Biology HL
Biology HL
4
Chapters
553
Notes
Theme A - Unity & diversity
Theme A - Unity & diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme B - Form & Function
Biology HL
Biology HL

Theme B - Form & Function

Adaptations Thriving In Hot Deserts & Lush Rainforests

Word Count Emoji
488 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Hot deserts - sun, sand, & scarcity 🔥

Ever tried walking barefoot on the beach on a sunny day? Ouch! Now imagine creatures that live in such high heat all the time.

Characteristics

  • ☀️ Super hot days
  • 🌙 Much colder nights
  • 🌧️ Little to no rain
  • 🏜️ Minimal soil with scarce organic content

Saguaro cactus (nature's water tank)

  • 🌐 Wide roots that can drink water from 30 m away
  • 🕳️ Deep roots that reach 1m into the ground
  • 🌵 Fatty stem for storing water
  • 📉 Pleated stems for flexible water storage
  • 🌞 Vertical stems to catch sunlight when it's cool
  • 🍃 Thick skin to limit water loss & leaves that are spiky for protection and to reduce water loss
  • 🌙 Night-time metabolism to reduce daytime water loss

Real-world Fun Fact: The saguaro cactus can store up to 200 gallons of water during a rainstorm! That's almost 800 bottles of your favorite drink.

Fennec fox (desert's cool kid)

  • 🌚 Nocturnal, avoiding the sizzling heat
  • 🏠 Cool underground dens
  • 🦊 Long, thick fur for insulation; think of it as its own comfy blanket
  • 🐾 Furry footpads; like built-in sandals
  • 🤍 Light coat to bounce off sunlight
  • 🐰 Big ears to cool down; nature's AC system
  • 🌬️ Panting to release heat

Real-world Fun Fact: Those adorable giant ears of the fennec fox make it a master listener; it can even hear prey moving underground!

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IB Resources
Theme B - Form & Function
Biology HL
Biology HL

Theme B - Form & Function

Adaptations Thriving In Hot Deserts & Lush Rainforests

Word Count Emoji
488 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Hot deserts - sun, sand, & scarcity 🔥

Ever tried walking barefoot on the beach on a sunny day? Ouch! Now imagine creatures that live in such high heat all the time.

Characteristics

  • ☀️ Super hot days
  • 🌙 Much colder nights
  • 🌧️ Little to no rain
  • 🏜️ Minimal soil with scarce organic content

Saguaro cactus (nature's water tank)

  • 🌐 Wide roots that can drink water from 30 m away
  • 🕳️ Deep roots that reach 1m into the ground
  • 🌵 Fatty stem for storing water
  • 📉 Pleated stems for flexible water storage
  • 🌞 Vertical stems to catch sunlight when it's cool
  • 🍃 Thick skin to limit water loss & leaves that are spiky for protection and to reduce water loss
  • 🌙 Night-time metabolism to reduce daytime water loss

Real-world Fun Fact: The saguaro cactus can store up to 200 gallons of water during a rainstorm! That's almost 800 bottles of your favorite drink.

Fennec fox (desert's cool kid)

  • 🌚 Nocturnal, avoiding the sizzling heat
  • 🏠 Cool underground dens
  • 🦊 Long, thick fur for insulation; think of it as its own comfy blanket
  • 🐾 Furry footpads; like built-in sandals
  • 🤍 Light coat to bounce off sunlight
  • 🐰 Big ears to cool down; nature's AC system
  • 🌬️ Panting to release heat

Real-world Fun Fact: Those adorable giant ears of the fennec fox make it a master listener; it can even hear prey moving underground!

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