gas exchange

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E J M I O X K G K P H L R L T K I H J X G
K W U U G C F O R A U I P T A M L V W F Y
H L S W J U O T Y H Q S U N O H V E E R K
Y Q C G R A N I E W W W Y E Q Y P N Q W B
V F L P O A G O K S A E G I A O C T Y O X
X J E E K I L U V E T P S D E I E I U G Y
I T S R X D S D P L E B F A B J D L R A K
Q H D M R T R A Y C R V E R K L G A N J K
Q I Y E E J I Q C A P E T G V U U T I Y O
V N P A D I A J E R R O K N T U T I O K V
X W P B B J H P M I O D K O R G G O B T M
I A I L G P Y C W P O K N I A I N N W S N
H L I E T G N F T S F E C S C T T X F N R
D L I W Q D I W S X Q A N U H R W N Q Q F
C S I A R Q T P S D X Y K F E A S C K M Q
D E T L X L F O H S K S F F O C W J I C G
D R B L K G I K X I D M K I L H H G L W R
K M G S D M F V K A X K O D E E N R E G M
K X T S O N W L F L E H S F S A P O A Q N
H Q C F A W A D A P T K L S T E I V A G O
E G A N R D O C L T O V E F B Y G D J X N

Clues

  • To reduce water loss insects have what around their spiracles? (4, 5)
  • What are pores on the tracheae called? (9)
  • What do the tracheae branch off into? (10)
  • What do they use to close their spiracles to control water loss? (7)
  • What feature of their surface helps with water control? (10)
  • What is another way? (11)
  • What is another? (9, 5)
  • What is one adaptation of teh tracheoles to increase diffusion rate? (4, 5)
  • What is one way respiratory gases move in and out of the tracheae? (9, 8)
  • What structure do insects use to exchange gas? (8)

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