3.5 Cell specialisation and organisation Flashcards
1
Q
Epithelial cells
A
They line the surface of organs and often have a protective or secretory function.
2
Q
Xylem
A
Used to transport water and mineral ions throughout the plant and also gives mechanical support.
3
Q
What tissues make up the stomach? (3)
A
- muscles to churn and mix contents
- epithelium to protect stomach wall and produce secretions
- connective tissue to hold together the other tissue
4
Q
What tissues make up a plant leaf? (5)
A
- palisade mesophyll to carry out photosynthesis
- spongy mesophyll adapted for gaseous diffusion
- epidermis is to protect leaf and all diffusion
- phloem to transport organic materials away from leaf
- xylem to transport water and ions into the leaf
5
Q
Name 3 organ systems in humans.
A
- Digestive system
- Respiratory system
- Circulatory system
6
Q
What is meant by a tissue?
A
A collection of similar cells are formed a specific function
7
Q
What is meant by an organ?
A
A combination of tissues that are coordinated to perform a variety of functions, although they often have one predominant major function.
8
Q
What is meant by an organ system?
A
Organs that work together as a single unit, they may be grouped together to perform particular function is more efficiently.
