Biology Review

The symbiotic relationship between a flower and the insect that feeds on its nectar is an example of _, because the flower provides the insect with food and the insect pollinates the flower.

• commensalism

• parasitism

• mutualism

• predation

Tags

NGSS.MS-LS2-2

Which is the biotic factor that affects the size of a population in a specific ecosystem?

• number and type of predators in the ecosystem

• type of soil in the ecosystem

• concentration of oxygen in the exosystem

• average temperature of the ecosystem

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

An organisms' niche is

• all the physical and biological factors in the organisms' environment

• where an organism lives and how it uses its environment

• the range of temperature that the organism needs to survive

• a full description of the place an organism lives

Which of the following best describes a dominant allele?

• An allele that is masked by a recessive allele

• An allele that is expressed only in the homozygous state

• An allele that is always expressed when present

• An allele that is found only in males

If a heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt), what is the probability of getting a short plant?

• 0%

• 25%

• 50%

• 75%

Tags

DOK Level 2: Skill/Concept

In a Punnett square, what does each box represent?

• A possible genotype of the offspring

• A possible phenotype of the offspring

• The genotype of the parents

• The phenotype of the parents

Tags

DOK Level 2: Skill/Concept

What is the genotype of an organism with two identical alleles for a trait?

• Heterozygous

• Homozygous

• Dominant

• Recessive

Tags

DOK Level 2: Skill/Concept

What is the phenotype of an organism?

• The genetic makeup of an organism

• The physical appearance of an organism

• The combination of alleles in an organism

• The location of genes on a chromosome

Tags

DOK Level 2: Skill/Concept

Biodiversity is important to human society because it

• provides food and goods

• is a natural resource

• provides medicines

• all of the above

Tags

NGSS.MS-LS2-5

Protecting an entire ecosystem will ensure that

• existing parks and reserves will expand

• captive breeding programs will succeed

• governments will set aside land

• natural habitats and the interactions of many different species will be preserved

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-5