Assessment Directions. Choose the letter of the correct answer. Write the letter of your answers in your Science activity notebook
1. Which of the following is the simplest level of ecological organization? A. A population
B. A community
C. An ecosystem
D. An individual or species

2. The organ systems of plants consist of the root and shoot systems. Why is it important for these organ systems to work together?
A. To grow and survive
B. To avoid pests and other animals
C. To avoid floods and strong winds
D. To survive droughts and earthquakes

3. What level of biological organization is made up of a group of similar cells that perform a specific function?
A. Organ
B. Organism
C. System
D. Tissue

4. At which smallest level of organization in an organism can the characteristics of life be carried out?
A. Cell
B. Organ
C. Organ System
D. Tissues

5. Which of the following DOES NOT belong to the group?
A. Eyes
B. Large Intestine
C. Mouth
D. Stomach For Item number 7, refer to the image below.

6. To which level of biological organization does the picture belong?
A. Cell
B. Organ
C. Tissue
D. Organism

7. Which is the correct sequence from the lowest to highest-of the levels of organization in an organism?
A. Cells Tissues - Organs Organ systems Organisms Population Community Ecosystem Biosphere
B. Cells Tissues Organs Organ systems Organisms Community Population Ecosystem Biosphere
C. Cells Organs Tissues Organ systems organisms Population Community Ecosystem Biosphere
D. Cells - Tissues Organs systems Organ Organisms Population Community Ecosystem Biosphere

8. Which of the following units is the highest level of biological system?
A. Biosphere
B. Community
C.Ecosystem
D. Population

9. Which of the following statements is TRUE?
A. Groups of organs working together are called cells.
B. Groups of cells working together are called tissues.
C. Groups of organs working together are called organisms.
D. Groups of tissues working together are called organ systems.

10. How do you call the collection of organisms that belong to different populations but all live in the same area and interact with one another?
A. Community
B. Ecosphere
C.Ecosystem
D. Population​