : Easy
Topics :
Biology,
Topic : Genetic Basis of Inheritance
Di�erent genotypes obtained
The genotypic ratio is
35. Di�iculty : Easy
Topics :
Organism and Its Environment,
Global warming causes melting of glacier, change in rainfall pattern and increase in sea level.
36. Di�iculty : Di�icult
Topics :
Photosynthesis,
In cyclic photophosphorylation, formation of ATP occurs between
Cytochrome Cytochrome f
Ferredoxin Cytochrome
37. Di�iculty : Medium
Topics :
REPRODUCTION IN PLANTS,
A�er pollination, 2 celled pollen grain is deposited on stigma surface and it undergoes germination. When generative cellundergoes mitosis only once for formation of 2 male gametes.
38. Di�iculty : Medium
Topics :
Diversity in the living organism,
Angiospermae is not a category. Angiospermae is a division of Angiosperms.
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RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
39.Di�iculty : Easy
Topics :
Biology,
Topic : Genetic basis of Inheritance
Mendel obtained pure lines by selfing yellow round seeds as female parent and green wrinkled as male parent for 3generations.
40. Di�iculty : Easy
Topics :
BIOTECHNOLOGY AND ITS APPLICATIONS ,
The enzyme Taq polymerase used in PCR technique is obtained from Thermus acquaticus.
41. Di�iculty : Easy
Topics :
REPRODUCTION IN PLANTS,
Vegetative propagation results on production of gentically similar plants as this is a type of sexual reproduction.
42. Di�iculty : Easy
Topics :
Diversity in the living organism,
Virus is NOT active outside the host body.
43. Di�iculty : Easy
Topics :
Photosynthesis,
NADP is the hydrogen acceptor during light reaction.
Rao IIT Academy Website : www.raoiit.com8
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
44. Di�iculty : Medium
Topics :
Biology,
Topic : Gene it's nature and expression
This is central Dogma for protein synthesis.
45. Di�iculty : Easy
Topics :
RESPIRATION ,
38 ATP molecules are produced during breakdown of glucose molecule.
46.Di�iculty : Easy
Topics :
REPRODUCTION IN PLANTS,
A stem tuber has many notches on its surface called 'eyes'. Each 'eye' is actually at a node and constant of one or more smallaxillary buds and reduced scale leaves.
47. Di�iculty : Di�icult
Topics :
Organism and Its Environment,
Ozone layer in stratosphere is provides protection from UV rays while ozone layer in trophosphere is also known as bad ozonebecause it is harmful to breathe and it damages crops trees and other vegetation. And it also harmful for animals.
48. Di�iculty : Easy
Topics :
Biology,
Topic : Biochemistry of a cell
Steroids are characterised by carbon atom arranged in four inter-locking rings.
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RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
49. Di�iculty : Easy
Topics :
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION ,
Chl-a and Chl-b shown maximum absorption in Blue, violet and red regions of visible light.
50. Di�iculty : Medium
Topics :
Organism and Its Environment,
Explant used for the production of disease free plants is apical meristem.
51. Di�iculty : Di�icult
Topics :
Zoology,Organism and Its Environment,
Sacculina and crab show parasitism. It is an intra specific interaction in which one of the species (parasite) is benefited whilethe other one (host) is harmed.
52. Di�iculty : Di�icult
Topics :
Zoology,CIRCULATION,
Coronary sinus - (iv)
Base of systemic aorta - (iii)
Le� atrioventricular valve - (i)
Opening of inferior vena cava - (ii)
53. Di�iculty : Easy
Topics :
Zoology,Organism and Its Environment,
Density increases when birth rate (Natality) and Immigration (inflow of population) increases.
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RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
54. Di�iculty : Di�icult
Topics :
Zoology,
Topic - Chromosomal Basis of Inheritance
Linkage groups in a species correspond to its haploid number. In honeybees, total chromosomes
Linkage groups
Haploid no. of chromosome in honeybee
55. Di�iculty : Medium
Topics :
Zoology,Excretion and osmoregulation,
Erythropoietin is produced in the kidneys and plays a key role in production of RBC's.
56. Di�iculty : Di�icult
Topics :
Botany,RESPIRATION ,
Co-enzymes of Electron Transport Chain in mitochondria are cytochromes, dehydrogenases, flavoproteins
57. Di�iculty : Medium
Topics :
Zoology,HUMAN REPRODUCTION,
In second trimester, the hormone levels stabilizes as HCG declines. Corpus luteum deteriorates and placenta completely takesover the production of progesterone which maintains the pregnancy.
