Mizoram Horticulture Service • 2017 • Technical Paper-III
Cultures of plant tissues from which of the following is not totipotent?
A)
Cambium
B)
Pith
C)
Cortex
D)
None of these
Cambium, pith and cortex cells can be totipotent under suitable culture conditions; none is inherently excluded.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Which of the following is true for release of allelopathic compounds by weeds affecting the growth of crops?
A)
Released from weed plants into the soil as root exudates
B)
Release by decomposition products of their dead, worn out tissues
C)
Release volatile allelopathic compounds from their foliage
D)
All of these
Allelopathic compounds may be released through root exudates, decomposition of residues, and volatile compounds from foliage.
Mizoram Horticulture Service • 2017 • Technical Paper-III
What is the LCM of 12, 18, and 15?
A)
240
B)
120
C)
180
D)
None of these
LCM(12,18,15) = 2^2 × 3^2 × 5 = 180.
Mizoram Horticulture Service • 2017 • Technical Paper-III
The highest energy requirement for farm operations in agriculture sector was for ………
A)
Irrigation
B)
Fertilizer application
C)
Seed sowing
D)
Harvesting
Irrigation is a major energy-consuming farm operation and is the intended answer in this item.
Mizoram Horticulture Service • 2017 • Technical Paper-III
The opening and closing of stomata is controlled by the guard cells, in which the stomata remains open in the presence of light, because the guard cells
A)
Take up water and become turgid and opening the pore
B)
Lost water and and pull the inner walls apart
C)
The rigid inner walls are opened by light penetration
D)
Higher temperature releases water vapour and thus open the pore
Light promotes ion uptake into guard cells, water enters, turgor rises and the stomatal pore opens.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Acidic soils can be amended by application of
A)
Sulfur
B)
Vinegar
C)
lime
D)
Organic fertilizers
Acidic soils are commonly neutralized with lime, which raises soil pH.
Mizoram Horticulture Service • 2017 • Technical Paper-III
For control of noxious weeds like Lantana, Saccharum and Striga spp., the most effective method is
A)
Selective control
B)
Quarantine measures
C)
Weed eradication
D)
All of these
For noxious invasive weeds such as Lantana, Saccharum and Striga, eradication is the most direct control objective.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Plants absorb nitrogen from the soil solution as
A)
Nitrate and ammonium
B)
Orthophosphate and ammonium
C)
Nitrite and amino acids
D)
Ammonium and sulphate
Roots mainly absorb mineral nitrogen from soil solution as nitrate and ammonium.
Mizoram Horticulture Service • 2017 • Technical Paper-III
The following vectors are used to transfer genes in plants, exception is
A)
Viruses
B)
Plasmids
C)
Transposable elements
D)
Bacteria
Bacterial cells are not themselves vectors in the listed sense; viruses, plasmids and transposable elements can serve as gene-transfer tools.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Which should come next in the following letter Series? ACFHKMPRUW?
A)
Y
B)
Z
C)
T
D)
G
The letter positions increase by +2, +3, +2, +3, ... giving the next letter after W as Y.
Mizoram Horticulture Service • 2017 • Technical Paper-III
The path for ascent of sap in plants is the
A)
Phloem
B)
Xylem
C)
Cortex
D)
Epidermis
Water and dissolved minerals move upward primarily through xylem.
Mizoram Horticulture Service • 2017 • Technical Paper-III
In a certain code KINETIC is written as TICDKIN. How is MACHINE written in that code?
A)
ENIGMAC
B)
INEGMAC
C)
INEGCAM
D)
ENIGCAM
KINETIC is rearranged as its last three letters + middle letter + first three letters: TIC + E + KIN. MACHINE similarly gives INE + G + MAC = INEGMAC.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Which of the following fertilizers is not suitable for use in fertigation due to their solubility?
A)
Potassium sulphate
B)
Urea
C)
Phosphoric acid
D)
None of these
Potassium sulphate has comparatively limited solubility and can be unsuitable for fertigation; urea and phosphoric acid are commonly soluble fertigation materials.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Farm management is ______ oriented
A)
Crop
B)
People
C)
Livestock
D)
Income
Farm management is primarily income/profit oriented; it seeks economic efficiency rather than maximum physical output alone.
Mizoram Horticulture Service • 2017 • Technical Paper-III
The parts of a tractor that mainly requires attention in giving lubrication, besides the engine unit and the engine accessories is
A)
The clutch
B)
The transmission
C)
The chasis
D)
All of these
Clutch, transmission and chassis components all require lubrication/maintenance attention.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Old woman’s son is my daughter’s uncle, then what relation has the old woman to me?
A)
Sister
B)
Mother
C)
Grandmother
D)
Mother - in - law
Under the intended relationship, the old woman's son is the speaker's daughter’s uncle, i.e. the speaker's brother; therefore the old woman is the speaker's mother.
Mizoram Horticulture Service • 2017 • Technical Paper-III
The main focus for an efficient Farm management, besides other factors, will be
A)
Supervising and handling day-to-day routine of a farm
B)
Increasing crop yield
C)
Increasing the farm income through sound business organization
D)
Upgradation of farm technologies
Efficient farm management ultimately aims at increasing farm income through sound organization and resource use.
Mizoram Horticulture Service • 2017 • Technical Paper-III
The parent of Amrapali, a mango cultivar improved through hybridization, is
A)
Ratna x Dashehari
B)
Ratna x Alphonso
C)
Dashehari x Neelum
D)
Neelum x Alphonso
Amrapali mango was developed from the cross of Dashehari and Neelum.
Mizoram Horticulture Service • 2017 • Technical Paper-III
When cryopreservation is done at a temperature of -1960C in ______ the plant cells stay in completely inactive state and can thus be conserved for long periods
A)
Solid carbon dioxide
B)
Deep freezers
C)
Vapour phase nitrogen
D)
Liquid nitrogen
Plant material is conventionally cryopreserved at about −196°C in liquid nitrogen.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Chose the odd one
A)
Pear
B)
Apple
C)
Orange
D)
Guava
Orange is the only citrus fruit; pear, apple and guava are non-citrus.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Estimating the outcome or returns of a farm for a part of the business, that may also be used in aid to full budgeting, it is referred to as
A)
Partial budgeting
B)
Enterprise budgeting
C)
Complete budgeting
D)
None of these
Partial budgeting estimates the effect of a proposed change or a part of the farm business, rather than the whole farm.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Production of triploid plants which are self sterile and usually seedless, is achieved through
A)
Pollen culture
B)
Embryo culture
C)
Endosperm culture
D)
Anther culture
Triploids are commonly produced through endosperm culture and are often sterile/seedless.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Somatic hybrids in citrus were obtained with chemical fusion of competent citrus protoplasts, of which one parent was a protoplasts and the second parent was isolated from
A)
Seedling leaves
B)
Nucellus
C)
Embryo
D)
Ovary
PET stands for positron emission tomography.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Maximum absorption of water in plants takes place in the ….
A)
Zone of root hairs
B)
Root tip
C)
Meristematic zone
D)
Lateral roots
Root hairs greatly increase absorbing surface area and are the main region of water uptake.
Mizoram Horticulture Service • 2017 • Technical Paper-III
Which one of the pair is different from other pairs?
A)
Permission-Obstruction
B)
Abundant-Replete
C)
Convergent-Divergent
D)
Transparent-Opaque
Permission–obstruction, convergent–divergent and transparent–opaque are antonym pairs; abundant–replete are synonyms.
