1.
What is not involved
in ecdysis?
a) nervous
system b) ecdysone c) enzymes
d) none of these
2.
Nastic movements are
due to balance or ratio between:
a) Abscic
acid-Gibberellin b)
Abscic acid-cytokinins
c) Abscic acid-Auxins d) none of these
3.
What is not true for
sclerenchyma?
a)
lignin b) branched pits c) angular thickening d) simple pits
4.
The elimination of
nitrogenous wastes from body is called:
a) defecation b) excretion c) secretion d) all of these
5.
Perspiration is meant
for:
a) excretion b) osmoregulation c)
thermoregulation d) none
6.
What is not related
with Auxins: (28,29)
a) gravitropism b) epinasty c) hyponasty d) all of
these
7.
What is not true about
muscle fibers? (39)
a) 10-100 μm b) stored glycogen c) stored myoglobin d) none
8.
On a cool day the
temperature of legs and arms is …….. than trunk:
a) several
degrees lower b) higher c) same d) much higher
9.
T-system encircles the
myofibril at the level of:
a) Z-line b) A and I- junction c) all of these d) none of these
10.
Secondary growth takes
place due to………cambium: (25,106)
a) vascular b) intercalary c)
cork d)
all of these
11.
Which of the
followings is not an endothermic animal:
a) bird b)
amphibian c) flying
insect d) mammal
12.
Which of the
followings is a paired bone?
a) mandible b) vomer c) palatine d) none of these
13.
Collagen is not found
in:
a) bones b) cartilage c) tendons d) none of
these
14.
Panting is to dogs as
urination (and salivation) is to:
a) human b) birds c)
bats d) frogs
15.
Epidermis, cortex and
pith take in water by: (23)
a) active transport b) osmosis c) endocytosis d) all of these
16.
Which of the
followings is not involved in support in animals:
a) Muscle b)
cartilage c) bones d) none
17.
Which of the followings is not present in Axon:
a) Mitochondria b) microtubules c) neurofibril d)
none of these
18.
Uexkull and Lorenz; (1935) were:
a) Neurologists b) physiologists c) ethologists d)
none
19.
The neuron net of hydra lacks:
a) Neurons b) dendrites c) Ganglia d)
direction of impulse flow
20.
A bundle of Axons and dendrites bounded by
connective tissue is called:
a) Neuron b)
nerve
c) Grey matter d)
white matter
21.
What is the number of cranial and spinal
nerves:
a) 12 and 13 b) 24
and 62
c) 12 and 31 d) none
22.
The one which is not related to others:
a) Cretinism b)
myxoedema c) Grave’s disease d) gigantism
23.
Learning
behaviour depends on:
a) Hereditary material b)
environment c)
Both
d) none
24.
Chemical
messengers are produced by:
a) Endocrine cells b) neurons c) All of
these d) none
25.
Which of the followings is the constituent of
birth control pills:
a)
Progesterone b) aldosterone c) Estrogens d) none
26.
Which of the followings does not inhibit TSH?
a) High temperature b) high thyroxine level
c) Low
glucose level d) none of these
27.
Which of the followings converts glucose into
lipids and proteins:
a) Cortisol b) insulin c) Aldosterone d)
glucagon
28.
Transient alterations in brain due to excessive
rapid electric discharges in the grey matter are found in:
a)
Epilepsy b) Parkinsonism c)
Alzheimer’s disease d) none
29.
Autonomic nervous systems use two neurons and:
a) One
ganglion
b) two ganglia c) Four
ganglia d) none
30.
Cavities in brain are called:
a) Corpus callosum b) ventricles c)
neurocoel d) white matter
31.
Nicotine affects
a) Post-synaptic
membranes in PNS b) Acetylcholine
receptors
c)
Digestive tract mobility d) all of these
32.
Mechanoreceptors are not present in:
a) Stomach b) ear
c) Carotid arteries d) none
33.
