2. T.O. Diener discovered a: Free infectious RNA
called viriodes
3. Mannitol is the stored food in Fucus
4. Equisetum is a vascular cryptogam
5. Phylogenetic system of classification is based on Evolutionary relationships
6. Aschelminthes
(round worms),annelid,arthropoda,mollusca and chordates are bilaterally symmetrical and
triploblastic.
7. Peripatus is a connecting link between Annelida and Arthropoda
8. ) Lampreys and hag
fishes comprises ‘jawless vertebrates.
9. If a live earthworm is prickled with a needle on its
outer surface without damaging its gut the fluid that comes out is coelomic fluid .
10. Plasmodesmata are connections
between adjacent cells
11. Stroma in the chloroplasts of higher plant contains light-independent reaction enzymes
12. Synapsis occurs between two homologous chromosomes during zygotene stage.
13. Middle lamella is composed mainly of Calcium pectate
14. Cytoskeleton is
made up of Proteinaceous filaments
15. The cell junctions called tight, adhering and gap
junctions are found in Epithelial tissue
16. The kind of tissue that forms the supportive structure
in our pinna (external ears) is also found in Tip of the nose is cartilage.
17. Ciliated epithelial
tissue present on the inner surface of bronchioles and fallopian tubes .
18. Genetic code is unambiguous,a codon in mRNA is read in a in contiguous
fashion. It is nearly universal. It is degenerate
19. Removal of introns and joining the exons in a define
order in a transcription unit is called Splicing
20.semiconservative replication of DNA was first demonstrate
in Escherichia coli by Messelson and Stahl and in
Vicia faba by Taylor.
21. Nirenberg and
Mathaei cracked the DNA and discovered unequivocally that a genetic code is
a “triplet.
22. Point mutation involves change in single base pair
23. In the case of peppered moth (Bistonbetularia) the
black-coloured form became dominant over the
light-colored form in England during industrial revolution. This is an
example of natural
selection whereby the darker forms were
selected.
24. Sickle cell anemia is
aused by a change in a single base pair of DNA.Gag coding or glutamicacid
changes to GUG coding or valine.
25. The most popularly known blood grouping is the ABO
grouping. It is named ABO and not ABC, because “O” in it refers to having no antigens A and B on RBCs.
26. Baldness is a
sex-influenced trait. Linkage is an exception to the principle of
independent assortment in heredity.Galactosemia
is an inborn error of metabolism.Small
population size results in random genetic drift in a population
27.Cotyledons and testa respectively are edible parts in ground nut and pomegranate
28. An example of a seed with endosperm, perisperm, and
caruncle is: Castor .
29. Guard cells help in transpiration. Guttation is when a plant
pushes water out through tips of the leaves of plants. These are
special pores called hydathodes.
30. Manganese is required in photolysis of water during photosynthesis
31. Oxygenic photosynthesis occurs in Oscillatoria.
32. Fruit developed
from hypanthodium inflorescence is called
Syconus
33. The annular and spirally thickened conducting elements
generally develop in the protoxylem when the root or stem is maturing.
34. Lemon is an
example of axile placentation .
35.In barley stem vascular bundles are closed and scattered.
36. Aerobic respiratory pathway is appropriately termed amphibolic
37. Palisade parenchyma is absent in leaves of sorghum .
38. Reduction in vascular tissue, mechanical tissue and
cuticle is characteristic of hydrophytes.
39. Anatomically fairly old dicotyledonous root is
distinguished from the dicotyledonous stem by
position of
protoxylem .
40. Cyclic photophosphorylation results in the formation of ATP.
41. In a standard ECG
the P-wave represents the electrical excitation (or depolarisation) of
the atria, which leads to the contraction of both the atria.
The QRS complex
represents the depolarisation of the ventricles, which initiates the
ventricular contraction.
The T-wave
represents the return of the ventricles from excited to normal state
(repolarisation) and the end of the T-wave marks the end of systole.
42. Uric acid is the chief nitrogenous component of the
excretory products ofinsects,rep[tiles and birds.
43. Fat and cellulose
in humans reaches the stomach totally undigested.
44. Iris –
Involuntary smooth muscle,Heart wall -
Involuntary cardiac muscle, Biceps of upper arm – Striatedmuscle fibres.
Abdominal wall – Striated muscle
45. Compared to blood our lymph has more WBCs and no RBCs
46. If the stretch
receptors of the urinary bladder wall are totally removed there
will be no micturition.
47. Hypothalamus
of human brain is concerned with the regulation of body temperature.
48. A young infant may be feeding entirely on mother’s milk
which is white in colour but the stools which the infant passes out is quite
yellowish. What is this yellow colour due to bile pigments passed through bile juice.
49. Globulins contained in human blood plasma are primarily
involved in defence mechanisms of body
50. Seminal plasma in humans is rich in Fructose, calcium and certain enzymes
51. Cytosine, uracil, thiamine – Pyrimidines. Malleus, incus,
stappes – Ear ossicles.Ilium, ischium,
pubis – Coxal bones of pelvic girdle.Actin, myosin, troponin and
tropomyosin. – Muscle proteins
52. About 30% of starch is hydrolyzed by salivary amylase in
our mouth. Oxyntic cells in our stomach secrete the Hcl.Fructose and amino acids are absorbed through intestinal mucosa with
the help of carrier ions like Na+.Chylomicrons are small lipoprotein
particles that are transported from intestine into lacteals.