Rao IIT Academy Website : www.raoiit.com11
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
58. Di�iculty : Easy
Topics :
Zoology,Origin of Life,
Its fossil was invented by J.K. Fuhlort on Neanderthal valley, Germany.
C.C = 1450 mL
These were heavily built & short.
59. Di�iculty : Easy
Topics :
Zoology,CONTROL AND COORDINATION,
Ventrolateral walls of cerebrum is corpora striata.
60. Di�iculty : Easy
Topics :
Zoology,
Topic - Human respiration
Carbon monoxide combines with haemoglobin and forms Carboxyhaemoglobin.
Hb. has more a�inity for CO than for oxygen.
61. Di�iculty : Medium
Topics :
Zoology,Health and Disease,
X is antigen binding site. Antigen combines with the antibody at this site in a lock and key manner.
Rao IIT Academy Website : www.raoiit.com12
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
62. Di�iculty : Di�icult
Topics :
Zoology,HUMAN REPRODUCTION,
63. Di�iculty : Medium
Topics :
Zoology,
Topic - Genetic Engineering
Dr. Lalji Singh obtained radioactive DNA probe from Y chromosome of female banded krait.
64. Di�iculty : Medium
Topics :
Zoology,Organism and Its Environment,
Zoological parks are ex-situ conservation of biodiversity.
65. Di�iculty : Medium
Topics :
Zoology,Animal Tissue,
Unicellular glands are single celled secretory cells. Goblet & mucous cells are major example of unicellular glands in humans.
Rao IIT Academy Website : www.raoiit.com13
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
66.Di�iculty : Easy
Topics :
Zoology,HUMAN REPRODUCTION,
Ovary shows cyclic changes during menstrual cycle. Cortical region shows di�erent stages of development of ovarian folliclesor Graafian follicles. Each follicle has many layers of follicle cells. The follicle cells of a maturing follicle secrete estrogen.
67. Di�iculty : Easy
Topics :
Zoology,
Topic - Chromosoma Basis of inheritance
-Human females are XX and hence they show double dose of X chromosome.
-Sex linked traits appear more frequently in males and females are carriers.
-Colour blindness is due to improper formation of cones (colour sensitive cells).
-Drone bees are infertile males.
68. Di�iculty : Di�icult
Topics :
Zoology,CIRCULATION,
Myocardial infarction is commonly known as heart attack. It occurs when blood flow decreases or stops to a part of the heartcausing damage to heart muscle.
69. Di�iculty : Medium
Topics :
Zoology,Origin of Life,
Molecular evolution and origin of Earth was observed in Archeozoic Era.
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RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
70. Di�iculty : Medium
Topics :
Zoology,CONTROL AND COORDINATION,
X is adrenal Medulla. It secretes two hormones known as adrenaline (epinephrine) and noradrenaline (nor epinephrine). Theseare together known as Catecholamines.
71.Di�iculty : Medium
Topics :
Zoology,
Topic - Organisation of Cells
Chloroplast is plastid for Photosynthesis.
Leucoplast is plastid for storage of starch, lipids & proteins.
72. Di�iculty : Easy
Topics :
Zoology,
Topic - Chromosomal basis of inheritance
Klinefelter's syndrome has 44A + XXY one extra X-chromosome is present.
73. Di�iculty : Easy
Topics :
Zoology,
Topic- Organisation of cell
Microvilli
Golgi apparatus
74. Di�iculty : Di�icult
Topics :
Zoology,CONTROL AND COORDINATION,
Parasympathetic ganglia are located on the side of visceral organs like heart, kidney etc.
Rao IIT Academy Website : www.raoiit.com15
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
75. Di�iculty : Easy
Topics :
Zoology,
Topic- Human Nutrition
Succus entericus contains Sucrase, Maltase, Dipeptidase
76. Di�iculty : Easy
Topics :
Zoology,
Topic - Human respiration
Adam's apple is Larynx (Sound Box)
More prominent in Males
77. Di�iculty : Easy
Topics :
Zoology,CIRCULATION,
Tunica interna is the innermost layer
78. Di�iculty : Easy
Topics :
Zoology,HUMAN REPRODUCTION,
FSH is Folicle Stimulating Hormone brings about maturation of graafian follicle.