Modification
through experience is called:
a) Habituation b) learning
behaviour
c) Instinct d) none
34.
An individual produced by parthenogenesis is:
a) Male b)
female c) male or female d) hermaphrodite
35.
The most effective temperature for vernalisation
is:
a) 4˚C b)
4˚F c) 14˚C d) 14˚F
36.
Which of the followings is not the function of
Red light?
a) Greening b) photomorphogenesis
c) Germination of fern spore d) unhooking of plumule
in monocots
37.
Climacteric is associated with production of:
a) Ethene b) Auxins c) cytokinin d) all of these
38.
Sertoli cells are present:
a) among semeniferous tubules b)
in semeniferous tubules
c) in uterus d) in ovary
39.
The cells meant for nourishment of sperm are:
a)
Interstitial cells b)
sertoli cells c) germ cells d) none
40.
The desire of a female for mating is called:
a) Estrous b) heat period c) heat d)
all of these
41.
Primary oocyte is formed by:
a) mitosis b) meiosis c) both d) none of these
42.
Which of the followings retards cell elongation
in plants:
a) red light b) blue light c) ultraviolet rays
d) all of these
43.
Plant cells become pitted during:
a) cell division b) maturation c) differentiation d) all of these
44.
The sprouting of potato can be prevented by
application of hormones for:
a) 1 to 3
year b) 2 to 4 year c) 3 to 5 year d)
none of these
45.
In chick embryo the folding of neural plate is
clearly visible at……… stage:
a) 18 hours b) 25 hours c) 24 hours d) 22
hours
46.
The study of aging and increase in health is
called:
a)
Gerontology b)
Teratology c) Theology d) none of these
47.
Which of the followings is not formed from
intercalary meristems:
a) leaves b) flowers c) braches of roots
d) none of these
48.
Root primordium develops from root cambium, also
called:
a)
pericycle b) pith c) cortex d)
both “a” & “c”
49.
Cork cambium gives rise to:
a) bark of shoot b) bark of root c) both “a” & “b” d) none of these
50.
Which of the followings inhibits the internodes
growth i.e. etiolation:
a) red
light b) blue
light c)
ultraviolet rays d) all of these
51.
Chromosomes were first observed by a German
embryologist ……………. in 1882.
a) P. Levene b) A. Flemming
c) Levine d) W. Flemming
52.
……………….extracted a white substance from the
nuclei of human cells and fish sperms and called it “nuclein”.
a) Archibald b) Meischer c) W Bateson d) Correns
53.
Which one of the followings is not a pyrimidine:
a) Thymine b) Cytosine c) Adenine d) Uracil
54.
In a nucleotide, a nitrogenous base is attached
to carbon No:
a) 5 b) 4
c) 3 d) 1
55.
Beadle and Tatum concluded that genes produce
their affects by specifying the structure of:
a) Proteins b)
RNA c) DNA d) All of these
56.
By analyzing the structure of normal and sickle
cell hemoglobin, Vernon Ingrum showed that sickle cell Anemia is caused by a
change from glutamic acid to ……………..
a) Glycine b) Valine c) Alanine d) Arginine
57.
The transfer of information from RNA to direct
the synthesis of polypeptide by ribosome is called:
a) Transduction
b) Transcription c)
Replication d)
Translation
58.
A set of three nucleotides on mRNA specifying a
particular amino acid is called:
a) Code b)
genetic code c) codon
d) Anticodon
59.
As a result of meiosis, the number cells formed
is:
a) four b)
three c) two d) None
of these
60.
Meiosis takes place to form:
a) gametes b)
sperms c) ova d) All of these
61.
21-trisomy is also called:
a) Mongolism b)
Petau Syndrome
c) Edward
syndrome d) All of
these
62.
18-trisomy is also called:
a) Edward syndrome b)
Turner Syndrome
c) Meta female d) None of these
63.
Brothers having same parents are not similar due
to:
a) Mitosis b) Synapsis c) Apoptosis d) Crossing over
64.
