unit 2natural science

8/18/2019 Unit 2Natural Science

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Unit 2 Natural Science

1. Match each vital function to the correct word.

Reproduction Senses

Interaction Food

Nutrition Babies

2. One of the following functions is perfored b! !ou but not b! a

plant. Select.

"" Reproduction

"" Nutrition

"" #ounication

$. %rue or False.

"" %he digestive s!ste is the onl! s!ste that ta&es part in nutrition.

"" %he senses do not ta&e part in interaction.

'. Match.

(earing )avours and tastes

%aste sounds

Sell colours

Sight sells

%ouch te*tures



Nutrition is the process where the bod! uses the nutrients in order

to function+ grow and to perfor the vital functions.

%here are four systems which ta&e part in nutrition.

, %he digestive s!ste ,,- transfors food into nutrients which pass

into the blood.

, %he respirator! s!ste ,,- ta&es in air+ selects the gases that we

need and e*pels the gases that we dont need.

, %he circulator! s!ste ,,- carries the blood to all the parts of the

organis.

, %he e*cretor! s!ste ,,- cleans the blood of waste products.



/. Select.

0hat is nutrition

"" Nutrition involves eating health! food which gives us energ!.

"" Nutrition is a process that allows the bod! to use the nutrients infood.

0hich s!ste transports nutrients around the organis

"" %he e*cretor! s!ste. "" %he digestive s!ste. "" %he circulator! s!ste. "" %he respirator! s!ste

0hich s!ste ta&es in o*!gen fro the air

"" %he e*cretor! s!ste. "" %he digestive s!ste. "" %he circulator! s!ste. "" %he respirator! s!ste.

0hich s!ste e*pels waste products

"" %he e*cretor! s!ste. "" %he digestive s!ste. "" %he circulator! s!ste. "" %he respirator! s!ste.

0hich s!ste transfors food into nutrients

"" %he e*cretor! s!ste. "" %he digestive s!ste. "" %he circulator! s!ste.

"" %he respirator! s!ste.



Reproduction begins with fertiliation+ it continues withpregnanc! and ends with birth. Fertilisation occurs when an egg and asper eet.

3fter the egg has been fertilied+ the state of pregnanc! occurs in theother.

4uring pregnanc! the others bod! e*periences changes. Soe help

the bab! to develop inside the other and others are in preparation

for the birth and to feed the newborn bab!.

5regnanc! lasts appro*iatel! nine onths. 4uring this tie+ the

future bab!+ or foetus+ fors and develops inside the others bod!.

4o !ou &now how long huan pregnancies last

"" 6 da!s "" 6 onths "" 6 !ears

3t the beginning of a pregnanc!+ the others bod! develops an

organ in the uterus. It is this organ that supplies food fro the other

to the foetus.

4o !ou &now the nae of this organ

"" 5lacenta "" 7bilical cord "" Foetus

%he placenta is connected to the foetus b! the ubilical cord. %he

foetus receives o*!gen and nutrients fro the placenta.

%he foetus is well protected inside the others wob

4o !ou &now the nae of the sac that protects the foetus

"" 3niotic sac "" Bionicsac "" Fallopian sac

unit 2natural science

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