79. Di�iculty : Medium
Topics :
Zoology,Health and Disease,
A child a�er attack of measles develops Natural Acquired active Immunity.
Natural Acquired active Immunity is the immunity acquired due to infection
Rao IIT Academy Website : www.raoiit.com16
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
80. Di�iculty : Easy
Topics :
Zoology,Origin of Life,
Darwin observed a variety of Finches in Galapagos Islands
81. Di�iculty : Medium
Topics :
Zoology,
Topic - Human Nutrition
Marasmus is prolonged protein energy malnutrition. Atrophy of digestive glands & intestinal mucosa is seen due to whichabsorption of food stops. There is no oedema seen in Marasmus, oedema is a characteristic of kwashiorkor
82. Di�iculty : Medium
Topics :
Zoology,Origin of Life,
Dryopitheus is not a connecting link
Archeopteryx is connecting link between birds & Reptils
Ichthyostegia is connecting link between Fish & Amphibian
Seymouria is connecting link between Amphobians & Reptils
83. Di�iculty : Di�icult
Topics :
Zoology,HUMAN REPRODUCTION,
Oogonia arise form the endoderm of the yolk sac and migrate to ovaries during embryonic development
84. Di�iculty : Easy
Topics :
Zoology,
Topic - Human Nutrition
Lacteals absorb Fatty acids and glycerol
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RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
85. Di�iculty : Easy
Topics :
Biology,
Blood is filtered from Glomerulus. In the given diagram 'N' is the Glomerulus. L-A�erent arteriole, M-e�erent arteriole. O-Neckof Bowman's capsule.
86. Di�iculty : Easy
Topics :
Zoology,Excretion and osmoregulation,
There are several types of kidney stones based on type of crystals of which they consist. The majority are calcium oxaletestones, followed by calcium phsophate stones
87. Di�iculty : Easy
Topics :
Zoology,HUMAN REPRODUCTION,
In each testis, there are 200 - 300 lobules. In each lobule there are 1-4 convoluted loops called seminiferous tubules.
88. Di�iculty : Easy
Topics :
Zoology,
Topic - Genetic ENgineering & Genomics
DNA fingerprinting is not based on fingerprints of individual
89. Di�iculty : Medium
Topics :
Zoology,
Topic - Animal Husbandry
Lac is used in the manufacture of Toys, Polish, Ink etc.
Rao IIT Academy Website : www.raoiit.com18
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
90. Di�iculty : Easy
Topics :
Zoology,Excretion and osmoregulation,
Spiders, Scorpions, Penguins excrete mostly guanine and hence are called guanotelic
91. Di�iculty : Easy
Topics :
Zoology,Animal Tissue,
Epithelial tissue lacks blood vessels and hence is an avascular tissue
92. Di�iculty : Medium
Topics :
Zoology,
Topic - Genetic Engineering & Genomics
Transgenic animals would be useful as bioreactors to produce important proteins such as - antitrypsin. This is used totreat emphysema
93. Di�iculty : Medium
Topics :
Zoology,HUMAN REPRODUCTION,
Level of progesterone reaches its maximum in the Secretory phase
94. Di�iculty : Medium
Topics :
Zoology,
Topic - Genetic Engineering & Genomics
Mice are most succesfully produced transgenic animals due to short generation time
Rao IIT Academy Website : www.raoiit.com19
RAO IIT ACADEMY / MHT - CET 2018 / Biology / Code-44 / Solutions
95.
Di�iculty : Easy
Topics :
Zoology,Organism and Its Environment,
Pneumatic bones and le� sided ovary is characteristic feature of Aerial adaptation
96.
Di�iculty : Easy
Topics :
Zoology,Kingdom Animalia,
Regeneration as a type of Asexual Reproduction observed in Planaria
97. Di�iculty : Easy
Topics :
Zoology,CONTROL AND COORDINATION,
Arbor vitae is seen in grey cortex of cerebellum
98.
Di�iculty : Easy
Topics :
Zoology,Animal Tissue,
Two adjacent Haversian systems are connected by Volkmann's canal
99.
Di�iculty : Di�icult
Topics :
Zoology,
Topic - Animal Husbandry
Cirrhina is fresh water fish
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100. Di�iculty : Easy
Topics :
Zoology,Health and Disease,
Heroin is extracted from Papaver Somniferum