Obesity, tallness, small testes and enlarged
breast are found in individuals with ……………:
a) Klinefelter Syndrome b) Down’s syndrome
c) Turner
Syndrome d) None of
these
65.
The division of nucleus is called:
a) cytokinesis b) karyokinesis c) phregmoplast d) None
66.
Number of chromosomes in human egg is:
a) 44+XY b) 44+X
c) 23
d) None of these
67.
The number of chromosomes in moquito and corn
is:
a) 6 & 20 b) 6 pair & 20 pair c) 26 & 80 d) 13 pair & 20
68.
The form
of appearance of a trait is called:
a) genotype b) phenotype c) pleiotrpy
d) sex limited character
69.
The
partner of a gene pair is called:
a) Allele
b) heterozygote c) jumping gene d) none of these
70.
When
both the alleles of a gene pair in an organism are same, the organism is
called:
a)
homozygous b) hemizygous c) both “a” & “b” d) none of these
71.
A &
B antigen can also be present in saliva and other body fluids due to dominant
gene “Se” on chromosome:
a) 19 b) 9 c) both “a” & “b” d)
11
72.
Who for
the first time observed the white eye mutant in Drosophila?
a) Morgan b) Bridges c) Levine d)
L. Pauling
73.
Individuals
of blood group ……. are called universal donors:
a) A b) AB c) B d) O
74.
Bilirubin
damages ……… cells and turns skin and white of eyes, yellow. This condition is
called Jaundice.
a) brain
b) liver c) kidney d) pancres
75.
When a
single gene has multiple phenotypic effects, the phenomenon is called:
a) multiple allelism b) pleiotropy
c) epistsis d) over dominance
76.
A woman
is being treated with injection Rh antiserum during early pregnancy. Guess the
genotype of her husband:
a) D/D b) D/d c) “a” or “b” d)
none of these
77.
On
looking at pure white cat, a Mahr Saghir’s student of genetics said, “Alas, the
cat is deaf”. What should not be the genotype of cat?
a) W/W b) W/w c) w/w d) “a” or “b”
78.
A normal
man whose father is albino has married an albino lady. Which disorders other
than albinism can occur in his children?
a) diabetes b) leukemia c) sickle cell anemia d) all of these
79.
Chromosome
7 is important due to:
a)
tritanopia b) Albinism c) hemophilia C
d) none of these
80.
How many
gene pairs contribute to wheat grain colour:
a) one b)
two c) three d) four
81.
Mendel’s
work remained neglected for ….. till 1900 AD.
a) 11 years b) 54 years c) 66 d) 34 years
82.
A bald
man Napolean has married a woman Linda who is also bald. Whose genotype is
homozygous recessive?
a) Napolean b) Linda c) both
“a” or “b” d) none
83.
A
Sagheer’s student is type O whose mother is type A and father is type AB. The
student should be:
a) h/h b) H/h c) H/H d) both “b” or “c”
84.
Which of
the following trait is not sex linked recessive?
a) tfm syndrome b)
deutranopia
c) hypophosphatemic
rickets d) blue cone
monochromacy
85.
Scientist who is concerned with legal cases of
rape and murder are:
a) Forensic
Scientist b) microbiologist
c) ethologist d) All of these
86.
The first Restriction enzyme was isolated in
1970 by:
a) Hamilton Smith b)
Hamilton O. Smith
c)
Hamilton D. Smith d)
None of these
87.
PCR is carried out in:
a) spectrometer b) centrifuge c) homogenizer d) thermocycler
88.
Ex-vivo gene therapy is used to treat children
having:
a) SCID b) AIDS c) cystic fibrosis d) both “a” & “b”
89.
Which of the following is a salt tolerant plant?
a) Acacia b) Mango c) shisham d) Arabidopsis
90.
PBR322 has antibiotic resistance gene
for:
a) Tetracycline b) streptomycin c) ampicilin d) both “a” &
“c”
91.
