Prepared by:

KRISTINE JOAN DA. BARREDO

Teacher II

STRATEGIC INTERVENTION

MATERIALECOLOGICAL

RELATIONSHIPS

Learning Area Elementary Science

Level Grade 6, Intermediate

Learning Objectives Identify the kinds of relationship among living

organisms

Expected Outcomes * Classify the kind of relationship exists.

* Identify the relationship among living things based

on the given situation.

Science Process Skills observing, communicating, inferring, identifying

Keywords parasite, consumers, host. Predator, prey, mutualism,

commensalism, predation, parasitism

Author Kristine Joan DA. Barredo, Teacher II,

Tunasan Elementary School

Date June, 2011

Symbiosis- A close relationship between two organisms where at least one organism benefits.

Types of symbiotic relationships◦ Mutualism (both benefit)

◦ Commensalism (one benefits and one not affected

◦ Parasitism (one benefits and one is harmed)

GUIDE CARD

Mutualism occurs when species interact in a mutually

beneficial manner.

The oxpecker gets food (ticks and insects disturbed in the grass) and a safe haven

from the rhinoceros, and the rhinoceros has parasites (ticks) removed.

GUIDE CARD

Example of mutualism: cleaner shrimp and a grouper fish

Cleaner shrimp picks off parasites from the grouper’s mouth and

gills. Both benefit.

GUIDE CARD

Mutualism

Mycorrhizal fungi (threads) covering aspen roots: fungi aid in water

and nutrient absorption by the aspen and the aspen provides sugars

and other food molecules to the fungi.

GUIDE CARD

The remora attaches to a shark and rides to where the

shark makes a kill. The remora eats the left over

scraps of meat.

GUIDE CARD

Commensalism: Barnacles and Grey Whales

Barnacles attach to the head of the whale and feed on plankton

where ever the whale swims. The barnacles don’t harm the

whale.

GUIDE CARD

Vampire bats feed on the blood of

mammals without killing their host.

GUIDE CARD

Parasites feed off other organisms called “hosts”.

Parasites usually don’t kill their host.

GUIDE CARD

Ectoparasites- Live outside the host◦ Example: ticks and humans

GUIDE CARD

Head louseMite

bedbug

GUIDE CARD

Live within the host ◦ Example: guinea worms

GUIDE CARD

Tapeworm

Hookworm

Roundworm

GUIDE CARD

•ecological relationships in which

one organism (population, species)

benefits and the other is harmed

GUIDE CARD

A predator is an animal that hunts

other animals for food. The animals

that are eaten are the prey.

Classify the following pictures as to what type of

interrelationship exist among living things.

◦Write PREDATION, MUTUALISM, COMMENSALISM, or PARASITISM

In your worksheet.

ACTIVITY CARD #1

ACTIVITY CARD #1

ACTIVITY CARD #1

ACTIVITY CARD #1

ACTIVITY CARD #1

_____1. Eagles build their nests on treetops. The eagle are protected by the thick foliage. The trees are not harmed or benefited by the eagles.

_____2. Many other birds find food and shelter in the trees in the forests. The birds help disperse the seeds of the seeds.

_____3. Monkeys climb or swing among the branches of trees. The trees provide shelter to the monkeys. Hunters have a difficult time catching them.

_____4. Bacteria and fungi feed on dead plants and animals. They break the dead organisms into simple nutrients the plants can use.

_____5. Cats are hunting mice in the corners of the house.

ACTIVITY CARD #2

Analyze the following pictures. Identify what ecological relationship

exists in the living organisms.

ASSESSMENT CARD

#1

Mutualism

ASSESSMENT CARD

Predation

ASSESSMENT CARD

Commensalism

ASSESSMENT CARD

parasitism

ASSESSMENT CARD

Mutualism

ASSESSMENT CARD

Choose the letter of the correct answerRead the questions carefully then choose the best

answer on the choices given below.

a. commensalism

b. mutualism

c. parasitism

d. predation

ASSESSMENT CARD

a. Aphids produce honeydew needed by ants. In return, ants protect aphids from other insects.

b. The ants eat the aphids.

c. The aphids produces honeydew but the ants do not give any help nor harm the aphids.

d. The aphids live on the ants habitat.

ASSESSMENT CARD

a. Mutualism mean that both members of a species benefit from living together. Parasitism means that one member of a species benefits without harming or benefiting the member of another species.

b. Mutualism means that one member of a species benefits without harming or benefiting the member of another species. Parasitism means that both species' members benefit from the relationship.

c. Mutualism means that one member of a species thrives at the expense of the member of the species. Parasitism means that one member of a species thrives at the expense of the member of the species.

d. Mutualism means both members of a species benefit from living together. Parasitism means that one member of a species thrives at the expense of the member of the species.

ASSESSMENT CARD

a. host

b. parasites

c. predator

d. prey

ASSESSMENT CARD

a. commensalism

b. mutualism

c. parasitism

d. predation

ASSESSMENT CARD

B

A

D

B

A

We Are Not Immune!

When it rains, most of the chemicals sprayed onto crops get washed into rivers, and eventually the sea.

Click to move on

Once a poisonous chemical is in the food chain, there is a good chance that humans will be affected.

ENRICHMENT

CARD

As a student, how will you decrease the harmful contaminants in the environment?

X

ENRICHMENT

CARD

Jovero, Natividad V. (2009) Developing Science Power, St. Mary’s Publishing Corporation, Manila p. 35

http://www.matchware.com/en/products/mindview/education/Examples/Ecological%20Relationships.htm