FOOD WEB ANALYSIS ACTIVITY ACTIVITY INSTRUCTIONS In this

FOOD WEB ANALYSIS ACTIVITY ACTIVITY INSTRUCTIONS In this

FOOD WEB ANALYSIS ACTIVITY ACTIVITY INSTRUCTIONS In this activity, you will need the following: 1) The Food Web Analysis Worksheet. 2) Pencil. 3) Pencil crayons or colored pencils. 4) Eraser. ACTIVITY OBJECTIVES In this activity, you will learn the following: 1) How to count the number of food chains in a food web. 2) How to determine how many food chains an organism belongs to in a food web. 3) How to identify and count the following organisms in the food web: herbivores, omnivores, carnivores, top carnivores, primary consumers, secondary consumers, tertiary consumers and quaternary consumers. 4) How to identify and count organisms that have more than one role in the food web. E.g. organisms that are both primary and secondary consumers. 5) How to determine the effect an organism would have on other members of the food web if it were to go extinct.

FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote snake mouse grasses Food Web #1 How many food chains are in this simple food web? FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk

coyote snake 1 mouse grasses Food Web #1 How many food chains are in this simple food web? FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote snake 2 mouse

grasses Food Web #1 How many food chains are in this simple food web? FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote snake 3 mouse How many food chains are in this simple food web? Try the next one on your own.

grasses Food Web #1 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote snake frog mouse grass hopper grasses aquatic plants Food Web #2 Difficulty: Easy Count how many food chains there are in total in this food web.

FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote snake 1 frog mouse grass hopper grasses aquatic plants Food Web #2 Difficulty: Easy Count how many food chains there are in total in this food web.

FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote snake 2 frog mouse grass hopper grasses aquatic plants Food Web #2 Difficulty: Easy Count how many food chains there are in total in this food web.

FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote snake 3 frog mouse grass hopper grasses aquatic plants Food Web #2 Difficulty: Easy Count how many food chains there are in total in this food web.

FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote snake 4 frog mouse grass hopper grasses aquatic plants Food Web #2 Difficulty: Easy Count how many food chains there are in total in this food web.

FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote snake 5 frog mouse grass hopper grasses aquatic plants Food Web #2 Difficulty: Easy Count how many food chains there are in total in this food web. Try the next one

on your own. FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote Count how many food chains there snake are in total in this food web. frog dragonfly mouse Difficulty: Medium butterfly grass hopper grasses aquatic plants Food Web #3

FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote Count how many food chains there snake are in total in this food web. frog dragonfly mouse Difficulty: Medium 1 butterfly grass hopper grasses aquatic plants Food Web #3

FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote Count how many food chains there snake are in total in this food web. frog dragonfly mouse Difficulty: Medium 2 butterfly grass hopper grasses aquatic plants

Food Web #3 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote Count how many food chains there snake are in total in this food web. frog dragonfly mouse Difficulty: Medium 3 butterfly grass hopper grasses aquatic

plants Food Web #3 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote Count how many food chains there snake are in total in this food web. frog dragonfly mouse Difficulty: Medium 4 butterfly grass hopper

grasses aquatic plants Food Web #3 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote Count how many food chains there snake are in total in this food web. frog dragonfly mouse Difficulty: Medium 5 butterfly grass

hopper grasses aquatic plants Food Web #3 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote Count how many food chains there snake are in total in this food web. frog dragonfly mouse Difficulty: Medium 6 butterfly

grass hopper grasses aquatic plants Food Web #3 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote Count how many food chains there snake are in total in this food web. frog dragonfly mouse Difficulty: Medium 7

butterfly grass hopper grasses aquatic plants Food Web #3 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk coyote Count how many food chains there snake are in total in this food web. frog dragonfly mouse Difficulty: Medium 8

butterfly grass hopper grasses aquatic plants Food Web #3 Try the next one on your own. FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake frog dragonfly bird mouse

butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake

1 frog dragonfly bird mouse butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________

food chains __________. hawk Difficulty: Hard coyote snake 2 frog dragonfly bird mouse butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web.

plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 3 frog dragonfly bird mouse butterfly grass hopper

housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 4 frog dragonfly

bird mouse butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard

coyote snake 5 frog dragonfly bird mouse butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4

FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 6 frog dragonfly bird mouse butterfly butterfly grass hopper housefly Count how many food chains there

are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 7 frog dragonfly bird mouse

butterfly butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake

8 frog dragonfly bird mouse butterfly butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected

Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 9 frog dragonfly bird mouse butterfly butterfly grass hopper housefly Count how many food chains there are in total in this

grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 10 frog dragonfly bird mouse butterfly

butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 11

frog dragonfly bird mouse butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains

__________. hawk Difficulty: Hard coyote snake 12 frog dragonfly bird mouse butterfly butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web.

plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 13 frog dragonfly bird mouse butterfly butterfly grass

hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 14 frog

dragonfly bird mouse butterfly butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________.

hawk Difficulty: Hard coyote snake 15 frog dragonfly bird mouse butterfly butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants

plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 16 frog dragonfly bird mouse butterfly butterfly grass hopper

housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard coyote snake 17 frog dragonfly

bird mouse butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4 FOOD WEBS interconnected Food Web: A food web is made up of a group of _____________ food chains __________. hawk Difficulty: Hard

coyote snake 18 frog dragonfly bird mouse butterfly grass hopper housefly Count how many food chains there are in total in this grasses aquatic terrestrial food web. plants plants Food Web #4

EXAMPLES OF FOOD WEBS EXAMPLES OF FOOD WEBS EXAMPLES OF FOOD WEBS ANALYZING A FOOD WEB a) How many 55 herbivores are there? b) How many omnivores are there? 00 ANALYZING A FOOD WEB a) How many 55

herbivores are there? b) How many omnivores are there? c) How many carnivores are there? 00 77 ANALYZING A FOOD WEB a) How many 55 herbivores are there? b) How many omnivores are there?

c) How many carnivores are there? d) How many top carnivores are there? 00 77 33 ANALYZING A FOOD WEB a) How many 55 herbivores are there? b) How many omnivores are there? c) How many

carnivores are there? d) How many top carnivores are there? 00 77 33 e) How many food chains are the toads connected to? 11 ANALYZING A FOOD WEB a) How many 55 herbivores are there? b) How many

omnivores are there? c) How many carnivores are there? d) How many top carnivores are there? f) How many food chains are the mice connected to? 33 00 77 33 e) How many food chains are the toads connected to? 11 ANALYZING A FOOD WEB

a) How many 55 herbivores are there? b) How many omnivores are there? c) How many carnivores are there? d) How many top carnivores are there? f) How many food chains are the mice connected to? 33 g) How many food chains are the spiders connected to? 00

77 33 e) How many food chains are the toads connected to? 11 66 ANALYZING A FOOD WEB a) How many 55 herbivores are there? b) How many omnivores are there? c) How many carnivores are

there? d) How many top carnivores are there? f) How many food chains are the mice connected to? 33 g) How many food chains are the spiders connected to? 88 h) How many food chains are the foxes connected to? 00 77 33 e) How many food chains are the toads connected to? 11

66 ANALYZING A FOOD WEB i) How many 55 primary consumers are there? ANALYZING A FOOD WEB i) How many 55 primary consumers are there? j) How many 66 secondary consumers are there?

