Chapter 5 a Flashcards
What performs all life functions in unicellular organisms?
The single cell
Unicellular organisms function independently as a single unit.
What are the four levels of organization in complex organisms?
- Cells
- Tissues
- Organs
- Systems
These levels illustrate the increasing complexity in multicellular organisms.
What is the basic unit of structure and function in living things?
Cells
Cells may serve specific functions within the organism.
What level of organization is made up of cells that are similar in structure and function?
Tissues
Tissues work together to perform a specific activity.
What are examples of tissues?
- Muscle
- Bone
- Blood
These are types of tissues that perform specific functions in the body.
What is an organ made up of?
Tissues
An organ contains two different types of tissue working together.
Give examples of organs.
- Heart
- Brain
- Skin
Organs perform specific activities crucial for survival.
What are systems composed of?
Groups of organs
Systems work together to perform specific functions.
What is the function of stomata in plants?
Control movement
Stomata regulate gas exchange in plants.
What is the role of xylem in plants?
Transport of water and minerals from the roots to the leaves
Xylem cells are specialized for this function.
What do phloem cells transport?
Sugars and other nutrients throughout the plant
Phloem is essential for plant nutrition.
What are vascular tissues responsible for?
Carrying water and nutrients
Vascular tissues run through the ground tissue of vascular plants.
What does dermal tissue refer to in plants?
Single layer of cells covering the outside of a plant
Dermal tissue protects the plant’s interior.
List major plant organs.
- Leaves
- Flowers
- Fruits
- Stems
- Roots
Each organ has specific functions vital for the plant’s life.
What is the function of the root system in plants?
Absorbs water and nutrients from the soil and provides support and structure
The root system is crucial for plant stability and nutrition.
What is the shoot system responsible for?
Reproductive and non-reproductive sections of the plant
This includes flowers, fruits, leaves, and stems.
What type of tissue covers surfaces over other organs?
Epithelial tissue
It forms protective layers such as the skin.
What role does connective tissue play in the body?
Supports and holds together other tissues
Examples include blood, fat, and bone.
What is the function of muscle tissue?
Can contract, becoming shorter and fatter
Muscle tissue is essential for movement.
What does nerve tissue do?
Sends electrical signals around the body
Nerve tissue is crucial for communication within the body.
How do organs work together?
To complete a task
Different organs collaborate to perform complex functions.
What is an example of how organs work together in the body?
Different organs work together to break down food
This process is vital for nutrient absorption.
