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Processes of Life

An explanation of how we describe living things and the processes that all living things do.

'Processes of Life' worksheet

Key stage:  KS 3

Curriculum topic:   Biology: Structure and Function of Living Organisms

Curriculum subtopic:   Cells and Organisation

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

All living things perform seven processes that distinguish them from non-living things.

To be able to remember them, use MRS GREN, but feel free to make up a word or phase of your own. MRS GREN goes like this:

 

Movement: Animals move to escape danger or to find resources, just like food and plants move as they grow towards the Sun and their roots grow to find water.

Respiration: All organisms respire, using glucose from food and oxygen from the air, to release energy.

Sensitivity: Living things sense changes in the environment around them so they can adapt to those changes, for example we sense it when it gets hot and we try to cool ourselves down.

 

Growth: Growth is necessary to increase in size and to replace damaged and dead cells.

Reproduction: Living organisms have to reproduce, so their species does not die out. That is why humans have babies.

Excretion: Waste products of respiration have to come out of the body through the kidneys, skin and lungs in animals and stomata (small openings on leaf) in plants.

Nutrition: Living things need food to keep them going and they have different ways of taking those nutrients and breaking them down to what is useful for them.

What life process begins with the letter E?

What are the two substances used by living organisms for respiration?

glucose

starch

carbon dioxide

oxygen

Tick two changes that living things can sense.

movement

animals

cold

stability

Why is growth good for us?

to get rid of waste

to repair wounds

to increase in size

to move

What life process begins with N?

What do plants move towards?

Sun

air

space

What do living things do so that their species does not die out?

move

excrete

reproduce

Tick the two organs that are involved in excretion in plants and animals.

lungs

stomata

heart

stem

How many life processes are there?

Why do animals move?

to move towards the Sun

to find food

to find a cell

  • Question 1

What life process begins with the letter E?

CORRECT ANSWER
excretion
EDDIE SAYS
Excretion is the E in MRS GREN.
  • Question 2

What are the two substances used by living organisms for respiration?

CORRECT ANSWER
glucose
oxygen
EDDIE SAYS
Glucose and oxygen are used by organisms to respire and make energy.
  • Question 3

Tick two changes that living things can sense.

CORRECT ANSWER
movement
cold
EDDIE SAYS
Movement and cold are two changes living things can sense.
  • Question 4

Why is growth good for us?

CORRECT ANSWER
to repair wounds
to increase in size
EDDIE SAYS
Growth is good so living organisms can increase in size and replace dead or damaged cells (repair wounds).
  • Question 5

What life process begins with N?

CORRECT ANSWER
nutrition
EDDIE SAYS
Nutrition is the N in MRS GREN.
  • Question 6

What do plants move towards?

CORRECT ANSWER
Sun
EDDIE SAYS
Plants move towards the Sun.
  • Question 7

What do living things do so that their species does not die out?

CORRECT ANSWER
reproduce
EDDIE SAYS
Living things reproduce so that their species does not die out.
  • Question 8

Tick the two organs that are involved in excretion in plants and animals.

CORRECT ANSWER
lungs
stomata
EDDIE SAYS
Lungs in animals and stomata in plants are involved in excretion.
  • Question 9

How many life processes are there?

CORRECT ANSWER
seven
Seven
7
EDDIE SAYS
There are seven life processes.
  • Question 10

Why do animals move?

CORRECT ANSWER
to find food
EDDIE SAYS
Animals move to find food.
---- OR ----

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