Physical Science Guided Reading and Review Chapter 10 Section 2 Answers

Affiliate 10 Answer Key

Report Guide

My Notebook

1. Answers will vary, just could include 2 principal ideas from this summary or 1 chief idea from each Reading (2).
2. When answering how a trait could be favorable, the words survive and predator should be included in a sentence. An case is: A favorable trait for a predator would be long claws to help information technology chase and survive.
3. The 4 finch beaks shapes and functions might include: triangular for keen seeds; sharp and narrow for ripping apart leaves; upper beak pointy and longer for probing for tree grubs, hooked beak for pulling apart cones to get seeds inside.

Guided Reading

x.ane Bear witness for Alter

1. survive
2. traits
3. population
4. fossils.
5. remnant

10.2 Natural Selection

6. favorable
7. predators.
8. occur
9. response
10. domestic

Let's Review

1. a
2. a

Check Your Agreement

Reading x.1

1. Adaptations that aid the following organisms survive in their surroundings:
1. Spider: Has the ability to spin a web that traps its prey.
2. Turtle: Has a hard shell that provides protection. When threatened, it draws its head inside the beat out.
3. Crab: Has well-developed appendages with which it burrows itself under the sand.
2. False
3. False
4. c
5. a = three; b = ii; c = i

Reading 10.two

1. b
2. natural selection
3. d
4. a
5. b, d, c, a

Challenge! p. 301

1. A rise or fall in body of water level that isolates a population would qualify as a dramatic ecology event. The change in body of water level could exist caused, for case, by volcanic ash in the atmosphere that impacts the climate.
2. Answers will vary.
3. Gould himself says that punctuated equilibrium does not abnegate Darwin's concept of gradual modify but rather adds the concepts of catastrophism and stasis. It is non an either/or suggestion merely a both/and proposition.

Connection

1. Sickle jail cell anemia is an inherited disease. You tin can only get it from genes passed to you from your parents.
2. 25%
3. The red blood cells go sickle-shaped and they live only x–xx days compared with 120 days for normal cherry blood cells.
4. The malaria parasite infects ruby-red blood cells, causing them become sickle-shaped. The sickle-shaped ruddy claret cells of carriers of the trait resist infection by the parasites.

Activity

Sample pedigree chart:

1. Mother: Ss; Father SS
2. See the nautical chart above
3. Neither parents are carriers, and both have a genotype of SS. They will always accept SS children.
4. Answers volition vary. Students may use the messages C = normal and c = cystic fibrosis. Check to brand certain their charts are correct.

Affiliate 10 Review

Vocabulary

Reading 10.1 mutations homologous structures vertebrates fossils fossil record

Reading 10.2 natural option genetic variation

Concepts

Reading ten.1

1. c
2. d
3. b

Reading 10.2

4. a
5. The mutation in the peel cell would not be passed on to offspring. The mutation in a sperm or egg prison cell would be more probable to exist passed on.
6. Darwin studied the beaks of finches in the Galapagos Island and concluded that these finch beaks were adapted to the type of food they ate. He hypothesized that an ancestral species of finch from the mainland somehow ended up in the Galapagos Islands. The finches of that species scattered to different environments. Over many generations, variations in beaks were selected so that the beak matched the food blazon in each dissimilar environment. Thus, the adaptation allowed them to get enough food to survive and reproduce.
7. d
8. d
9. a
10. Mutations are already present in the gene pool of a population. Changes in the environment can increase a certain mutation in the cistron pool if it is a favorable mutation.
11. Answers volition vary. Example: If a fellow member of a species of frog had a mutation that helped it alloy in better in its environment, it would be less probable to be eaten.
12. The survivors could carry a mutation that helps them survive sudden freezes. The survivors would near likely reproduce and some could laissez passer that mutation on to their offspring.
13. c

Math and Writing Skills

Reading ten.ane

1. In earlier periods of history, people believed fossils were organisms that spontaneously sprouted from the basis only were unable to properly develop and come to the surface. Today scientists view fossils as remnants of organisms from the past, such as a skeleton or a leafage banner. Older fossils are found buried beneath newer ones. Therefore, fossil records include a historical sequence of life on World based on the sequence of fossils. Through analyzing all sides of this data, scientists have been able to piece together, over very long periods of fourth dimension, the lodge in which evolutionary changes occurred.

Reading 10.2

2. Student stories will vary. Stories should reflect the information in the chapter.

Test Practice

1. d
2. b
3. a

Chapter Project

Student products will vary. Students may do a keyword search for the U.South. Fish and Wildlife Service which provides a current list of endangered species.

The poster should meet the post-obit criteria:

1. Contains the common and scientific proper noun.
2. Contains interesting facts near the species.
3. Shows a map with current locations marked.
4. Contains a list of of import things being washed to protect the species.
5. Poster is creative, neat, and interesting.

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