Organise Cells Into Tissues, Organs & Organ Systems

Question 1

What’s a tissue defined as

Answer 1

A group of specialised cells which work together to carry out a particular function

Question 2

What are the 3 types of muscle tissue

Answer 2

Skeletal
Smooth
Cardiac

Question 3

What do each of the 3 types of muscle tissue do

Answer 3

Skeletal - contract to move bones
Smooth - contract to move substances along tracts
Cardiac - contract to make heart beat & move blood around the body

Question 4

Adaptations of muscle tissue

Answer 4

Many mitochondria - to release energy for muscle contraction via aerobic respiration
Many blood vessels - provides oxygen & glucose needed for a high rate of aerobic respiration

Question 5

3 types of cartilage

Answer 5

Hyaline - found in embryos & trachea
Fibrous - found in knee joint & discs between vertebrae
Elastic - found in ears & flap over larynx

Their function is to provide suppoer

Question 6

Xylem function

Answer 6

Transport mineral ions & water in plants

Question 7

Phloem function

Answer 7

Transport sugars & amino acids

Question 8

Structure of xylem

Answer 8

• no cross walls -> continuous hollowed tubes formed
• dead cells with no contents -> easy unimpeded water movements
• lignified walls -> provides strength & support + prevents collapse under tension

Question 9

Structure of the phloem

Answer 9

-> cells are joined from end to end perforated sieve plates, & few organelles
-> allows easy flow of sugars and amino acids