Natural Selection Created by Educational Technology Network. www.edtechnetwork.com 2009

Natural Selection Tying in Genetics 10 20 30 40 50 Biotic vs. Abiotic Population Change Adaptations Tying in Genetics 10 20 30 40 50

Question 1 - 10 Name 2 abiotic features in an ocean ecosystem.

Answer 1 – 10 Water, sand, rocks, temperature, etc.

Question 1 - 20 Living parts of an ecosystem are called ____________

Answer 1 – 20 Biotic factors

Question 1 - 30 A biotic or abiotic resource that causes population size to stop growing or decrease is called a ______________

Answer 1 – 30 Limiting factor

Question 1 - 40 Name an abiotic factor fish rely on to survive.

Answer 1 – 40 Water, dissolved oxygen, sunlight, temperature

Question 1 - 50 Give an example of how abiotic and biotic factors work together

Answer 1 – 50 Answers will vary

Question 2 - 10 Organisms with high levels of fitness are more likely to ________________ .

Answer 2 – 10 Survive and reproduce Pass on their traits

Question 2 - 20 A trait that helps an organism survive and reproduce is called an _____________

Answer 2 – 20 adaptation

Question 2 - 30 Dark peppered moths were once mainly eaten, then something happened and the dark coloring became an advantage. The dark colored peppered moths were better adapted due to a change in the _______________________

Answer 2 – 30 Environment (due to pollution)

Question 2 - 40 Birds that have adapted to gather seeds will likely have what type of beak?

Answer 2 – 40 Stronger and wider

Question 2 - 50 Why can only traits controlled by genes be acted upon by natural selection?

Answer 2 – 50 These traits are passed from parents to offspring through their DNA.

Question 3 - 10 Give an example of a population in your neighborhood.

Answer 3 – 10 Answers will vary.

Question 3 - 20 What is a species?

Answer 3 – 20 A group of organisms with shared characteristics that can reproduce with one another

Question 3 - 30 The maximum number of individuals of a species that can be supported by an ecosystem is called the ______________

Answer 3 – 30 Carrying capacity

Question 3 - 40 Name one reason the rabbit population in Florence might have noticeably increased in the last 10 years.

Answer 3 – 40 Decrease in predator population More food available

Answer 3 – 50 The struggle between organisms to survive in a habitat with limited resources is called?

Question 4 - 10 20. Each student at Ockerman is slightly different from others throughout the school. The fact that every member of a species is not the same is representative of which of the following factors? A. Variation B. Selection C. Speciation D. Mutation

Answer 4 – 10 A. Variation

Question 4 - 20 Species understand their environment and have to learn adapt depending on the circumstances presented within their habitat. In the case of the peppered moths, what forced them to adapt to their surroundings. A. New predators moved into their habitat B. Their food supply was changed by overproduction C. Their ability to reproduce changed D. Their habitat was changed by pollution from the surrounding environment

Answer 4 – 20 D. Their habitat was changed by pollution from the surrounding environment

Question 4 - 30 27. What will often happen because of overproduction within a certain species? A. Population will continue to grow exponentially B. The supply of resources will increase C. The environment will have to expand D. Competition will increase amongst species

Answer 4 – 30 D. Competition will increase amongst species

Question 4 - 40 23. Which of the following best describes what the term species refers to? a. A group of closely related organisms b. A group of organisms that share similar characteristics c. A group of organisms that share characteristics and are able to reproduce d. A group of closely related organisms that live in the same ecosystem

Answer 4 – 40 c. A group of organisms that share characteristics and are able to reproduce

Question 4 - 50 What are animals’ similar skeletal structures called

Answer 4 – 50 Homologus structures

Question 5 - 10 Robert crossbreeds 2 plants, one with red flowers and one with white flowers. Weeks later the offspring plants produce red flowers. Robert determines that

Answer 5 – 10 Red is dominant

Question 5 - 20 Huntington disease has a dominant inheritance pattern (DD or Dd). According to the pedigree chart, the genotype of the mother is ______________

Answer 5 – 20 What is Dd?

Question 5 - 30 The parents of a litter of kittens both have a recessive gene. The gene is X-linked, Xc, and is expressed (phenotype) only in the male. The affected male would have the genotype of ________.

Answer 5 – 30 What is XcY?

Question 5 - 40 For a certain flower, red petals are dominant over orange petals. Determine the phenotype of the parent cells if the probability for their offspring are 50% hybrid red and 50% pure orange.

Answer 5 – 40 one orange parent plant and one red (heterozygous) red parent plant

Question 5 - 50 Hemophilia is a sex-linked genetic disorder. If a woman is a carrier of hemophilia (but doesn’t have the disorder) and a man without hemophilia have a child, the probability of them having a girl with hemophilia is _________.

Answer 5 – 50 What is 0%