Biology 9 Lesson 63: Review biology and environment
1. Theoretical Summary
1.1. Environment and ecological factors
1.2. The division of groups of organisms based on ecological limits
1.3. Same-species and different-species relationships
1.4. Systematization of concepts
1.5. The characteristics of the population
1.6. Typical signs of a biome
2. Illustrated exercise
Lesson 1: In what ways are human populations different from other biomes? What is the meaning of population pyramid?
– Human population is different from biological population: human population has socio-economic characteristics such as law, marriage, education, and culture. Because humans have labor and thinking, they have the ability to self-regulate ecological characteristics in populations, and at the same time improve nature.
+ Meaning of the population pyramid: The population pyramid represents the population characteristics of each country. The population pyramid consists of the young population pyramid and the old population pyramid.
– Young population pyramid: is a population pyramid with a wide bottom due to the high number of children born each year. The many oblique sides of the tower and the pointed top of the tower indicate a high mortality rate and therefore a low life expectancy.
Old population pyramid: is a population pyramid with a narrow bottom, a non-pointed top, an almost vertical side of the pyramid, indicating both low birth and death rates, so life expectancy is high.
Lesson 2: Why is it said that environmental pollution is mainly caused by human activities? List measures to reduce pollution.
– Say that environmental pollution is mainly caused by human activities because environmental pollution caused by natural activities is very little such as: volcanoes spewing lava causing a lot of dust, natural disasters and floods create favorable conditions. conditions for the growth of many pathogenic microorganisms. There are many other causes of pollution, mainly caused by human activities.
Measures to limit pollution:
- Installation of air purification equipment for factories.
- Use a lot of new energy that does not generate emissions (wind energy, solar).
- Create a settling tank and filter wastewater.
- Construction of a waste treatment plant.
- Bury and burn waste scientifically.
- Promote scientific research to predict and find preventive measures.
- Build a factory to recycle waste into raw materials, utensils, etc.
- Build green parks, plant trees.
- Educating to raise people’s awareness about pollution and how to prevent it.
- Building a place to strictly manage highly hazardous substances.
- Incorporating animal manure before use to produce biogas.
- Food production and safe food.
3.1. Essay exercises
Question 1: Is it possible based on morphological characteristics to distinguish the impact of ecological factors from the adaptation of organisms?
Verse 2: What are the differences between same-species and interspecies relationships?
Question 3: In what basic relationships do communities and populations differ from each other?
Question 4: Describe the negative and positive human activities for the environment?
3.2. Multiple choice exercises
Question 1: What is the most favorable position in the ecological limit for organisms to grow and develop?
A. Near the bottom lethal point.
B. Near the top lethal point.
C. At the extreme pole
D. In the midpoint of the bottom lethal and the top lethal.
Verse 2: Why is human factor separated into a separate ecological factor group?
A. Because people have thinking and work.
B. Because humans are the most evolved compared to other animals.
C. Because human activities are different from other creatures, humans have wisdom, so they can both exploit natural resources and improve nature.
D. Because man has the ability to master nature.
Question 3: When does the density of animal populations increase?
A. When living conditions change suddenly such as floods, forest fires, epidemics, …
B. As the population’s living area expands.
C. When there is a herd separation of some individuals in the population.
D. When the food source in the population is abundant.
Question 4: Which of the following is not an example of an organism?
A. Penguins live on the Antarctic coast.
B. The individual hamsters live in a rice field.
C. Cobras live on three islands far apart.
D. The resinous pine forest is distributed in the Northeast region of Vietnam.
Question 5: If a country has more than 30% of the population under 15 years of age, less than 10% of the population of the elderly, and a low life expectancy, it is classified as a country with low life expectancy.
A. Relatively stable population pyramid
B. Declining population pyramid
C. Stable population pyramid
D. The pyramid of population growth
After completing this lesson, you should know the following requirements:
- Systematize basic knowledge about organisms and the environment, know how to apply theory to production and life practice.
- Train students skills to compare, synthesize, generalize knowledge, and work in groups.
- Educating students to love nature, consciously protect nature and living environment.