Body Systems
Plant Systems
Ecological Succession
Community Interactions
Random
100

Which four body systems interact to allow a person to sneeze?

Muscular, immune, nervous, respiratory

B Nervous, respiratory, circulatory, skeletal

C Respiratory, endocrine, skeletal, circulatory

D Lymphatic, skeletal, respiratory, muscular

Muscular, immune, nervous, respiratory

100
Small openings called ______ are found on the underside of must leaves and allow water vapor and other gases to enter or leave the plant cells.


A Spores

B Stomata

C Chloroplast

D Xylem

B Stomata

100

After a wheat field is cleared, wild grasses and weeds begin growing. This process is considered —

F primary succession because pioneer species appear 

G primary succession because there are no large trees

H secondary succession because soil is already present

J secondary succession because the field contains inorganic matter

H secondary succession because soil is already present

100

What would be the most likely effect of a wildfire that burned a large area of a forest?

F More sugars and starches would be available for animals in the area.

G The availability of fossil fuels for use by industries in the area would be reduced.

Less carbon dioxide would be removed from the atmosphere in the area by plants.

J An increase in animal respiration would increase the release of carbon dioxide in the area.

Less carbon dioxide would be removed from the atmosphere in the area by plants.

100
Which of the following body systems work together for support, protection, and movement?


A respiratory and cardiovascular 

B skeletal and muscular 

C skeletal and integumentary 

D digestive and respiratory 


B skeletal and muscular 

200

Which statement best describes an interaction between the muscular system and the respiratory system?

A The hormone adrenaline causes blood vessels to contract and send more blood to major muscles.

B Metabolic wastes generated by muscle cells are eliminated in urine.

C The diaphragm contracts causing the chest cavity to expand, which draws air into the lungs.

D Nutrients absorbed in the small intestine are transported in blood to the brain

C The diaphragm contracts causing the chest cavity to expand, which draws air into the lungs.

200

Which statement best describes an interaction that will allow a flowering plant to reproduce by self-pollination?

F An anther is transferred from a filament to another filament within the same flower.

G An ovule is transferred from the ovary to a petal on a different flower.

H A pollen grain is transferred from an anther to the stigma of the same flower.

J An ovary is transferred from a flower on one plant to a flower on a different plant.

H A pollen grain is transferred from an anther to the stigma of the same flower.

200

What is the goal of the pioneer species in Primary Succession? 

A To kill the dead materials after a disaster 

B To be the first organisms to maintain residency on the area

C To rebuild soil 

D To put fresh oxygen into the air 

C To rebuild soil 

200

During secondary succession, which of these best describes why decomposing pioneer plants give way to larger, more complex plants species, such as hardwood trees?

F Increased amounts of sunlight are able to reach the ground while the pioneer species are decomposing.

G Increased soil temperatures from decomposing pioneer species help tree seeds germinate more quickly.

H Increased amounts of decomposing pioneer species remove nutrients that tree seedlings need to grow and mature.

Increased amounts of soil from decomposing pioneer species allow plants with more extensive root systems to become established

Increased amounts of soil from decomposing pioneer species allow plants with more extensive root systems to become established

200

Overfishing is causing the decline of fish populations, such as Eastern Atlantic bluefin tuna in the Mediterranean. Eastern Atlantic bluefin tuna are caught faster than they can reproduce. Which statement describes the most likely effect that overfishing will have on this ecosystem?

F Overfishing makes the ecosystem more stable by increasing competition for limited resources.

G Overfishing decreases the stability of the ecosystem by disrupting food chains.

H Overfishing has no effect on ecosystem’s stability because it affects one species out of many.

J Overfishing increases ecosystem stability by allowing prey populations to overproduce.

G Overfishing decreases the stability of the ecosystem by disrupting food chains.

300

Breaking down food for nutrients involves many body systems. A student made a partial list of the processes that occur.

• Salivary enzymes begin to break down starch molecules in food.

• Gastrointestinal enzymes are released in response to a hormone signal.

• Nutrients are absorbed into the bloodstream from the small intestine.

Which body systems interact most directly in the three listed processes?

F Digestive Integumentary Circulatory 

H Circulatory Excretory Immune

G Excretory Immune Muscular

J Circulatory Digestive Endocrine

J Circulatory Digestive Endocrine

300

Gibberellins are hormones produced in the root tips of plants. The plant uses these hormones to stimulate the growth of shoots. How are gibberellins able to affect other parts of the plant?

F Gibberellins are absorbed through the stomata and attach to chloroplasts.

Gibberellins are transported through vascular tissues to other parts of the plant.

H Gibberellins become concentrated within the tissues of the plant during mitosis.

J Gibberellins become modified once they infect healthy cells and are later released to infect other cells.

Gibberellins are transported through vascular tissues to other parts of the plant.

300

Grassland ecosystems in Texas have evolved to depend on periodic fires to return nutrients to the soil and encourage plant reproduction. Humans have prevented fires in many of these grassland areas, resulting in plant and animal communities with little diversity. Wildlife biologists often recommend purposefully starting fires called prescribed burns, which are monitored and controlled, in grassland ecosystems every 3 to 4 years. These biologists observe greater diversity in plant and animal life in the years following a prescribed burn.

What natural processes are the biologists attempting to imitate?

