Levels of Organization 1
What is a cell?
The smallest unit of life.
Which level contains the largest number of individual cells?
Organism
Which plant organ absorbs water and minerals from the soil?
Root
How many main types of animal tissue are there?
4
You cut your finger. Which type of tissue acts as a protective covering for your body?
Epithelial tissue
What is a tissue?
A group of similar cells with the same function.
The brain is an example of which level of organization?
Organ
Which plant organ is the main site of photosynthesis?
Leaf
Which type of muscle tissue pumps blood through the body?
Cardiac muscle
You are eating a sandwich. Which organ helps digest the food?
The stomach
What is an organ system?
Two or more organs working together to perform a specific job.
What is the term used to describe the different levels of organization from smaller to larger structures?
Hierarchy
A plant has two main organ systems. What are they?
Root system and shoot system
Which organ removes toxins from the blood and produces chemicals that help with digestion?
Liver
You suddenly touch something hot and pull your hand away. Which type of tissue helps your body respond to this stimulus?
Nerve tissue
A group of different tissues that work together to perform a particular function is known as _______
Organ
Which organ system is shown in the example with the brain and spinal cord?
Nervous system
Which plant tissue system contains xylem and phloem?
Vascular tissue system
The three types of muscle tissue.
skeletal, smooth and cardiac
A plant needs to transport water from its roots to its leaves. Which tissue is responsible for this?
Vascular tissue — specifically xylem.
Put these in order from smallest to largest: organ, cell, organism, tissue, organ system.
Cell → Tissue → Organ → Organ system → Organism
You are running a race. Your heart pumps blood, your lungs supply oxygen, and your muscles help you move. What level of organization allows these organs to work together?
Organ system.
A plant is growing in dry conditions and needs to reduce water loss. Which tissue system helps protect the plant and reduce water loss?
Dermal tissue system
The respiratory system includes the lungs, trachea, bronchi, and stomach.T or F??
F! The stomach is part of the digestive system.
A plant is growing rapidly and needs to store food and provide support. Which plant tissue system helps with these functions?
Ground tissue system.