1.Our government has intentionally imposed strict conditions for M.T.P. in our country. Justify giving a reason.
2.State the fate of a pair of autosomes during gamete formation.
3.What role does an individual organism play as per Darwin’s theory of natural selection ?
4.Suggest a method to ensure an anamnestic response in humans.
5.What is biopiracy ?
6.Rearrange the human activities mentioned below as per the order in which they developed after the modern Homo sapiens came into existence during ice age :
(i) Human settlement
(ii) Prehistoric cave art
(iii) Agriculture
7.How are flavr savr tomatoes different from normal tomatoes?
8.Name the type of chemical bond formed between two nucleotide units of a DNA molecule?
9.Why do we call restriction enzymes as molecular scissors?
10.How a Water Hyacinth plant becomes so very harmful to the pond ecosystem?
11.Write the source of Taq polymerase enzyme.
12.Which hormones are responsible for parturition?
13.Draw labeled diagram of a blastocyst.
14.Mention the site of fertilization, describe how zygote develops and when it attaches to uterus?
15.Give one example of continuous variations and discontinuous variations.
16.Name the two primary lymphoid organs of human body?
17.When sexual reproduction adds variations then why should any angiosperm opt for vegetative propagation method?
18.Name the indicator species in polluted ganga water.
19.What are sacred groves?
20.Is it syngamy or triple fusion that leads to formation of zygote in an angiosperm? Mention their ploidy.
21.Write the scientific name of the plant used by Mendel for his experiments.
22.Write the full form of SCID.
23.Define BOD.
24.What is anthropogenic pollution?
25.How is apomixis useful to the field of horticulture?
26.What prevents polyspermy during fertilization in human reproductive system?
27.Why is a transplanted tissue rejected by the patient’s body?
28.Name that group of viruses which are employed as biological control agents.
29.What is cryopreservation?
30.State that law proposed by Mendel which is acceptable throughout without any exceptions.
31.Which mode of reproduction produces clones and why?
32.Sporopollenin is deposited on the wall of pollens then how does a pollen tube can emerge?
33.Write the mathematical expression of the Hardy Weinberg genetic equilibrium.
34.Which dye is used to stain gel so as to make DNA visible under ultra violet light?
35.During microsporogenesis, meiosis occurs in:
a. Endothecium
b. Microspore mother cells
c. Microspore tetrads
d. Pollen grains.
36.Which one of the following is not a male accessory gland?
a. Seminal vesicle
b. Ampulla
c. Prostate
d. Bulbourethral gland
37.Which of the following statements is correct?
a. Surgical methods of contraception does not prevent gamete formation
b. In E. T techniques, embryos are always transferred into the uterus
c. Oral pills are very popular contraceptives among the rural women
d. All STDs are completely curable
38.The synthesis of DNA is discontinuous on one strand of the replication fork because:
a. DNA molecule being synthesised is very long
b. DNA-dependent DNA polymerase catalyse polymerisation only in one direction (5' -> 3')
c. It is more efficient process
d. It help to use DNA ligase
39.To analyse the genotype of an organism, it is made to:
a. Self cross
b. Cross with recessive parent
c. Cross with dominant parent
d. Cross with another species
40.The conditions of the earth atmosphere conducive for the origin of life were:
a. Presence of high temperature, CH4, NH3, and O3
b. High temperature, CH4, NH3, volcanic eruption
c. High temperature, volcanic eruption, O2, NH3
d. Volcanic eruption, CH3, NH3 and O2
41.Virus-free plants can be raised in vitro from
a. Any plant part
b. Meristems of infected plants
c. Stem of infected plants
d. Leaves of infected plants
42.If a radiolabel is used to tag a DNA molecule, the technique used to localise would be
a. X-ray crystallography
b. Autoradiography
c. Fluorescence microscopy
d. Electron microscopy
43.An inverted Pyramid of biomass is represented by:
a. Aquatic ecosystem
b. Ecosystem of a big tree
c. Grassland ecosystem
d. Tropical fresh ecosystem
44.Some of the problems that have come in the wake of green revolution are:
a. Water logging and permafrost
b. Soil erosion and desertification
c. Water logging and soil salinity
d. Snow blindness and water logging
45.A tissue culture experiment has been performed with a plant tissue infected with TMV. Meristematic tissue produces healthy plant. Reason out the possibility of obtaining such result.
46.State a method of cellular defence which works in all eukaryotic organisms.
47.In case of an infertile couple, the male partner can inseminate normally but the mobility of sperms is below 40 percent. Judge, which kind of ART is suited in this situation to form an embryo in the laboratory, without involving a donor?
48.Calculate the length of the DNA of bacteriophage lambda that has 48502 base pairs.
49.If two genes are located far apart from each other on a chromosome, how the frequency of recombination will get affected?
50.A cross was carried out between two pea plants showing the contrasting traits of height of the plant. The result of the cross showed 50% of parental characters.Name the type of cross.
51.Write the two components of the first artificial recombinant DNA molecule constructed by Cohen and Boyer.
