Question

1. an example of an organ system is _____________.

your answer

1. ____________________ organisms are made up of a single cell.

your answer

1. the ____________________ prevents the plant cell from bursting.

your answer

1. plant cells contain chloroplast which contain the green pigment called _____________.

your answer

Explanation:

• For question 8: An organ system is a group of organs that work together to perform a major function. The digestive system (which includes organs like the stomach, intestines etc. to digest food) is a common example.
• For question 9: Unicellular organisms have only one cell. Examples include bacteria, amoeba etc.
• For question 10: The cell wall in plant cells is rigid. When a plant cell takes in water (by osmosis), the cell wall exerts an opposing pressure (wall pressure) that prevents the cell from bursting (unlike animal cells which can burst in hypotonic solutions as they lack a cell wall).
• For question 11: Chloroplasts in plant cells contain chlorophyll. Chlorophyll is the pigment that absorbs light (especially red and blue light) which is used in the process of photosynthesis.

Answer:

1. Digestive system (other valid answers like circulatory system, respiratory system etc. are also acceptable)
2. Unicellular
3. Cell wall
4. Chlorophyll