B1.2.1 - Levels of Organisation Flashcards
What is the funciton of the following organ: intestines
Absorbs nutrients from food
What is the function of the respiratory system?
takes in oxygen and removes carbon dioxide (gas exchange)
Identify the organ.
List 3 examples of organ systems.
Circulatory system
Respiratory system
Reproductive system
Skeletal system
Urinary system
Nervous system
Digestive system
What is the funciton of the following organ: stomach
digests food
What is the function (job) of the circulatory system?
transports materials around the body in the blood.
Identify the organ.
Multicellular organisms have 5 levels of organisation.
List the levels in order of complexity (least complex first)
Cells
Tissues
Organs
Organ Systems
Organism
What is the funciton of the following organ: lungs
Take in oxygen and remove carbon dioxide (gas exchange)
Many nerve cells joined together make a….
Nerve tissue
Identify 3 plant organs
Leaf - absorbs light for photosynthesis
Stem - holds plant upright
Root - anchors plant into ground and takes in water/minerals.
List 3 examples of specialised cells.
Red Blood Cell
Nerve Cell
Ciliated epithelial cell
Root hair cell
White blood cell
Muscle cell
What is an organ?
An organ is a gorup of tissues that work together to perform a certain function.
E.g. the digestive system contains many organs to digest food.
What is a tissue?
A group of similar cells working together to perform a specific function (job).
e.g. muscle tissue - contracts to allow movement.
What is the funciton of the following organ: brain
controls the body
What is the funciton of nerve tissue?
To transmit messages around the body.
Many muscle cells joined together make a….
Muscle tissue
Identify the organ.
Identify the organ.
What is the funciton of the following organ: bladder
stores urine
Identify the organ.
What is the funciton of the following organ: liver
Removes toxins (poisons) from the blood
Produces bile to help digestion
Many root hair cells joined together make
root tissue
What is meant by a specialised cell?
A cell that has adapted speciali features to carry out a specific function (job).
e.g. sperm cell has a tail to swim to the egg