52.Name the enzyme secreted by the stomach of infants. What is the role of same enzyme in digestion?
53.What is the 1st stage of mosses which develops directly from spores? Give one characteristic of the same stage.
54.What is kinetin chemically?
55.Give two functions of lymph.
56.Define root pressure.
57.How do fats enter the respiratory cycle?
58.What is a metaphasic plate?
59.What is meant by total lung capacity?
60.Name two animals that exhibit Oestrus cycle.
61.What is point mutation ? Give one example.
62.Mention one difference to distinguish an exon from an intron.
63.Suggest a molecular diagnostic procedure that detects HIV in a suspected 1 AIDS patient.
64.What does nature’s carrying capacity for a species indicate ?
65.What would happen if corpus luteum is not degenerated
(a) Progesterone will not be secreted
(b) Endometrium will disintegrate
(c) Proliferation of endometrium will take place
(d) Ovulation will take place
66.Klinefelten syndrome has the genetic make up
(a) 44 autosomes + xxy
(b) 44 autosomes + xo
(c) 45 autosomes + xx
(d) 45 autosomes + xy
67."Cleistogamous flowers are invariably autogamous because"
(a) These flowers do not open at all.
(b) There is no chance of cross – pollen landing on the stigma.
(c) These flowers have exposed anthers and stigma.
(d) These flowers are wind pollinated.
68.Which of the following statements is correct
(a) Surgical methods of contraception does not prevent gamete formation
(b) In E.T techniques, embryos are always transferred into the uterus
(c) Oral pills are very popular contraceptives among the rural women
(d) All STDs are not completely curable.
69.Non coding sequences present within a gene is called:
(a) Exon
(b) Operon
(c) Promoter
(d) Intron
70.Which of the following DNA sequences would a Restriction enzyme recognize and cut?
(a) ATGCAC TACGTG
(b) GATATC CTATAG
(c) TAGATA ATCTAT
(d) AATATA TTATAT
71.The conditions of the earth atmosphere conducive for the origin of life were:
(a) Presence of high temperature, CH4, NH3, and O3
(b) High temperature, CH4, NH3, volcanic eruption
(c) High temperature, volcanic eruption, O2, NH3
(d) Volcanic eruption, CH3, NH3 and O2
72.To analyse the genotype of an organism, it is made to
(a) Self cross
(b) Cross with recessive parent
(c) Cross with dominant parent
(d) Cross with another species
73.An inverted Pyramid of biomass is represented by
(a) Aquatic ecosystem
(b) ecosystem of a big tree
(c) grassland ecosystem
(d) tropical fresh ecosystem.
74.Gene therapy can be used to correct one of the following
(a) Defective ADA
(b) Lack of B-Lymphocytes
(c) Defective Immunoglobuline
(d) Lach of T-Lejmphocytes
75.Coconut palm is monocious while date palm is dioecious. Why are they called so?
76.The meiocyte of an onion plant contains 32 chromosomes.Workout the number of chromosomes found in its endosperm.
77.The gene I that controls the ABO blood grouping in human beings has three alleles IA, IB and I.
(a)How many different genotypes are likely to be present in the human population?
(b) Also, how many phenotypes are possibly present?
78.Pick out the ancestral line of Cycads from the list given below -
Ferns, herbaceouslycopods,seed ferns, and horsetails
79.Name the source of smack. Mention one way in which it affectsthe human body.
80.How is alien DNA introduced into in plant cell?
81.Mr. Galgotia eats curd / yoghurt. In this case, which trophic level will he occupy?
82.How is population density of tiger measured?
83.Identify the reason for selection of DNA polymerase from Thermus aquaticus for Polymerase Chain Reaction.
84.Govt. of India has raised the marriageable age of female to 18 yrs and of males to 21 yrs.Suggest any two more measures adopted by Government for the purpose.
85.Thymus of a new born child was degenerating right from birth due to a genetic disorder.Predict its two impacts on the health of the child.
86.Give an example of a chromosomal disorder caused due to non-disjunction of autosomes.
87.Which group of organisms, regulators or conformers, can show maximum functional efficiency regardless of the existing weather conditions? Why?
88.Name a deadly disease that is completely eradicated from the world. How was it made possible?
89.How the RNA molecules made from above DNA strand help in silencing of the specific RNA molecules?
90.Name the type of pollination that is both genetically and functionally crossing. Which group of flowers will never undergo this type of pollination?
91.In which of the following species- crow, parrots, and tortoise- does speciation occur at the fastest rate? Why?
92.Name the embryonic stage that gets implanted in the uterine wall of a human female.
93.Mention the enzyme involved in the continuous replication of DNA strand and the polarity of the template strand.
94.Write the scientific name of the microbe used for fermenting malted cereals and fruit juices
95.How can the bacterial DNA be released from the bacterial cell for biotechnology experiments?
96.In which technique do we use Taq polymerase enzyme.
97.Name the pests controlled by the proteins encoded by the cry genes
98.Which biome region in the world is considered as the "Lungs of the planet".
99.What is EI Nino effect?
100.Why is banana considered a good example of parthenocarpy?