F Biomagnification

Succession

H Population bottleneck

J Species extinction

Succession

300

The ocean sunfish (Mola mola) is a large, flat fish that spends most of its time in deep water feeding mainly on jellyfish. Sunfish often have many species of copepods, small crustaceans, that bury their heads into the soft tissue of the sunfish. Sunfish will swim to the surface of the water and lie sideways, allowing seabirds to eat the copepods from their skin.

Which list describes the types of relationships the sunfish has with other marine organisms?

Seabirds:mutualism Jellyfish:predation Copepods:parasitism

Seabirds:parasitism Jellyfish:commensalism Copepods:predation

Seabirds:predation Jellyfish:mutualism Copepods:commensalism

Seabirds:commensalism Jellyfish:parasitism Copepods:mutualism

Seabirds:mutualism Jellyfish:predation Copepods:parasitism

300

Leaf-cutter ants harvest leaves and carry them to fungi that convert plant material into a usable form for the ants to digest. The fungi depend on the leaves for nutrients. The ants also produce an antibiotic on their bodies that helps protect the fungi from harmful bacteria. Which of these explains the relationship between the leaf-cutter ants and the fungi?

A Predation, because the ants feed on the fungi

B Mutualism, because both the ants and the fungi benefit from each other

C Competition, because both organisms consume the same resource for energy

D Commensalism, because the ants receive energy from the fungi and the fungi are unaffected

B Mutualism, because both the ants and the fungi benefit from each other

400

When the skin comes in contact with an irritant, receptors in the skin send signals to the spinal cord. The signal is then sent to the brain for processing, and the individual begins to scratch the affected area. Which two systems are most likely interacting when a person experiences itching caused by a skin irritant?

A Circulatory and excretory

B Integumentary and nervous

C Digestive and muscular

D Respiratory and lymphatic

B Integumentary and nervous

400

Positive thigmotropism is a response in plants in which they move and grow toward an object the plant comes into physical contact with, usually curling around the object. 

This response of the shoot system benefits the plant by allowing the plant to —

A produce more pollen for pollinators

B take in more carbon dioxide to convert into glucose 

C absorb more water to transport to the leaves

D reach more sunlight for photosynthesis

D reach more sunlight for photosynthesis

400

Which of the following is true in a climax community? 


A the community will constantly evolve and change

B if one species dies, a new species will fulfill the same role

C They are stable for a long time, with the same species maintaining their population


D it goes through a major change called "climax" every few hundred years


C They are stable for a long time, with the same species maintaining their population
400

Which answer choice best describes a community?

F Praying mantises caring for their young

G Three-spined sticklebacks living in estuaries

Different species of lizards occupying the same niche in a desert

J Roosting mother bats recognizing their offspring

Different species of lizards occupying the same niche in a desert

400

Biting flies can transmit diseases and cause loss of blood for animals in nature. Horses have developed behaviors to repel biting flies such as ear twitching, head tossing, leg stomping, and tail swishing. Which statement best describes the interaction between body systems that allows horses to repel biting flies? 

A The nervous system senses the biting flies and sends a signal to the muscular system to move.

B The circulatory system senses the biting flies and sends a signal to the nervous system to move.

C The muscular system senses the biting flies and sends a signal to the integumentary system to move. 

D The integumentary system senses the biting flies and sends a signal to the circulatory system to move.

A The nervous system senses the biting flies and sends a signal to the muscular system to move.

500

The fuzzy millipede, Polyxenus fasciculatus, is found in Texas and is preyed upon by most species of ants. To protect itself against the ants, it ejects fibers from a tuft located at the tail end of its body. The tufts have hooks at the tips and barbs along their length that lock and interlink with the ant’s setae, small hairs that cover the body of the ant. When an ant attacks, the millipede flexes its back end toward the ant and wipes the tufts against it. As the ant attempts to remove the tufts, it entangles itself more, becoming immobilized.

Which two systems most directly interact in the fuzzy millipede’s defense against ants?

Muscular and integumentary

B Immune and muscular

C Integumentary and endocrine

D Endocrine and immune

Muscular and integumentary

500

The plant tissue that carries food materials DOWNWARD from the leaves to the rest of the pant is the ______. 

A Phloem 

B Stomata 

C Chlorophyll 

D Xylem 

A Phloem 

500

During secondary succession, which of these best describes why decomposing pioneer plants give way to larger, more complex plants species, such as hardwood trees?

F Increased amounts of sunlight are able to reach the ground while the pioneer species are decomposing.

G Increased soil temperatures from decomposing pioneer species help tree seeds germinate more quickly.

H Increased amounts of decomposing pioneer species remove nutrients that tree seedlings need to grow and mature.

Increased amounts of soil from decomposing pioneer species allow plants with more extensive root systems to become established

Increased amounts of soil from decomposing pioneer species allow plants with more extensive root systems to become established

500

A new predator of rabbits has been introduced within an ecosystem. This new predator runs faster than the native predators of rabbits. Which statement describes what will most likely occur in the rabbit population due to the introduction of the predator?

A The rabbits will mutate their genes and express genes that increase their speed.

B Slower rabbits will develop stronger legs and pass this trait to their offspring.

C Rabbits will mate and produce offspring with a different species that has faster runners.

D Faster rabbits will survive and reproduce increasing the average speed of the rabbit population.

D Faster rabbits will survive and reproduce increasing the average speed of the rabbit population.

500

Which system includes bones, cartilage, and ligaments? 

A nervous 

B muscular 

C skeletal 

D excretory 

C skeletal 

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