14-ch17-plants-fungiWES

14-ch17-plants-fungiWES - Chapter 17 Plants, Fungi &...

Info iconThis preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 17 Plants, Fungi & the Colonization of Land
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The greening of earth (by plants, 500 mya) consider earth before plants land plants – all plants proper to this clade (vs. protists); but some have returned to aquatic environments appx. 290,000 species extant supply Oxygen constitute the base of the trophic pyramid (food chain) provide structural diversity (= habitats for other species) stabilize landscapes (e.g., prevent erosion) role in chemical / nutrient cycles. ..
Background image of page 2
Terrestrial ecosystem was a paradise waiting to happen when plants invaded land 500 million years ago abundance of untapped resources. .. sunlight unfiltered by water (or plankton competitors) abundant CO 2 mineral nutrients few herbivores or pathogens (yet) but consider the trade-off. .. higher surface area to volume ratio photosynthesis gas exchange water loss
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1) passenger bus surface area to volume: small or large? why?
Background image of page 4
2) container ship surface area to volume: small or large? why?
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3) surf board surface area to volume: small or large? why?
Background image of page 6
4) mosquito surface area to volume: small or large? why?
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
5) capillaries of the mammalian lung surface area to volume: small or large? why?
Background image of page 8
6) branches and leaves on an oak tree surface area to volume: small or large? why?
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Key terrestrial adaptations leaves (photosynthetic organ) vessels (transport water, food) seeds (protect offspring until conditions are favorable) flowers (very successful reproductive structures) cuticle – waxy extracellular epidermal covering; prevents water loss from plant surfaces
Background image of page 10
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
hugging carpets and are only a few cells thick. They have no true roots, leaves or vessels. They also require water for the dispersal of sperm.
Background image of page 12
Image of page 13
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 38

14-ch17-plants-fungiWES - Chapter 17 Plants, Fungi &...

This preview shows document pages 1 - 13. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online