2c - levels of organisation

Question 1

what is a tissue?

Answer 1

a tissue is a group of similar cells working together to perform a common function

Question 2

what is an organ?

Answer 2

an organ is a group of different tissues working together to perform a common function

Question 3

what is an organ system?

Answer 3

an organ system is a group of different organs working together to perform a common function

Question 4

explain why the cardiovascular system is considered an “organ system”

Answer 4

because it consists of a group of organs that work together to perform the common function of transporting substances around our body.

Question 5

what are the levels of organisation in organisms, from least complex to most complex?

Answer 5

organelles> cells> tissues> organs> organ systems

Question 6

name as many organ systems as you can

Answer 6

• respiratory system
• cardiovascular system
• nervous system
• digestive system
• skeletal system
• muscular system
• endocrine system
• lymphatic system
• urinary system
• integumentary system
• reproductive system