Revision Sheet(grade 5 science)

Multiple Choice

____1.A domain is the broadest classification of living things. Which of the following names the three known domains?

A. / Eukarya, Bacteria, Archaea
B. / Animalia, Chordata, Mammalia
C. / family, genus, species
D. / Plantae, Fungi, Protista

____2.The organisms below are members of one of the six kingdoms of living things.

What do these organisms have in common with all the other members of this kingdom?

A. / They are microscopic.
B. / They feed on dead or decayed materials.
C. / They live in extreme environments and get energy from strange resources.
D. / They may look or act like plants, animals, or fungi.

____3An ecosystem is made of both biotic and abiotic things. Which describes the biotic part of the ecosystem?

A. / plants that grow in soil
B. / the animals that breathe oxygen
C. / all living things in the environment
D. / plants and animals that live in water

____4If you stand in the middle of an open field, you are standing among individual organisms, different species, populations, and communities. What makes up one of the populations in the field?

A. / all organisms of the same species
B. / the different communities in the ecosystem
C. / the communities that occupy the same niche
D. / all organisms that live in a certain part of the field

____5.The rainforests in South America support many ecosystems. These ecosystems are healthy. How does the diversity in the rainforests help determine the health of ecosystems?

A. / When diversity is high, there are more resources available.
B. / Resources in the environment last longer when the diversity is low.
C. / Less diverse ecosystems have less competition among the residents.
D. / Areas with high diversity have increased competition among the residents.

____6.Temperature, water, soil, and air are abiotic factors in an environment. They are not the same everywhere. What role do abiotic factors such as these play in an ecosystem?

A. / They control the changes of the seasons.
B. / They prevent competition among populations.
C. / They determine which plants and animals can live there.
D. / They help control the effect humans might have on the ecosystem.

____7.When scientists talk about an ecosystem and the type and number of animals and plants that live in one, they are also concerned about limiting factors. What are limiting factors?

A. / the rate at which the plants and animals in an ecosystem reach maturity
B. / the ratio of animals that lay eggs and those that give birth to live young
C. / the things that are necessary to support a population of organisms in an area
D. / the difference between trees that lose their leaves in an ecosystem and those that don't

____ 8-What does it mean for a backyard ecosystem to have low diversity?

A. / The number of insect species is very low.
B. / There are more insect species present in the environment.
C. / The plants species outnumber the insect and other animal species.
D. / There are only a few different species of plants, animals, and insects.

____9What part of an environment are a swarm of bees?

A. / Ecosystem
B. / Community
C. / Niche
D. / Population

____10.Cutting down trees to make room for human population growth has negative effects on native plants and wildlife in an area. If an insect species lives in only a certain type of plant and that plant is removed, what part of the insects' life is being affected?

A. / ecosystem
B. / community
C. / Niche
D. / Population

____11.Ecosystems are made of biotic and abiotic factors. Which term refers to a factor that is in short supply for the organisms that depend on it for survival?

A. / abiotic climate
B. / biotic resource
C. / climate factor
D. / limiting factor

____12.Why is an energy pyramid drawn in the shape shown below?

  1. The higher the level is, the fewer the animals.

  1. The higher the level is, the larger the organisms.

  1. The higher the level is, the more important the animals.

  1. The higher the level is, the more successful the predators.

13.Some organisms break down dead things for food. Which word describes these organisms?

  1. Consumers

  1. Decomposers

  1. herbivores

  1. producers

14..Som organisms break down dead things for food. Which word describes these organisms?

  1. consumers

  1. decomposers

  1. herbivores

  1. producers

____15.The picture below shows a food chain. The arrows show how energy flows from one living thing to the next.

In this food chain, what would be a possible energy source for the bacteria?

  1. all the animals

  1. all the organisms

  1. only the hawk

  1. only the predators

____16.The picture below shows a food web.

If the number of fish dropped suddenly, which of the following is a likely short-term effect in the food web?

  1. fewer squid

  1. fewer tiny water plants

  1. more penguins

  1. more seals

17- Which organisms are most responsible for cleaning up the remains of dead plants and animals?

  1. producers and consumers

  1. consumers and scavengers

  1. producers and decomposers

  1. scavengers and decomposers

18. The digestive system changes the food we eat into usable and unusable materials. Where do unusable materials go until disposal?

  1. to the liver

  1. to the pancreas

  1. to the large intestine

  1. to the small intestine

19. The organ shown below, identified with an arrow, is a digestive organ.

What happens when food reaches this organ?

  1. Acidic juices mix with the food.

  1. Food is stored, but no digestion occurs.

  1. The food is completely digested and absorbed into the bloodstream.

  1. The food is moved into the small intestine within two or three minutes.

____20.The small intestine contains tiny structures called villi. How do villi help the small intestine perform its function.

  1. They add acidic juices to food.

  1. They help eliminate solid wastes.

  1. They help the small intestine absorb nutrients.

  1. They help food move from the esophagus to the stomach.

____21.The urinary system is important to your body’s proper functioning. Which of these describes the function(s) of the urinary system?

  1. aids in reproduction

  1. breaks down solid food

  1. stores important nutrients and vitamins

  1. regulates fluid balance and eliminates waste

____22.Where is urine stored prior to urination?

  1. Bladder

  1. Kidneys

  1. large intestine

  1. stomach

____

23. The diagram below shows the parts of a human body system.

Which body system is shown?

  1. Circulatory

  1. Digestive

  1. Respiratory

  1. Urinary

____24.Len was alone, in a strange place, in a new situation, feeling afraid. His body reacted by producing the hormone adrenalin. How did the adrenalin make Len feel?

  1. He began to feel happy and cheerful.

  1. He felt calm and at ease.

  1. He became shaky and his heart thumped.

  1. He didn’t feel any different.

____25.Which organ removes waste from the blood, controls the blood’s salt level, and helps conserve water?

  1. Bladder

  1. small intestine

  1. kidneys

  1. liver

____26.Robert has grown taller again and needs larger clothes. Which gland produced the growth hormone that caused this change?

  1. adrenal

  1. pancreas

  1. pituitary

  1. thyroid

____

27.What would happen if the urinary system organs stopped working properly?

  1. Waste products would build up.

  1. The body would not digest solid food.

  1. The liver would take over and the person would not be affected.

  1. Blood would stop moving around the body.

____28.The nutrients you eat are passed to the bloodstream, where your cells can use them. How do nutrients in digested food reach the bloodstream?

  1. They are absorbed by the large intestine.

  1. They pass from the esophagus into the blood.

  1. They pass from the small intestine through tiny blood vessels into the blood.

  1. They are absorbed into the bloodstream through structures in the stomach wall.