School Teacher • 2017 • Technical Paper-I
Rolle’s theorem holds for the function f(x) = x^3 + bx^2 + cx on [1, 2] at the point 4/3, the value of b and c are
A)
b=8, c=-5
B)
b=5, c=-8
C)
b=-5, c=-8
D)
b=-5, c=8
Rolle requires f(1)=f(2): 1+b+c=8+4b+2c =>3b+c=-7. f'(4/3)=0: 16/3+8b/3+c=0 => b=-5,c=8.
School Teacher • 2017 • Technical Paper-I
Choose the missing terms out of the given alternatives: GH, JL, NQ, SW, YD, ?
A)
EJ
B)
FJ
C)
EL
D)
FL
First letters +3,+4,+5,+6,+7 => Y+7=F. Second +4,+5,+6,+7,+8 => D+8=L => FL.
School Teacher • 2017 • Technical Paper-I
Study the diagram below and identify the region representing youth who are employed but not educated.
A)
1, 4, 7
B)
4 only
C)
4, 7
D)
5, 6
Venn youth+employed minus educated: region 4 only as per typical diagram; 2,5,6 include educated.
School Teacher • 2017 • Technical Paper-I
lim_{x->0} (a^x - 1) / x =
A)
log 2^a
B)
1 log 2^a
C)
2 log a
D)
log a
Standard limit (a^x-1)/x -> ln a at 0.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
A single gene can cause multiple phenotypic effects by a phenomenon called
A)
co-dominance
B)
recessiveness
C)
pleiotropy
D)
linkage
Pleiotropy = one gene affects multiple traits.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Exchange of gases in leaves takes place through
A)
Palisade
B)
Stomata
C)
Parenchyma
D)
Chloroplasts
Gas exchange via stomatal pores on leaves.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
The water is transported up to the leaves through
A)
Cortex cells
B)
Parenchyma
C)
Xylem
D)
Phloem
Xylem conducts water and minerals upward via transpiration pull.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Evaporation of water from leaf cell is
A)
Transpiration
B)
Osmosis
C)
Diffusion
D)
Imbibition
Transpiration includes evaporation of water from mesophyll to atmosphere.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Kranz type of leaf anatomy is found in
A)
CAM plants
B)
C3 plants
C)
C4 plants
D)
All of these
Kranz anatomy with bundle sheath chloroplasts characteristic of C4 plants.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Oxygen is released by plants as a by-product of
A)
osmosis
B)
pinocytosis
C)
photosynthesis
D)
oxidative phosphorylation
Photolysis of water in photosynthesis releases O2 as by-product.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
During cell division, separation of chromosome (sister chromatids) occurs during
A)
prophase
B)
metaphae
C)
anaphase
D)
telophase
Anaphase sister chromatids separate to opposite poles.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Below is given alternative to the underlined and italicized part which may improve the sentence. Choose the correct alternative: If the room had been brighter, I would have been able to read for a while before bed time.
A)
If the room was brighter
B)
Had the room been brighter
C)
If the room are brighter
D)
No improvement
Original 'If the room had been brighter, I would have...' is correct Type3 conditional; Had... inversion also valid but no improvement needed.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
The term unit membrane was proposed by
A)
Robertson
B)
Nageli
C)
Singer
D)
Purkinje
J. David Robertson proposed unit membrane model in 1959 with trilaminar structure.
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)
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)
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 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)
The five kingdom classification was given by
A)
Linnaeus
B)
Leeuwenhoek
C)
Darwin
D)
Whittaker
R.H. Whittaker 1969 proposed five kingdoms.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Glycolysis is also known as
A)
Embden-Meyerhof-Paranas-Pathway
B)
Glycolate metabolism
C)
Cyclic electron transport
D)
Non-cyclic electron transport
Embden-Meyerhof-Parnas pathway.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Entomophily refers to pollination by
A)
Wind
B)
Water
C)
Animals
D)
Insects
Entomophily = insect pollination.
School Teacher • 2017 • Technical Paper-II (Botany & Zoology)
Parthenocarpic fruits means
A)
Fruit with immature seeds
B)
Seedless fruit
C)
A fruit developed without fertilization
D)
Only seeds and no fruits
Parthenocarpy = fruit development without fertilization, thus seedless; C is definition, B characteristic.
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.
