S.Y.
2020 - 2021
EMETERIO-FEDERICA GEREZ NATIONAL HIGH SCHOOL
Brgy. San Agustin, Babatngon, Leyte Q1
303421
JHS LEARNING ACTIVITY SHEET WK5
LAS No.: 2
Name: _DANNY B. ELAGO________________________________________________________ Grade/Score:
__________
Grade and Section:_GRADE-9 HUMILITY______________________________________________________ Date:
November 04, 2020
Subject: Science 9
Type of Activity: Skills: Exercise/Drill
Activity Title: BIODIVERSITY AND EVOLUTION
MELC: Relate species extinction to the failure of populations of organisms to adapt to abrupt changes in the environment.
(S9LT-Ie-f-30)
Learning Target: To explain the importance of biodiversity.
To relate species extinction to the failure of populations of organisms to adapt to abrupt changes in the
environment.
References: Science Learner’s Module 9 pp.50-70 and Alternative Delivery Mode Science 9 pp. 1-18
ACTIVITY NO. 1
Multiple Choice. Select the letter of the best answer from among the given choices.
Write your answer on the space provided.
___A__1. Biodiversity is a short term for ____________.
a. biological diversity c. biological diverse
b. biological diversified d. bio diversified
___A__ 2. Environments always have both living and _________.
a. non-living factors c. biogeochemical cycles
b. nutrients d. ecosystem
___C__3. The ocean is the __________ ecosystem in the world.
a. shortest c. largest
b. smallest d. longest
___D__4. Abiotic factors are non-living things which determine the survival of an organism.
Which of the following items is an abiotic factor?
a. habitat c. temperature
b. food d. organism
_A/B____5. Biodiversity can affect the ________ of ecosystems and the _________ of populations.
a. sustainability ; stability c. stability ; sustainability
b. life ; existence d. existence; life
___D__6. The environmental conditions that keep a population from increasing in size and help balance
ecosystems is called ________.
a. limiting factor c. abiotic factor
b. biotic factor d. environmental factor
__B___7. Biodiversity and the survival of ecosystems have a direct proportional relationship. This means that if
biodiversity will increase, the chances of survival will also _______.
a. decrease c. increase then decrease
b. increase d. cannot be determined
___A__8. Trees in the forest compete for limited resources like space, sunlight and soil nutrients. Some small
plants like grasses and shrubs can’t grow well therefore, population decreases. Which limiting factor
greatly affects the population of grasses and shrubs in the forest ecosystem?
a. space c. soil nutrients
b. sunlight d. altitude
MMS Department - LAS No. 2 - Page 1 of 3
S.Y. 2020 - 2021
EMETERIO-FEDERICA GEREZ NATIONAL HIGH SCHOOL
Brgy. San Agustin, Babatngon, Leyte Q1
303421 JHS LEARNING ACTIVITY SHEET WK5
___A__9. The main source/s of oceanic pollution is/are_____.
a. plastics, volcanic ashes, nitric oxide c. oil, ozone, methane
b. detergent, nitric oxide, oil d. petroleum, oil, detergent
___C__10. Where do all water pollutants eventually end up?
a. streams c. oceans
b. rivers d. lakes
___D__11. The air pollutants responsible for acid rain are_______.
a. Nitric Oxide (NO) and Aluminum (Al)
b. Methane (CH4) and Carbon Dioxide (CO2)
c. Ozone (O3) and Chlorofluorocarbons (CFCs)
d. Sulfur dioxide (SO2) and Nitrogen Oxides (NOx)
___B__12. Which of the following items is the major cause of wildlife depletion?
a. pollution c. overfishing
b. deforestation d. eutrophication
___B__13. How is the forest ecosystem affected when trees are cut down?
a. Nutrients are lost in the soil.
b. Animals who depend on forests lose their shelter and food.
c. Oxygen will no longer be available for everyone.
d. There will be available space for humans in building houses and other infrastructures.
___D__14. What does eutrophication mean?
a. Forests are cleared to make the land available for other purposes.
b. People collect, capture, or harvest marine organisms such as coral reefs, fish, sea turtles, and
others in a large quantity.
c. The weakening or death of trees caused by Nitrogen Oxides (NOx) and Sulfur dioxide (SO 2) that
reacts with water, oxygen, and other chemicals in the atmosphere.
d. An increase of organic nutrients brought about by the chemicals and garbage thrown into the
bodies of water which stimulates the growth of algae and in turn, lessens the available oxygen
for other aquatic animals.
__B__15. The following are consequences of water pollution EXCEPT.
a. infectious diseases
b. oversupply of plant nutrients
c. accumulation of toxic chemicals
d. increased dissolved oxygen for marine life
Prepared by:
ARLENE R. RAAGAS
Science Teacher
Note: Practice Personal Hygiene Protocols at all times. Please include this in All Learning Activity Sheets.
Contact Number: 09560762385
MMS Department - LAS No. 2 - Page 2 of 3
S.Y. 2020 - 2021
EMETERIO-FEDERICA GEREZ NATIONAL HIGH SCHOOL
Brgy. San Agustin, Babatngon, Leyte Q1
303421 JHS LEARNING ACTIVITY SHEET WK5
MMS Department - LAS No. 2 - Page 3 of 3
