Guided Reading Activity Chapter 15 Lesson 1 Answers

Chapter 15 Answer Key

Study Guide

My Notebook

1. Answers will vary, only could include main ideas from the summary or i primary thought from each Reading (two).
2. Students should accept a drawing of a land based ecosystem with living organisms and natural or artificial objects such equally the sun, clouds, dirt, rocks, water, litter, buildings, roads, etc.
3. (a) Figure 15.9 on p 419 shows an aquatic ecosystem. (b) Student answers volition vary but could explain that the figure championship "Marine food web" is the same as saying "common salt water food spider web" or observe that organisms pictured in the figure live in h2o such equally red drum, dolphin, and grass shrimp.

Guided Reading

15.ane Terrestrial Ecosystems

1. ecosystem
2. land
3. Organisms
4. producer
5. consumer

15.two Aquatic Ecosystems

6. water
7. salt
8. marine
9. terrestrial
10. runoff

Permit'southward Review

1. a
2. a

Check Your Understanding

Reading 15.ane

1. a
2. Answers may vary. Ex: A prairie nutrient concatenation may begin with a producer such as a grass. A prairie canis familiaris is a chief consumer for the grass. The prairie canis familiaris may then provide prey for a coyote. The coyote is host to fleas, which are parasites.
3. Truthful or false: an ecosystem is a grouping of organisms interacting with one another and their concrete environment.
4. Answers may vary. Ex: A parasite lives on a host. The host provides the parasite with things like energy and shelter. The parasite does not do good the host and may in fact harm the host.
5. Answers may vary. A prairie dog is a primary consumer when it eats plants. The prairie dog is likewise prey for animals such equally coyotes. The prairie dog is a host for fleas.
6. Answers will vary. The food web should show the deer and mouse feeding on grass, the finch and squirrel feeding on the pine tree, the owl feeding on the squirrel, finch, and mouse, and the mount lion feeding on the squirrel, deer, and mouse. Arrows should exist drawn from the food source, to the organism that eats information technology to show energy transfer.

Reading fifteen.two

1. B) Consumers
2. C) Freshwater ecosystems are very wet while terrestrial ecosystems are typically drier.
3. D) Marine ecosystems include oceans.
4. C) Frogs are amphibious.
5. A) Phytoplankton are producers in marine ecosystems.
6. Runoff can carry with information technology chemicals such as phosphates that act equally fertilizers. This tin can cause algal blooms. When algae plants dice, decomposers intermission them down and utilise oxygen in the water in the process, thus lowering levels of dissolved oxygen. Many organisms such as fish require high levels of dissolved oxygen in order to survive. Algal blooms lower water quality and can change marine food webs since many organisms will die or go out the area when oxygen levels go too depression to support them.

Connectedness: Undersea Artillery Race

1. Dr. Vermeij was investigating the question Are some variations in shells linked to the unlike predators faced past snails in unlike areas?
2. Answers may vary. Sample answer: Boundless marvel—Dr. Vermeij has nerveless shells since he was a pocket-sized child. At present he is considered one of the world'southward leading experts in mollusks! A willingness to take a chance beingness wrong—since childhood, he had disliked scarred shells, until he realized that these scars were not but flaws simply evidence of stiff defensive features. The scarred shells became vital to his research. A passion for doing hard work—Dr. Vermeij's inquiry includes species drove, conscientious, time-consuming ascertainment, precise record-keeping, and writing articles to share his work.
3. Dr. Vermeij learned to run across the scars as sites of unsuccessful predator attacks. When predators fail, the snail'due south defensive traits can be passed downwardly to the adjacent generation. The scars provided key prove of the evolution of defensive traits.

Chapter Activity: Terrestrial Nutrient Webs

Part i: A stable population

Sample Data

Producers (Little Bluestem Grass)		i	2	3	four	v	six	7	8	nine	x
1-3	population increase, +1		two	i	2		2	3	3
four-vi	population decrease, -i					5				4	4
Population		ten	11	12	13	12	13	14	15	14	13
Consumer and Prey (Prairie Dog)		ane	ii	iii	4	5	half dozen	seven	8	9	10
one-iii	population increase, +1		2		2	2					ane
4-6	population subtract, -1			half-dozen			half dozen	six	six	5
Population		ten	xi	10	11	12	11	10	9	8	9
Predators (Coyote)		ane	2	iii	4	5	vi	7	8	ix	x
1-three	population increment, +one		3			1	three		2	3
iv-6	population decrease, -one			5	half-dozen			four			4
Population		10	eleven	10	9	10	11	10	eleven	12	11
Parasites (Flea)		one	two	3	4	5	vi	7	8	9	ten
i-3	population increase, +i			3				1		ii
4-6	population decrease, -1		half-dozen		4	v	iv		6		4
Population		ten	9	10	9	8	7	8	vii	8	7

Part 1: Questions

1. Answers may vary. The gain of 3 in the producer population.
2. Answers may vary. The prairie domestic dog and predator populations were very shut to their starting levels.
3. Answers may vary. The population of each group will get upwardly and downwards, but remain inside a range of v individuals of the starting population.

