Science Review

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Flashcards on Science Review, created by amandaqt03 on 21/01/2016.
amandaqt03
Flashcards by amandaqt03, updated more than 1 year ago
amandaqt03
Created by amandaqt03 almost 9 years ago
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Question Answer
What is an adaptation? a trait that helps an organism survive and reproduce.
A variation is a _______ between individuals of the same species Difference
What are 2 function of the xylem? Allows movement of water & minerals from roots to leaves and provides structure columns of hollow, dead reinforced cells
What process can cause variation? Sexual reproduction
True/False individual organisms can adapt new traits in order to survive False
A process that occurs when organisms that are better adapted to their environment are able to survive and reproduce is called __________? Natural Selection
the wings of a seagull, the hooves of a horse and webbed feet of a duck are all examples of. . . A. Structural adaptation B. Physiological adaptation C. Behavioral adaptation A. Structural adaptation
The migration of a duck, the hibernation of a bear are examples of. . . A. Structural adaptation B. Physiological adaptation C. Behavioral adaptation C. Behavioral adaptation
saliva digesting carbohydrates and the protein web made by a spider are examples of. . . A. Structural adaptation B. Physiological adaptation C. Behavioral adaptation B. Physiological adaptation
Which adaptation would help an animal in an aquatic environment? Wings, webbed feet of fur? webbed feet
A birds diet consists of berries. During the summer when many berries are available, the competition between the birds for food will___________ . (Increase or Decrease) decrease
the side of a volcano following an eruption that is starting to grow small weeds is undergoing ________succession primary
the first species to colonize an area is a ________ ________ . pioneer species
______ is a example of a pioneer species . lichen
An adaptation where color matching is used so an organism can blend into its surroundings is? Camouflage
the process by which humans use animal breeding and plant breeding to select variations that are useful is called . . . selective breeding
adaptations of an organism might include. . . A. Camouflage B. Streamlined bodies C. ability of a plant to hold water in its stems D. All of the above D. All of the above
a scientist cross 2 different varieties of corn to produce 1 variety that has traits from both corns which help the corn fight against pests. What is this technique an ex. of . . . Selective breeding {artificial selection}
an ecosystem has the ability to support, maintain, or endure and remain productive over a long period of time is called its. . . sustainability
biodiversity is . . . the # of diff. species in an area
what is the biggest threat to biodiversity? Human activity
We sometimes introduce species into areas they are not usually found. This is called an ________ _______ invasive species
An example of habitat destruction is _____________ . This is a threat to biodiversity. deforestation
_______ ________ is the variety of all the genetic material that is present in organisms {due to sexual reproduction} genetic diversity
Why is diversity of genetic material important to the stability of ecosystems? it enables species to adapt to and cope w/ changes in the environment.
Darwin's theory of Natural Selection says that a _______ can adapt over time to survive and reproduce. Species
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