#61.
The banana aphid transmits the virus that cause bunchy top. Which is not an alternate host of the aphid?
A
ginger
B
taro or gabi
C
bandera española
D
none of the above
Answer: none of the above
#62.
One method of control against nematode is to plant nematode antagonists. Which is not a good antagonist?
A
sesame
B
asparagus
C
sugarcane
D
none of the above
Answer: none of the above
#63.
Eggplant shoot/fruit borer (FSB) is considered to be the most destructive pest of eggplant
damaging leaves, shoots and fruits. It is also known as;
A
Xylosandrus compactus
B
Leucinodes orbonalis
C
Tetranychus sp.
D
Helicoverpa armigera
Answer: Leucinodes orbonalis
#64.
An herbicide with excellent control of grasses applied as post emergence.
A
fluazifop-butyl
B
trifluralin
C
butralin
D
pendimethalin
Answer: fluazifop-butyl
#65.
It is the process by which carbohydrates and energy-rich chemicals are formed from carbon dioxide and water, using light energy with the release of oxygen.
A
Respiration
B
Photosynthesis
C
Transpiration
D
Absorption
Answer: Photosynthesis
#66.
Refers to the series of complex oxidation-reduction reactions, whereby living cells obtain energy
through the breakdown of organic material.
A
Transpiration
B
imbibition
C
Synthesis
D
respiration
Answer: respiration
#67.
It is a stage in which some of the products of light reactions begin to participate, and where energy (ATP)
is required.
A
CAM
B
dark reaction
C
C3 pathway
D
C4 pathway
Answer: C3 pathway
#68.
Photosynthesis investigation was intensified in the 1930’s to 1950’s by ________.
A
Detection of PGA as first product
B
Use of carbon isotopes
C
Hatch and Slack
D
Blackman
Answer: Use of carbon isotopes
#69.
The chlorophyll is commonly found in:
A
mesophyll
B
mitochondria
C
vascular bundles
D
stomata
Answer: mesophyll
#70.
A photosynthetic reaction in which light transmitted to earth called solar radiation or radiant energy,
is absorbed by the chlorophyll.
A
photo-chemical reaction
B
enzymatic reaction
C
light reaction
D
dark reaction
Answer: light reaction
#71.
C3 plants have:
A
Only one CO2 fixation pathway
B
two CO2 fixation pathways separated in space
C
two CO2fixation pathways separated in time
D
three CO2 fixation pathways
Answer: Only one CO2 fixation pathway
#72.
An RQ value equal to one (RQ=1) means:
A
Fats are being respired
B
Anaerobic respiration is taking place
C
Aerobic respiration is involved
D
glucose is being respired
Answer: glucose is being respired
#73.
Absorption of light by the leaf is lowest in ______ color:
A
yellow
B
blue
C
green
D
red
Answer: blue
#74.
Cell turgidity in plants is maintained through:
A
plasmolysis
B
transpiration
C
respiration
D
translocation
Answer: transpiration
#75.
Products of photosynthesis from mature leaves are translocated to the growing areas through:
A
phloem loading
B
pressure potential
C
phloem translocation
D
pressure flow
Answer: phloem translocation
#76.
Passive movements of water in plants occur;
A
only through a semi-permeable membrane
B
from a cell with low potential to a cell with high potential
C
from a cell with high potential to a cell with low potential
D
through cytoplasmic streaming
Answer: from a cell with high potential to a cell with low potential
#77.
It is a fatty material found usually as a layer on the outer walls of cells forming the exterior surfaces
of land plants.
A
cutin
B
suberin
C
lignin
D
wax
Answer: cutin
#78.
Responsible for hardness and decay-resisting qualities of many woods.
A
cutin
B
chitin
C
suberin
D
lignin
Answer: lignin
#79.
Distinct submicroscopic particles which control the characteristic growth and chemical processes of
an organism.
A
chromosomes
B
genes
C
nucleus
D
cells
Answer: genes
#80.
Phytohormone which is also called the ripening hormone: