Chapter 7: Diversity of Life

Question 1

Tissue

Answer 1

A group of similar cells with a shared function

Question 2

Animal tissues

Answer 2

Epithelial
Nervous
Muscular
Connective

Question 3

Epithelial cells

Answer 3

A number of different types of cells that cover something, typically an organ
E.g. Skin, the inner lining of the blood vessels, the respiratory system

Question 4

Function of epithelial tissues

Answer 4

Protection
Gas exchange
Excretion
Temperature regulation
Energy source

Question 5

Examples of muscular tissues

Answer 5

Smooth-muscle
Skeletal muscle
Cardiac muscle

Question 6

Skeletal muscle

Answer 6

Voluntary muscle
We have conscious control over it
E.g, biceps and triceps

Question 7

Smooth-muscle

Answer 7

The muscle in our arteries, veins and digestive system

Question 8

Cardiac muscle

Answer 8

Involuntary muscle
Unconscious control
Doesn’t tire easily
E.g. Heart

Question 9

Function of muscular tissues

Answer 9

Movement

Question 10

Nervous tissues

Answer 10

Highly specialised cells with short and long projections that are capable of sending electrical impulses

Question 11

Function of the nervous tissue

Answer 11

Causes us to respond to a stimulus

Question 12

Connective tissues

Answer 12

Connects/binds other tissues together

Question 13

Function of connective-tissue

Answer 13

Support, protection and movement

E.g. Plasma in the blood

Question 14

Plant tissues

Answer 14

Epidermal
Vascular
Ground

Question 15

Epidermal tissue

Answer 15

Layer of cells that make up the outer covering of the plant

Question 16

Function of the epidermal tissue

Answer 16

Aerial parts - protection

Roots parts - absorbs water

Question 17

Ground tissues

Answer 17

Many unspecialised cells that make up the bulk of the plant

E.g. carrots and potatoes

Question 18

Function of ground tissue

Answer 18

Stores nutrients like starch in storage organs (stem/roots)
In leaves for photosynthesis
In roots to transports water and minerals to vascular tissues

Question 19

Vascular tissues

Answer 19

Phloem - transport food around the plant

Xylem - transports water and nutrients to aerial parts of the plant

Question 20

Function of vascular tissues

Answer 20

Transport substances around the plant

Question 21

How to grow plant cells

Answer 21

Micropropagation
Isolated cells
Cells multiply by mitosis
Callus —> Embryo —> Plant

Question 22

How to grow animal cells

Answer 22

Skin grafting
Skin cells obtained
Enzymes added
Individual cells isolated
Controlled culture medium 
Sheets of cells grown

Question 23

Advantages of micro propagation

Answer 23

Large quantities in a short time
Genetically identical
Inexpensive