STAAR Biology Review

Quiz
•
Science
•
12th Grade
•
Hard
+7
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these explains the relationship between the leaf-cutter ants and the fungi?
Predation, because the ants feed on the fungi
Mutualism, because both the ants and the fungi benefit from
each other
Competition, because both organisms consume the same resource for energy
Commensalism, because the ants receive energy from the fungi and the fungi are unaffected
Answer explanation
The relationship between the leaf-cutter ants and the fungi is mutualism. Both the ants and fungi benefit from each other.
Tags
NGSS.MS-LS2-2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Some relationships between species found in the Texas Gulf Coast are shown in the food web.
Which energy pyramid best models energy flow in the Texas Gulf Coast community?
Answer explanation
Stone crabs consume gulf pipefish, and gulf pipefish consume aquatic plants.
Tags
NGSS.HS-LS2-3
NGSS.HS-LS2-4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In some coral reefs, a symbiotic relationship exists between pygmy seahorses and sea fans. The pygmy seahorse can wrap its tail around the branches of the sea fan. This allows the pygmy seahorse to be camouflaged within the sea fan, protecting it from predators. The pygmy seahorse does not harm or benefit the sea fan while it grasps the branches with its tail. What is the correct classification of this symbiotic relationship?
Predator/prey
Mutualism
Commensalism
Parasite/host
Answer explanation
Commensalism is the symbiotic relationship that exists. The pygmy seahorse does not harm or benefit the sea fan while it grasps the branches with its tail.
Tags
NGSS.HS-LS2-6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
After a wheat field is cleared, wild grasses and weeds begin growing. This process is considered —
primary succession because pioneer species appear
primary succession because there are no large trees
secondary succession because soil is already present
secondary succession because the field contains inorganic matter
Answer explanation
After a wheat field is cleared, wild grasses and weeds begin growing due to secondary succession, since soil is already present. Primary succession can only occur in areas where life was not previously present e.g., newly formed volcanic rock.
Tags
NGSS.MS-LS2-4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
During an extended dry season in an area, the majority of the ground cover dried up. Which description best explains how this would affect the ecosystem in that area?
The ecosystem would become less stable because the ranges of many organisms would expand and overlap.
The ecosystem would become more stable because there would be less competition among canopy plants.
The ecosystem would become less stable because less energy would be available to it from the decrease in producers.
The ecosystem would become more stable because organisms in higher trophic levels would be able to find prey more easily.
Answer explanation
The ecosystem would become less stable if most of the ground cover dried up. Less energy would be available to the ecosystem due to a decrease in the number of producers.
Tags
NGSS.HS-LS2-3
NGSS.HS-LS2-6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these shows an example of an insertion mutation?
A
B
C
D
Answer explanation
An insertion mutation is a result of inserting new nitrogenous bases into DNA. In this model, new “K” and “L” genes have been inserted into the chromosome.
Tags
NGSS.HS-LS3-2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A model of the genetic control of coat color in rabbits is shown.
Which Punnett square represents a cross that would produce albino offspring?
Answer explanation
The albino allele (c) is recessive to all other alleles, so expression of the albino phenotype requires two copies of the allele. This option is the only option where two albino alleles would result.
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
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