ANALYZING A FOOD WEB i) How many 55 primary consumers are there? j) How many 66 secondary consumers are there? k) How many 66 tertiary consumers are there? ANALYZING A FOOD WEB i) How many 55

primary consumers are there? j) How many 66 secondary consumers are there? k) How many 66 tertiary consumers are there? l) How many 4 4 quaternary consumers are there? Organisms in a food web can be one level of consumer

in one food chain, but another level of consumer in another food chain in the same food web. ANALYZING A FOOD WEB i) How many 55 primary consumers are there? j) How many 66 secondary consumers are there? k) How many 66 tertiary consumers are there? l) How many

4 4 quaternary consumers are there? m) Which organisms are both primary and secondary consumers? none none ANALYZING A FOOD WEB i) How many 55 primary consumers are there? j) How many 66 secondary consumers are there?

k) How many 66 tertiary consumers are there? l) How many 4 4 quaternary consumers are there? m) Which organisms are both primary and secondary consumers? n) Which organisms are both secondary and tertiary consumers? none none spiders, insectivorous birds, snakes, foxes, hawks & owls spiders, insectivorous birds, snakes, foxes, hawks & owls ANALYZING A FOOD WEB o) Which organisms

are both secondary and quaternary consumers? foxes, hawks & foxes, hawks & owls, snakes, owls, snakes, insectivorous insectivorous birds birds ANALYZING A FOOD WEB o) Which organisms are both secondary and quaternary consumers? foxes, hawks & foxes, hawks & owls, snakes, owls, snakes, insectivorous insectivorous

birds birds p) Which organisms are both tertiary and quaternary consumers? snakes, snakes, insectivorous insectivorous birds birds ANALYZING A FOOD WEB Since organisms are interconnected in an ecosystem, if one type of organism goes extinct, then this has effects on the other organisms in the food web. ANALYZING A FOOD WEB q) If the plants were to go extinct, explain the effect

this would have on the primary consumers and the consumers above them. If the plants go extinct, If the plants go extinct, this would deprive the this would deprive the primary consumers of primary consumers of food and they will food and they will decrease in numbers. decrease in numbers. This causes the This causes the secondary consumers to secondary consumers to also decline because also decline because their food source is their food source is decreasing. This

decreasing. This pattern moves up the pattern moves up the entire food chain. entire food chain. ANALYZING A FOOD WEB r) If the rabbits were to go extinct, explain the effect this would have on the foxes and squirrels. If the rabbits go extinct, If the rabbits go extinct, the foxes lose a food the foxes lose a food source, and they will source, and they will consume more of their consume more of their other food sources. other food sources. Since the squirrels are

Since the squirrels are one of the foxes other one of the foxes other food sources, the food sources, the squirrels will get eaten squirrels will get eaten more and their numbers more and their numbers will decrease. will decrease. ANALYZING A FOOD WEB s) If the hawks and owls were to go extinct, explain the effect this would have on the foxes, squirrels and plants. If the hawks and owls go extinct, the If the hawks and owls go extinct, the foxes will have less competition for prey foxes will have less competition for prey and their numbers will increase. The

and their numbers will increase. The consumers no longer preyed upon by consumers no longer preyed upon by the hawks and owls, like the squirrels, the hawks and owls, like the squirrels, will increase in numbers and will increase in numbers and overpopulate. This will cause the overpopulate. This will cause the primary consumers among them to eat primary consumers among them to eat too many of the plants which will cause too many of the plants which will cause them to decline. The loss of the them to decline. The loss of the producers signal trouble for the entire producers signal trouble for the entire food web. food web. ANALYZING A FOOD WEB t) If the insectivorous birds were to go extinct, explain the

effect this would have on the spiders and the toads. If the insectivorous If the insectivorous birds go extinct, this birds go extinct, this causes the spiders to causes the spiders to overpopulate because overpopulate because these birds are the these birds are the spiders only predators. spiders only predators. More spiders will More spiders will then prey on the then prey on the predaceous insects predaceous insects which will decrease which will decrease their numbers. Since their numbers. Since

the toads only food the toads only food source are the source are the predaceous insects, the predaceous insects, the toads numbers will toads numbers will also decline. also decline. The End! Created by Anh-Thi Tang Tangstar Science Copyright August 2014 Anh-Thi Tang (a.k.a. Tangstar Science) All rights reserved by author. This document is for personal classroom use only. This entire document, or any parts within, may not be electronically distributed or posted to any website including teacher or classroom blogs or websites. http://www.teacherspayteachers.com/Store/Tangstar-Science

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