1. The document discusses the theories of evolution proposed by Jean-Baptiste Lamarck and Charles Darwin. 2. Lamarck believed that evolution occurred through the inheritance of acquired characteristics, where traits developed during an organism's lifetime could be passed on to offspring. He also proposed the theory of use and disuse. 3. Darwin's theory of evolution by natural selection proposed that variations exist between individuals of the same species, and individuals with traits better suited to the environment are more likely to survive and pass on those traits to offspring.

1. 1
Q3 Week No. 6 Competency Code: S10LT-111g-40
Competency: Explain the occurrence of evolution
PROJECT CLAID (Contextualized and Localized Activities Intended for Distance Learning)
Name : ___________________Date: ____________Score:__________
SCIENCE 10
Quarter 3 – Week 6
Competency:
Explain the occurrence of evolution (S10LT-111G-40)
Lesson: LAMARCK AND DARWIN’S THEORIES OF EVOLUTION
Objective/s:
1.Explain the occurrence of evolution according to Lamarck’s ideas.
2.Explain the occurrence of evolution according to Darwin’s ideas.
3.Explain the occurrence of evolution by comparing the ideas of Lamarck and
Darwin.
Key Concept:
Jean-Baptiste Lamarck (1744-1829)
Lamarck was a French biologist who is best known for
his Theory of Inheritance of Acquired Characteristics,
first presented in 1801.
He believed that evolution was the “acquired traits” of a
species that is inherited by its offspring. His theory was
that if an organism continually used a structure to carry
out a certain task, the structure used would become
physically modified overtime to make the task easier.
This modified structure would then be passed on to any
offspring. For example, if a short-nosed elephant was continually stretching

2. 2
Q3 Week No. 6 Competency Code: S10LT-111g-40
Competency: Explain the occurrence of evolution
out its trunk to try to reach the leaves high up in trees, it’s trunk would stretch and become
longer over time, and any babies that it had would be born with longer trunks.
Lamarck also believed that when body parts were not being used, such as the
human appendix, they gradually disappear (Theory of Use and Disuse). Eventually, people
will be born without these parts. Lamarck believed that evolution happens according to a
prearranged plan and that the results have already been decided.
Directions: Read the passages from the text and answer the questions that follow.
Guide Questions:
1.Who is Jean-Baptiste Lamarck?
___________________________________________________________________________
2. Explain Lamarck’s Theory of Inheritance of acquired characteristics.
___________________________________________________________________________
3. What term did Lamarck use to explain how new species emerged?
___________________________________________________________________________
4. Explain the concept of use and disuse.
___________________________________________________________________________
5.Give an example about the theory of use and disuse.
___________________________________________________________________________
ACTIVITY NO.1

3. 3
Q3 Week No. 6 Competency Code: S10LT-111g-40
Competency: Explain the occurrence of evolution
Key Concept:
Charles Darwin (1809 -1882)
Charles Darwin is famous for the theory of evolution
and Natural Selection, or ‘Survival of the Fittest’.
He dedicated his life to studying plants and animals
and believed that the desires of animals have nothing
to do with how they evolve. He said that organisms,
even of the same species, are different in some ways,
and over time those creatures which are adaptable, survive, while those that do not adapt to
changing conditions, such as climatic and environmental change, do not live to breed and
pass on their genes. He concluded that there was a variation of physical and behavioral
features within a species. Organisms that had features that helped them to adapt to their
environment and circumstances had a better chance of survival than individuals who lacked
these features. These adaptable organisms survived to breed and produce offspring which
generally inherited the ‘successful’ features of their parents. He called this process ‘natural
selection’. Darwin knew that organisms evolved and changed from generation to generation,
but did not know how traits were passed on from one generation to another. The only after
more was understood about genetics, was this explained. Darwin also suggested that each
species evolves overtime over time and adapts to the environment in which they live. Thus,
the same species living in different environments will evolve differently and become more
and more differentiated (different) over time. He believed that all species of life on Earth
are
interrelated and have a common ancestor.
Directions: Read the passages from the text and answer the questions that follow.
ACTIVITY NO.2

4. 4
Q3 Week No. 6 Competency Code: S10LT-111g-40
Competency: Explain the occurrence of evolution
Guide questions:
1.Who is Charles Darwin?
___________________________________________________________________________
2.What is meant by natural selection?
___________________________________________________________________________
3.Is natural selection a fact or a theory? Explain your answer.
___________________________________________________________________________
4.What branch of science has been developed to support Darwin’s Theory?
___________________________________________________________________________
5.Give an example of natural selection.
Direction:
The following statements describe the theories of the evolution of Darwin and Lamarck . Identify if
the statement or theory pertains to Darwin or Lamarck’s by checking the right column.
Topic Lamarck Darwin
1. Organisms changed because they wanted to
survive.
2. There was variation in the population.
3. Certain traits helped organisms survive and
reproduce better than other organisms without
those traits.
4. Organisms can never become extinct.
5. Parents are only able to pass on traits that they
were born with.
ACTIVITY NO.3A

5. 5
Q3 Week No. 6 Competency Code: S10LT-111g-40
Competency: Explain the occurrence of evolution
6. Organisms could decide to change something
about their body and pass on that change to
their offspring.
7. Theory of natural selection.
8. Theory of Use and Disuse.
9. His theory was that if an organism continually
used a structure to carry
out a certain task, the structure used would
become physically modified overtime to
make the task easier.
10. He dedicated his life to studying plants and
animals and believed that the desires of
animals have nothing to do with how they
evolve.
Directions: B.Write true if the statement is true or false if the statement is false.
_____ 1. Artificial selection occurs when nature selects for beneficial traits.
_____ 2. Lamarck was one of the first scientists to propose that species evolve by natural
selection.
_____ 3. Lamarck’s inheritance of acquired characteristics is has become a widely accepted
scientific theory.
_____ 4. Fossils proved to Darwin that species can evolve.
_____ 5. The term fitness refers to an organism’s ability to outrun its hunters.
_____ 6. According to Darwin, natural selection is what occurs, and evolution is how it
happens.
_____ 7. During Darwin’s journey aboard the Beagle, Darwin found fossils from the seas in
the mountains.
______8.Lamarck developed the idea known as the inheritance of acquired characteristics.
_____ 9. Darwin stated that species change over time.
ACTIVITY NO.3B

6. 6
Q3 Week No. 6 Competency Code: S10LT-111g-40
Competency: Explain the occurrence of evolution
______10. Lamarck also believed that when body parts were not being used, such as the
human appendix, they gradually disappear.
REFERENCES:
Chapter 10 The theory of evolution worksheets.Retrieved December 15, 2020 from
www.ck12.org
Worksheet:Lamarck versus Darwin’s Evolution Theory. Retrieved December 15,
2020 from www.cpb-use1.wpmucdn.com
Charles Darwin.Wikipedia.com. Retrieved December 15, 2020 from
www.en.m.wikipedia.org
Lamarckism I Facts, Theory, & contrast with Darwinism (11 Oct 2017). Retrieved
December 15, 2020 from www.britannia.com
Activity Sheet 1: Compare the theories Teacher Key. Retrieved December 15, 2020
from www.southshoreinternational.org
Prepared by:
Harvey Wayne M. Atanante
Editors:
_Dr. Marlowe Louis F. Fabunan Dr. Marlowe Louis F. Fabunan Maribel D. Ganeb
Content Language Layout
Approved:
Roxane S. Villanueva
Education Program Supervisor , Science