Science Q4 Module 4

Republic of the Philippines
Department of Education
SCHOOLS DIVISION OF ORIENTAL MINDORO
SCIENCE
8 Quarter IV – Module 4
Week 4
1
Name:_________________ Date:______________
Grade & Section: _______ Score:___________
Science 8
Fourth Quarter
Week 4
Lesson: Hierarchical Taxonomic System of Classification

MELCs: Explain the concept of a species.
Classify organisms using the hierarchical
taxonomic system.
Biological diversity has led to varieties of organisms on earth. This called

for classification to identify common ancestry of organisms. Long ago, people
grew up in the notion that there are two major groups of organisms on the planet-
plants and animals. Aristotle, a noted Greek philosopher, once made a
classification scheme for organisms which was recognized by the ancient world.
He grouped animals based on habitat or places where they live. Likewise, he also
introduced a classification scheme for plants as to trees, shrubs, vines and herbs.
By 18th century, Carolus Linnaeus, a Swedish naturalist presented a more
detailed classification scheme for living things in his publication entitled Systema
Naturae. He was able to develop the field of taxonomy- a branch of biology thst
deals with naming and classification of living things. Linnaeus also devised a
naming procedure for living things. He used a two-word naming system known as
binomial nomenclature. This is presently known as scientific name which is
composed of two Latin words pertaining to the characteristics of the organism.
Linnaeus used Latin language since this language does not easily change
compared to other languages. When translated to other language, scientific
names depict the characteristics of the organism.
Through the development of the Linnaean system of classification,
taxonomists are able to devise the eight levels of classification. These include the
domain, kingdom, phylum or division (for plants), class, order, family, genus and
species.
The domain category is the largest category into which organisms have
been classified. This is followed by the kingdom category subdivided into various
phyla (sing. Phylum). A phylum consists of different classes, each class with
several orders, an order with different families. Families consist of several genera
(sing. Genus) and each genus comprise the smallest group of various species.
A species is a group of similar organisms and capable of reproducing their
own kind. This means only members of the same species can mate and produce
fertile offspring. The dog, waling- waling (an orchid), milkfish (local name,
bangus), rice plant and humans like you are examples of a species.
2
Key Concept:
The following table shows a simplified classification

scheme under the six-kingdom scheme.
3
Activity 1:
Directions: After reading the key concept, answer the
following questions thoroughly and completely.
1. Explain why scientist classify organisms.
Answer:____________________________________
2. Who was Carolus Linnaeus and explain what his
contribution to modern science was?
Answer:____________________________________
3. What is important about the genus and species
name of an organism?
Answer:____________________________________
4. How is scientific name for an organism correctly
written? Why are these names in Latin?
Answer:____________________________________
5. List the eight levels of classification system starting
with the broadest and going to the narrowest.
Answer:__________________________________
Table 1. Domestica Dog Bangus Wolf Lion
Sample ted Cat
classification
of organisms
Category
Kingdom Animalia Animalia Animalia Animalia Animalia
Phylum Chordata Chordata Chordata Chordata Chordata
Class Mammalia Mammalia Actinopterygii Mammalia Mammalia
Order Carnivora Carnivora Gonorynchiform Carnivora Carnivora
is
Family Felidae Canidae Chanidae Canidae Felidae
Genus Felis Canis Chanos Canis Panthera
Species Felis catus Canis Chanos chanos Canis Panthera
familiaris lupus leo
4
Activity 2:
Directions: Analyze the table below on how the
organisms are classified. Answer the questions
that follow.
Guide Questions:
1. Which organisms are similar up to the Order
category?
Answer:
_____________________________________________
2. Which organisms are most closely related? Why do
you say so?
Answer:
_____________________________________________
3. Can a dog and a wolf produce fertile offspring?
Explain your answer.
Answer:
______________________________________________
4. Examine the row for species. What have you
noticed?
Answer:
______________________________________________
5. What does the first one refer to in the table? What
about the second name?
Answer:
______________________________________________
5
Activity 3
Directions: Use the internet to classify these living
things using the Linnaean system.
1.
Living human Living Narra
Thing Thing
Domain Domain
Kingdom Kingdom
Phylum Phylum
Class Class
Order Order
Family Family
Genus Genus
Species Species
Living Philippine
Thing Eagle
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
6
Guide Question:
1. What is the importance of classifying organisms?
Answer:
__________________________________________
Activity 4
Directions: Make mnemonics about the classification
of living things.
Kingdom K
Phylum P
Class C
Order O
Family F
Genus G
Species S
7
References
Books
Albarico, Joni M. Worktext in Integrative Science
- Biology. Lipa City, Batangas, Philippines: United Eferza
Academic Publications, Co., 2010
Campo, Pia C, et. Al. Science - Grade 8 Learner’s
Material. First ed. Pasig, Philippines:
Department of Education, 2013
Electronic Resources
Kingdom and Domain Characteristics
https://en.m.wikiversity.org/wiki/General_Classificatio
n
Prepared by:
RIZEL M. GARCIA
Teacher II
Kaligtasan NHS
8

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Republic of the Philippines

Lesson: Hierarchical Taxonomic System of Classification

Biological diversity has led to varieties of organisms on earth. This called

The following table shows a simplified classification

1. Explain why scientist classify organisms.

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