In which disease a patient lacks agene coding
for trans-membrane carrier of chloride ions:
a) SCID b) cystic fibrosis
c) cancer d)
None of these
92.
It took thirty days to get tobacco plants to
produce antigen for treatment of:
a) Hodgkin’s lymphoma b)
Non-Hodgkin’s lymphoma
c) Carcinoma d) both “b” & “c”
93.
What is not true for gel electrophoresis?
a) Used for DNA Test b) used for separation of fragments
of DNA c) used for separation of nucleotides d) None of these
94.
Which protein is present in all aerobic
organisms?
a) Cytochrome b b) hemoglobin c) Cytochrome c d) both b & c
95.
Who wrote an Essay on Principles of Population?
a) Malthus
b) Cuvier c) Darwin (1809-82) d) Wallace
96.
Who sent his theory to Darwin?
a) Wallace (1913-23)
b) George
Cuvier (1769-1832)
c) Malthus (1766-1834) d) Charles Lyll (1797-1875)
97.
In a population with two alleles B and b for a
particular locus, the allele frequency of B is 0.7, what would be the frequency
of heterozygote according to Hardy-Weinberg Principle?
a) 0.7 b) o.42 c) 0.21 d)
0.49
98.
Which of the followings is at the verge of
extinction in Pakistan?
a) Indus Dolphin b) Houbara Bustard c) black buck d) All
99.
Stamens of a flower evolved from:
a) sepals b) petals c) leaves d) All of these
100.
The large tanks in which millions of somatic
embryos are produced are called:
a) themocyclers b) Bioreactors c) biotanks d) both “a” & “b”
101.
Analogous organs are functionally alike but
structurally different e.g. wings of bat, birds and insects, are the examples
of:
a)
Convergent evolution b)
Homology
c) Divergent evolution d) all of these
102.
The ecology was coined
by:
a) E.
Haeckel b) Tanseley c) Grinnel d) None of these
103.
Living organisms which
can prepare their food are called:
a)
producers b) consumers c) decomposers d) None of these
104.
Which of the
followings is a biotic factor?
a) air b) water c) soil d) plant
105.
Which of the
followings is a macronutrient?
a) iron b) iodine c)
molybdenum d) phosphorus
106.
Charles Eton
considered the Niche as:
a) basic
role of an organism in community
b) job of an organism
c) profession of an organism d) None of these
107.
Which one is not
correct for littoral zone?
a) shallow water b) abundant light
c) planktons d) detritous feeders
108.
Grassland in temperate
climate is called:
a) Prairies
b) Savanna c) Taiga d)
Tundra
109.
The Sahara desert is
present in:
a) Asia b) Europe c) Africa d) Australia
110.
Productivity of an
ecosystem is indicated by:
a) Consumption of CO2 b) evolution of O2
c) Number of plants and algae d) both “a”
& “b”
111.
A lake divided into
how many zones?
a) two b) three c) four d) five
112.
Which one not correct?
a) Sadiqabad-Cholistan
b)
Layya-Thar
c) Sangher-Thar d) Gilgt-Tundra
113.
Conversion of solid wastes
into oils or gas is done by:
a) Bioconvertion b) pyrolysis c) hydrogenation d) All of these
114.
The study of human
populations and things which them is called:
a) Psychology b) demography c) Anthropology d) None
115.
Which one of the
followings is not the nutritional disorder?
a) Kwshiorkor b) goiter c) scurvy d)
ostioarthritis
116.
The rate of primary
production in temperate grassland is about ……….g/m2 annually.
a) 300-400 b) 700-1500 c)
1500-4000 d) more than 4000
117.
Homo sapiens have been
on the earth for about…….. years:
a) 10,000 b) 20,000 c) 40,000 d) 60,000
118.
Zooplanktons means:
a) Drifting
animals b) Drifting
plants c) fishes d) All of these
Nice mcqs and easy for me, solved all correctly. Thanks
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