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English 28 Public

Life science review

Study Slideshow

Heredity information is found in cell's

chloroplasts

chromosomes

membrane

cytoplasm

15

The arrows in a food chain represent :

energy flow

water evaporation

sunlight

carbon dioxide

15

Most of the energy in a food web is supplied by the

green plants

bacteria

vulture

deer

15

What is the main source of oxygen for an ecosystem?

snails

fish

sunlight

green plants

15

The diagram shows the "family tree" of some animals. According to the diagram, which animal has the most recent common ancestor?

fish and primates

reptiles and birds

amphibians and birds

fish and rodents

15

Bacteria and fungi that break down dead plants and animals and return nutrients to the soil are called

consumers

decomposers

carnivores

producers

15

How does natural selection operate to cause change in a population?

ALL members adapt to environmental changes

members differ so that only some survive when e't changes

members do not adapt to environmental changes

members are equally able to survive if e't changes

15

In a certain species of army ant, the gene for long jaws (M) is dominant. If they wanted ants with only long jaws, which cross should they use?

mm x mm

mm x Mm

Mm x Mm

MM x mm

15

Which structure is found in plant cells but not in animal cells?

cell wall

cell membrane

cytoplasm

nucleus

15

Organisms with favorable traits reproduce more successfully than organism's with less favorable traits. This statement describes:

survival of the fittest

over production

inheritance

use and disuse

15

Overpopulation of any species harms the environment due to

recycling of resources

decreased use of resources

increased use of resources

production of extra resources

15

This is an example of

evoultion

cellular respiration

photosynthesis

diffusion

15

Which of the following is the correct order from simplest to most complex?

cell-system-tissue=organism-organ

cell-organism-organ-system-tissue

cell-organism-tissue-system-organ

cell-tissue-organ-system-organism

15

The diagram represents one life process that takes place in a leaf. Which life process is shown?

reproduction

digestion

photosynthesis

respiration

15

Cells identical to the parent cell are created by the process of

mutation

fertilization

mitosis

meiosis

15

Most genetic material is found in the

vacuole

lysosome

nucleus

membrane

15