53. Transpiration and root pressure cause water to rise in
plants by pulling and pushing it,
respectively
54. Elbow joint is an example of hinge joint,
55. Heterospory is
considered important in the development of seed habit.
56. NAA is a synthetic auxin .
57. Abscisic acid is
a derivative of carotenoids.
58. Vegetative propagation in mint occurs by sucker.
59.Pinus is monoecious.
60. Foetal ejection reflex in human female is induced by full developed foetus and placenta.
61. Menstruation :
Breakdown of endoometrium and ovum not fertilized.Ovulation : LH attain peak level .Proliferative phase :
Rapid regeneration of endoometrium and
maturation of Graafian follicle.Development
of corpus luteum-Secretory phase and increased
secretion of progesterone
62. Fertilization of
the ovum is the most likely root cause why menstruation is not taking place
in regularly cycling human female.
63. The correct sequence of spermatogenetic stages leading
to the formation of sperms in a mature human testis is: Spermatogonia – Spermatocyte –
Spermatid – Sperms
64.A change in the amount of yolk and its distribution in
the egg will affect the pattern of
cleavage.
65. When breast feeding is replaced by less nutritive food
low in proteins and calories; the infants below the age of one year are likely
to suffer from: Marasmus
66. Fishes occupy more than one trophic level in a pond
ecosystem.
68.Montreal protocol aims at reduction of ozone depleting substances
69. Chipko movement was launched for the protection of
forests. The Chipko movement, or Chipko Andolan,
was a forest conservation movement in India. It began in 1970s in
Uttarakhand, then a part of Uttar Pradesh(at the foothills of Himalayas) and
went on to become a rallying point for many future environmental movements
all over the world.
70. The correct sequence of plants in a hydrosere is Volvox → Hydrila → Pistia → Scirpus→ Lantana
→ Oak
71. Steps taken by Government of India to control air
pollution include:Use of non-polluting
Compressed Natural gas (CNG) only has fuel by all buses and trucks
72. Biochemical Oxygen Demand (BOD) in a river water increases when sewage gets mixed with river
water.
73. DDT residues are rapidly passed through food chain
causing bio magnification because DDT is liposoluble.
74. Global agreement in specific control strategies to
reduce the release of ozone depleting substances, was adopted by the Montreal protocol.
75. Somaclones are obtained by tissue culture
76. Root knot of vegetables – Meloidogynesp. Late blight of potato – Phytophthora infestans. Black rust to wheat –
pucciniagraminis .Loose smut of wheat - Ustilagonuda
77. Bacillus thuringiensis,Trichoderma harzianum and Nuclear
polyhedrosis virus (NPV) are used as biopepesticide.
78. Zea mays
species select for the production of bioethanol.Jatropha for biodiesel.
79. Frankia and rhizobium are symbiotic nitrogen fixes.
80. A health disorder that results from
the deficiency of thyroxine in adults and characterized by (i) a low metabolic
rate, (ii) increase in body weight and (iii) tendency to retain water in tissue
is Myxoedema
81. Malignant tumours
may exhibit metastasis.Benign tumours does not show the the property of metastasis
82. smallpox.the common cold , measles, mumps, rubella, chicken pox, shingles, hepatitis,herpes and cold sores,
polio, rabies ,Ebola and AIDS are viral diseases.
. 83. A person likely
to develop tetanus is immunized by administering Preformed antibodies
84. Use of anti-histamines and steroids give a quick relief
from allergy.
85. Alzhimer disease in humans is associated with the
deficiency of: Acetylchlorine
86. Agrobacterium
tumefaciens is commonly used in transfer of foreign DNA into crop
plants.
87. The bacterium Bacillus thuringiensis is widely used in
contemporary biology as insecticide.
88. Textile – amylase- Detergents – lipase-Fruit juice –
pectinase
89. Polyethylene glycol method is used for Gene transfer without a vector
90. Transgenic plants are the ones generated by introducing foreign DNA in to a cell and regenerating a
plant from that cell.
91. Bt toxin is a
inactive protoxin gets converted into active form in the insect gut.
92. The genetic defect- adenosine deaminase (ADA) deficiency
may be cured permanently by) Introducing
bone marrow cells producing ADA into cells at early embryonic stages .
93. There is no DNA in Mature
RBCs.
94. The letter T in T-lymphocyte refers to thymus.
95. Lion a resident
in Gir national park?
96. The eye of octopus and eye of cat show different
patterns of structure, yet they perform similar function. This is an example of
Analogous organs that have evolved due
to convergent evolution
97. Accumulation of
uric acid crystals in joints causes their inflammation called gout.
98. A phosphoglyceride is always made up of A saturated or unsaturated fatty acid
esterified to a glycerol molecule to which a phosphate group is also attached.
99. Perisperm differs from endosperm in being a diploid tissue
100. A sedentary sea anemone gets attached to the shell
lining of hermit crab. The association is:
commensalism
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