School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
The first human species to effectively use fire was
A)
Homo sapiens idaltu
B)
Homo erectus
C)
Homo habilis
D)
Australopithecus afarensis
Homo erectus (~1-0.4 Mya) first controlled use of fire at Zhoukoudian etc.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Select a suitable figure from the Answer Figures that would replace the question mark (?)
A)
1
B)
2
C)
3
D)
4
Figure not provided in text; provisional answer 2 – typical alternative pattern for such series. [Image missing]
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
The maximum growth rate is observed during
A)
Lag phase
B)
Log phase
C)
Stationary phase
D)
Senescence
Log/exponential phase shows fastest growth.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Respiratory quotient (R.Q) is
A)
Ratio between NH3 and O2
B)
Ratio between CO2 and O2
C)
Ratio between CO2 and H2O
D)
Ratio between H2O and NH3
RQ = CO2 produced / O2 consumed.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Known as the most influential book in biology, On the Origin of Species was written by
A)
Charles Robert Darwin
B)
Alfred Russel Wallace
C)
Thomas Henry Huxley
D)
Charles Lyell
Charles Robert Darwin published On the Origin of Species in 1859.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Arrange the words given below in a meaningful sequence: 1. Unemployment 2. Disease 3. Poverty 4. Population 5. Death
A)
4, 1, 2, 3, 5
B)
4, 1, 2, 5, 3
C)
4, 1, 3, 2, 5
D)
4, 5, 1, 2, 3
Meaningful chain: Population (4) -> Unemployment (1) -> Poverty (3) -> Disease (2) -> Death (5).
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Rigworm is caused by
A)
bacteria
B)
fungi
C)
Plasmodium
D)
Entamoeba
Ringworm caused by dermatophyte fungi Trichophyton, Microsporum, Epidermophyton.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Which one will replace the question mark? A C E / 2 4 6 / G I ? / 3 5 / M Q V / 5 9 14
A)
J8
B)
K8
C)
L8
D)
M8
Letters +2: A C E, G I K, M Q V. Numbers: 2 4 6 (+2), 3 5 8 (+2,+3), 5 9 14 (+4,+5). So K=11 and 8 => K8.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Formation and release of a fully-formed egg is known as
A)
capacitation
B)
oogenesis
C)
ovulation
D)
amphimixis
Ovulation = release of mature ovum from ovary.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Gymnosperms do not bear fruits because
A)
They are pollinated
B)
They lack ovary
C)
They produce spores
D)
They do not have seeds
Gymnosperms have naked seeds, ovules not enclosed in ovary, so no true fruit.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
The power house of cell is
A)
Ribosome
B)
Golgi complex
C)
Mitochondria
D)
Lysosome
Mitochondria generates ATP via oxidative phosphorylation – powerhouse.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Bt crops are genetically created to make them
A)
resistant to insect
B)
resistant to pesticide
C)
resistant to bacterial infection
D)
resistant to desiccation
Bt crops express Bacillus thuringiensis Cry toxin conferring insect resistance.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
The first documented example of natural selection in action was
A)
antibiotic resistance
B)
drug resistance in Plasmodium
C)
pesticide resistance in insects
D)
melanism in peppered moths
Industrial melanism in Biston betularia peppered moths documented by Kettlewell 1950s as first natural selection observation.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
A DNA molecule obtained from plasmids and viruses used to create a recombinant DNA is called
A)
restriction enzyme
B)
vector
C)
promoter
D)
operator
Vector from plasmid/virus carries foreign DNA to create recombinant DNA.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Double fertilization was discovered by
A)
Hofmeister
B)
Leeuwenhock
C)
Hooke
D)
Nawaschin
S.G. Nawaschin 1898 discovered double fertilization in Lilium/Fritillaria.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Chlorofluorocarbons (CFCs) cause
A)
Depletion of CO2
B)
Depletion of ozone layer
C)
Increase of ozone layer
D)
Increase of CO2
CFCs release Cl radicals depleting ozone.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Natality in a population refers to
A)
death rate
B)
national competence
C)
birth rate
D)
national fecundity
Natality = birth rate, mortality = death rate.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Choose the box that is similar to the box formed from the given sheet of paper (X).
A)
1
B)
2
C)
3
D)
4
Box formation figure not provided; provisional answer 1 based on typical cube net. [Image missing]
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
The number of major mass extinction on Earth is
A)
4
B)
5
C)
6
D)
7
Five major mass extinctions: Ordovician, Late Devonian, Permian-Triassic, Triassic-Jurassic, Cretaceous-Paleogene.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
The process of yolk deposition and formation is known as
A)
vitellogenesis
B)
albuminosis
C)
spermiogenesis
D)
choriogenesis
Vitellogenesis = yolk protein synthesis/deposition in oocyte.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Diffusion of water across a semipermeable membrane is called
A)
Osmosis
B)
Apoplast
C)
Symplast
D)
Guttation
Osmosis is passive diffusion of water across semipermeable membrane.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Excessive deposition of phosphorus (phosphate) in water can cause
A)
algal bloom
B)
plankton depletion
C)
carbonation
D)
leaching
Excess phosphate causes eutrophication leading to algal bloom.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Numerous microbes live inside our gut with reciprocal benefits, which is an example of
A)
parasitism
B)
competition
C)
predation
D)
mutualism
Reciprocal benefit symbiosis in gut flora = mutualism.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Ozone layer is present in
A)
Troposphere
B)
Stratosphere
C)
Mesosphere
D)
Ionosphere
Ozone layer ~15-35 km in stratosphere absorbing UV.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Peptide formation (translation) occurs in the cell organelle
A)
Golgi complex
B)
ribosome
C)
nucleus
D)
peroxisome
Translation/protein synthesis on ribosomes.
