Answer:
1. Cellphone screen - plane 
2. edge of a wall - line 
3. grain of sell - point 
4. strand of straight hair - line 
5. Tip of a crayon -point
Explanation:
1. Cellphone screen - It represents a 2 D plane surface. Hence it is a representation of a plane 
2. edge of a wall - It is representation of a line 
3. grain of sell - It is representation of a point 
4. strand of straight hair - It is representation of a line 
5. Tip of a crayon - It is representation of a point