_____ 1). One organism taking resources from another while harming the other organism is ____.

_____ 2). Two different kinds of organisms living together for mutual benefit have a relationship of

_____ 3). The relationship between a tick and its host is an example of .

_____4). An organism which lives on or in another organism and derives its nutrition from that organism is a(n)

_____5). A type of symbiosis in which one organism benefits and the other does not benefit and is not harmed

_____ 6). What is the type of symbiosis in which both organisms’ benefit?

_____7). Which scenario describes a commensalism relationship?

_____ 8). Which pair of organisms share in a mutualistic relationship?

_____ 9). Egyptian plovers are birds that feed upon the parasites that live on crocodiles. In return, the crocodiles provide protection and a ready supply of food. What is the relationship between the Egyptian plovers and the crocodiles?

_____ 10). Acacia trees are the dominant vegetation in many parts of Africa. A symbiotic relationship exists between acacia tree and certain species of ants. The acacia trees provide food and housing for the ants, while the ants protect the trees from browsing insects such as beetles and grasshoppers. What is the relationship between the acacia trees and the ants?

_____ 11. An ecological model of the relationships that form a network of complex interactions among organisms in a community, from producers to decomposers, is called a(n)

_____12. Which graphic best represents the flow of energy in a biome?

_____13. Which tool shows the amount of energy available at each feeding level?

_____ 16. What is the difference between a food chain and a food web?

_____17. The arrows in a food web or chain show

_____ 18. Which way should the arrow point in a food chain or web?

_____ 19. Why are decomposers such an essential part of any food web and ecosystem?

_____ 20. A diagram that shows the amount of energy that moves from one feeding level to another in a food web is a(n)

_____ 21. The “father of modern genetics” is:

_____ 22. If an offspring is said to be homozygous recessive, which of the following could be its

_____ 23. Genotype refers to:

_____ 24. If fur color in mice is caused by the following: B= black and b= brown, choose the genotype for the organism which will have brown fur. (Assume black is dominant.)

_____ 25. Assume that in mice, B=black fur, b = brown fur. If a heterozygous black mouse mates with a homozygous brown mouse, what percent of their offspring will have black fur?

In Mendel’s pea plants, purple flowers (P) are dominant over white flowers (p). a. Create a Punnett square for a cross between a homozygous purple flowering plant and a homozygous white flowering plant. What is the phenotypic ratio?

What is the genotype ratio? Use the questions above. Write your answer in the form of dominant:recessive. Example 3:1

Create a Punnett Square for a cross between a heterozygous purple flowering plant and a homozygous white flowering plant. What is the phenotype ratio? What is the genotypic ratio?

Create a Punnett Square for a cross between a heterozygous purple flowering plant and a homozygous white flowering plant. What is the phenotype ratio? What is the phenotypic ratio?