Science 9 Summative Test No. 4 (Modules 4 and 5)
Quiz by Rizalyn Santos
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- Q1
Which of the following best describes an adaptation?
a trait that allows an organism to be better suit for survival
a segment of DNA that codes for a trait
a harmful trait that hurts an organism's chance of survival
a tight bundle of genetic material in the nucleus of cells
60sS9LT -Ie - f -30 - Q2
A drought has hit this grassland biome. How will this affect the rabbit population?
The rabbit population will become extinct immediately.
The rabbit population will stay the same.
The rabbit population will decrease.
The rabbits will increase in number.
60sS9LT -Ie - f -30 - Q3
Limiting factors keep a population from increasing in size and help balance the ecosystem. Which of the following naturally limits the growth of insects in a community?
over collection
presence of insect eating animals
slow rate of reproduction
application of pesticides
60sS9LT -Ie - f -30 - Q4
If 60 carabaos live in 1.5 sq. km. area, what is their population density per sq. km.?
0.025
40
90
58.5
60sS9LT -Ie - f -30 - Q5
Which of the following species is already extinct in the Philippines?
60sS9LT -Ie - f -30 - Q6
Which one will NOT happen to population size when the environment nears the carrying capacity?
death rate increases
population size decreases
reproductive rate increases
population size remains stable
60sS9LT -Ie - f -30 - Q7
Habitat loss has led to the death of many of the prey of the Philippine forest. As a result, the Philippine Eagle is in danger of becoming extinct soon and is said to be
extinct
endangered
migratory
hibernating
60sS9LT -Ie - f -30 - Q8
If a disease destroying rice plants in a field swept through an ecosystem, what would happen to the rice eating bird population in the field ?
The bird population would become extinct.
The bird population would infinitely increase.
The bird population would stay the same.
The bird population would decrease.
60sS9LT -Ie - f -30 - Q9
If the carrying capacity of a predator decreases, what will happen to the carrying capacity of the prey?
will fluctuate
will stay the same
will decrease
will increase
60sS9LT -Ie - f -30 - Q10
In a terrestrial ecosystem, which of the following is the best example of a limiting factor for a rabbit population?
sunlight
soil
grass available
squirrel population
60sS9LT -Ie - f -30 - Q11
A farmer is experiencing a problem in growing his crops. Most of the leaves of the crops are turning yellow. Which of the following will likely result from the yellowing of the leaves of the crops?
The production of the food will remain the same.
None of the choices.
It will decrease the production of the food.
It will increase the production of the food.
60sS9LT -lg -j -31 - Q12
Which part of the cell does photosynthesis takes place?
60sS9LT -lg -j -31 - Q13
The light-dependent reaction of photosynthesis must come first before the light-independent reaction because its products are important to the fixation of carbon-dioxide. Which of the following is/are the products of the light-dependent reaction?
NADPH only
ADP only
NADPH and ATP
ATP only
60sS9LT -lg -j -31 - Q14
From what compound does the oxygen released during photosynthesis come?
ATP
glucose
carbon dioxide
water
60sS9LT -lg -j -31 - Q15
Which of the following are tiny openings on the underside of the leaf that help the plant take in carbon dioxide and release oxygen?
xylem
phloem
stomata
chlorophyll
60sS9LT -lg -j -31
