This document contains a worksheet with questions about the vital functions of living things including nutrition, reproduction, and interaction. It asks students to identify parts of the digestive, respiratory, circulatory, and excretory systems. Questions cover the processes of digestion, respiration, blood circulation, and excretion. Students are asked to match terms to their definitions, identify structures in diagrams, correct false statements, and choose the right answers to fill in blanks. The worksheet assesses students' knowledge of the key systems and processes that allow organisms to obtain nutrients, dispose of waste, reproduce, and interact with their environment.

1. Centro:
Nombre: Fecha: Curso:
1. Name the 3 vital functions all living things perform.
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
2. Match the columns.
Reproduction ·
· Interaction with the
world around us.
Nutrition ·
· Makingmore living
things like us.
Interaction ·
· Transformingfood into
nutrientsthat give us
energy.
3. Name the vital function each picture refersto.
…………………………… …………………………… ……………………………
4. Which is nota partof the digestive system?

2. a) Mouth.
b) Nose.
c) Pharynx.
d) Stomach.
5. Completethese sentences.
 Your mouthsecretes ………………… that breaks the food down
more.
 The ………………… absorbs the water and mineralsand the rest is
faeces.
 The stomach secretes substances called ………………… .
 When we swallow the bolus, it goes into the pharynx and down
the ………………… .
6. Write trueor false. Then, correct them.
 Digestion begins when your teeth grind your food.
 The chymegoes into the large intestine.
 The rectum expels the faeces from the body.
7. Completethis text.
The respiratory system lets ustake in the ………………………… weneed
and it eliminates ………………………… . Our body uses the oxygen to
convert………………………… into …………………………. .

3. 8. Write the name of each phase in the respiration process.
 …………………………………………………… : the diaphragm contracts
and movesdown. This makes the lungs bigger and the air moves
from the mouthand nose to the lungs.
 ……………………………………………………: oxygen passes from the
alveoli into the blood and carbon dioxidepasses from the blood
into the alveoli.
 ……………………………………………………: the diaphragm relaxes and
movesup. This makes the lungsget smaller and pushcarbon
dioxideout of the body.
9. Match the columns.
Larynx·
· It is a muscle which contracts
and relaxes to let us breathe.
The nasalcavity ·
· It moistens and filters the air
we breathe.
The diaphragm ·
· It contains the vocal cords.
Lungs·
· They are spongy organs that
contain millions of alveoli.

4. 10. What is the differencebetween veinsand arteries?
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
11. Completethis text.
The …………………… pumps blood around thebody in the blood vessels.
There are three types of blood ……………………: arteries, veins and
…………………… . Capillaries are very thin vessels that connect the
…………………… and veins.
12. Choose the incorrect sentence.
a) Veins carry blood from the rest of the body to the heart.
b) Arteries carry blood from the rest of the body to the heart.
c) The heart pumps blood around thebody in the blood vessels.
13. Write trueor false. Then, correct them.
 Kidneys aretwo bean shaped organs.
 Ureters is a tube which links to the exterior.

5.  Bladder is the muscular cavity that stores urine.
14. Completethis text.
When we get hot or do exercise, sweat ………………… in our skin produce
………………… . This is a mixtureof ………………… substances and
………………… .
15. Choose the characteristics of the kidneys.
a) They have the shape of a bean.
b) They filter waste productsfrom the blood.
c) They are a muscular cavity.
d) They have the shape of a bag.
e) They return the clean blood back to the circulatory system.
16. Name the four health habits you can follow for the nutrition
function to work correctly.
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………

6. 17. For our nutrition function to work correctly weneed… . Choose the
wrongone.
a) a balance diet
b) water
c) drugs
d) do exercise