Biology HL
4
Chapters
553
Notes
Theme A - Unity & diversity
Theme B - Form & Function
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Biology HL
Theme D - Continuity & Change
Phenology & Its Role In Detecting Climate Change
593 words
3 mins read
Last edited on 5th Nov 2024
Table of content
Intro to Phenology 🌼
- Phenology is the study of the timing of biological events. Imagine it like nature's calendar! 📅
- Phenologists = Biologists who are basically nature’s timekeepers! 🕰️
Why is Phenology Important? 🌸
- Can provide evidence of climate changes like global warming.
- Offers insights into how plants and animals are responding to changes in their environment.
Photoperiod 101 🌞
- Definition: The length of time an organism is exposed to light during a 24-hour period. Also known as “day length”. Think of it like an organism's daily sunlight dosage! ☀️
- Fun Fact: Day length changes with seasons, especially near Earth's poles. But guess what? It remains stable year after year and isn't affected by global warming or climate change.
Plants & Photoperiod 🌱
- Flowering Time
- Some plants bloom when day length is short - e.g., chrysanthemums and poinsettias (those vibrant festive plants we see during the holidays! 🎄).
- Others only flower when day length is long, like lettuce, spinach, beets, and potatoes.
- Deciduous Trees and Day Length
- Shorter day lengths in autumn = growth stops right before winter. Ever noticed those little protective covers (buds) at the end of tree branches? That's the tree getting ready for winter! This is called 'bud set'. 🍂
- The start of the growth season = 'budburst'. Think of it as trees waking up from a winter nap and stretching out new leaves! 🌿
- Key Point: While some species rely on day length for budburst, many depend on temperature.
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Biology HL
Theme D - Continuity & Change
Phenology & Its Role In Detecting Climate Change
593 words
3 mins read
Last edited on 5th Nov 2024
Table of content
Intro to Phenology 🌼
- Phenology is the study of the timing of biological events. Imagine it like nature's calendar! 📅
- Phenologists = Biologists who are basically nature’s timekeepers! 🕰️
Why is Phenology Important? 🌸
- Can provide evidence of climate changes like global warming.
- Offers insights into how plants and animals are responding to changes in their environment.
Photoperiod 101 🌞
- Definition: The length of time an organism is exposed to light during a 24-hour period. Also known as “day length”. Think of it like an organism's daily sunlight dosage! ☀️
- Fun Fact: Day length changes with seasons, especially near Earth's poles. But guess what? It remains stable year after year and isn't affected by global warming or climate change.
Plants & Photoperiod 🌱
- Flowering Time
- Some plants bloom when day length is short - e.g., chrysanthemums and poinsettias (those vibrant festive plants we see during the holidays! 🎄).
- Others only flower when day length is long, like lettuce, spinach, beets, and potatoes.
- Deciduous Trees and Day Length
- Shorter day lengths in autumn = growth stops right before winter. Ever noticed those little protective covers (buds) at the end of tree branches? That's the tree getting ready for winter! This is called 'bud set'. 🍂
- The start of the growth season = 'budburst'. Think of it as trees waking up from a winter nap and stretching out new leaves! 🌿
- Key Point: While some species rely on day length for budburst, many depend on temperature.
Unlock the Full Content!
Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