Function 2: Likewise many parasites!

Sample Data

Producers (Footling Bluestem Grass)		one	ii	3	four	5	6	7	viii	9	ten
1-4	population increase, +one		1	1	3	3	one	2	iv	1	1
5-6	population decrease, -ane
Population		10	11	12	thirteen	14	xv	16	17	18	19
Consumer and Prey (Prairie Dog)		1	2	iii	4	5	6	7	viii	9	10
1-ii	population increase, +i								2
3-6	population decrease, -one		vi	five	4	three	3	three		6	4
Population		ten	ix	eight	7	6	5	4	five	four	3
Predators (Coyote)		1	2	iii	4	5	half dozen	7	8	9	ten
ane-2	population increase, +one		2		ii				1
three-6	population decrease, -ane			five		4	4	4		4	half-dozen
Population		10	eleven	10	xi	10	9	8	9	8	7
Parasites (Flea)		1	2	3	4	v	half-dozen	vii	eight	9	10
i-4	population increment, +1		four				3	three	1	3	2
v-half dozen	population decrease, -1			6	6	5
Population		10	11	ten	9	8	ix	10	11	12	13

Part ii Questions

1. Answers may vary. The population of producers is increasing. The other populations are decreasing.
2. Answers may vary. Since the population of prairie dogs is decreasing it is probable that the fleas are weakening the population. This may make the prairie dogs easier to catch. Some other possibility is that the prairie dogs are unable to reproduce successfully because of their weakness.

Affiliate fifteen Review

Vocabulary

Reading xv.1

1. Terrestrial ecosystem
2. Principal Consumer
3. Casualty
4. Producer
5. Parasites
6. Predator

Reading 15.2

7. Host
8. Marine ecosystems
9. Freshwater ecosystems

Concepts

Readings 15.i

1. Primary consumers feed on producers.
2. Fish lice are considered parasites within the marine ecosystem. They live on and within their host fish, and obtain energy past consuming blood.
3. A prairie canis familiaris is a primary consumer of grasses and casualty for coyotes.
4. Producers are institute at the bottom of a food web.
5. Nutrient web

Reading xv.two

6. Freshwater ecosystems generally occupy less space and practise not incorporate saltwater.
7. In the pond ecosystem algae are producers. If algae receive less sunlight so they would be less likely to abound. A decrease in the producers in the pond ecosystem would probable lead to a decrease in predators like bass.

Math and Writing Skills

1. Organize the post-obit creatures in a food web:

Dolphin Ruby drum Seaweed

Fish lice Oyster Blue crab

Seagrass

Sample nutrient web:

Test Do

1. False. A frog may be a predator or prey in a freshwater ecosystem. Frogs are non parasites just could be hosts.
2. C
3. D
4. D

Affiliate Project

Sample rubric

Marine, freshwater, or terrestrial ecosystem	Does not see expectations	Meets expectations	Exceeds expectations
Organisms	3 or more than of the "meets" criteria are missing or inaccurate	Identifies at least 5 organisms in an ecosystem Identifies the ways each organism gets energy, the amount of space each organism needs Describes the adaptations/appearance of each organism	Includes all "meets" criteria AND describes at to the lowest degree 3 additional organisms in the ecosystem for a total of viii
Food webs	2 or more of the "meets" criteria are missing or inaccurate	Identifies producers and consumers, predators and prey, parasites and hosts Food web uses arrows to testify the flow of energy in an ecosystem	Identifies producers and consumers, predators and prey, parasites and hosts Food web uses arrows to evidence the flow of energy in an ecosystem

smithsawas1997.blogspot.com

Source: https://curiosityplace.schoolspecialty.com/delegate/ssi-wdf-ucm-webContent/Contribution%20Folders/CPO/HTML_TG/tx8/lessons/TX8_TG_15_AK.html