carnivorous plants final · 2016-01-06 · carnivorous plants what is a carnivorous plant? • most...
Post on 08-Jul-2020
11 Views
Preview:
TRANSCRIPT
Carnivorous PlantsWhat is a carnivorous plant?
• Most carnivorous plants are autotrophic (photosynthetic) but live in nutrient-poor habitats
• They get extra nutrients, especially nitrogen and phosphorus, from capturing and digesting small animals
• The leaves of carnivorous plants are adapted for capturing animals
Mississippi is home to four types of carnivorous plants:
• Sundews• Butterworts• Pitcher plants• Bladderworts
© Project Magnolia grandiFLORA wwww.mississippiplants.org
Leaves of carnivorous plants can be sticky, as in sundews (above left), pitchers (above right), or snap traps, such as Venus fly trap
Key to Symbols
HABIT
Herb Small Large Tree/Shrub Tree
LEAVESSimple Simple <5 cm long >5 cm long
Compound Compound <5 cm long >5 cm long
FLOWERS
<1 cm 1-5 cm >5 cm
Distribution maps for species are based on the PLANTS Database, USDA, NRCS. 2014. (http://plants.usda.gov) National Plant Data Team, Greensboro, NC.
Photo Credits: M. Alford, M. Huneycutt, H. Sullivan, L. Wallace
SundewsDrosera spp.
Identifying Features• Sticky green leaves• The most diverse group of carnivorous
plants in North America • 5 species in Mississippi• Grow in bogs of the Longleaf Pine
Ecosystem
© Project Magnolia grandiFLORA wwww.mississippiplants.org
PresentAbsent
A: Drosera brevifolia flower; B: leaves; C: close-up of leaves showing sticky hairs
A B
C
QuestionsGrades K-2:1. What does this plant use its leaves for? 2. How does this plant trap insects?
Grades 3-5:1. What does this plant get from the insects it
traps in its leaves? 2. How are pollinators different from the
insects it traps in its leaves?
Grades 6-8:1. What are the basic things this plant needs
to live and reproduce? How does it get each of these?
2. What place in the food web would this plant be?
Grades 9-12:1. Carnivory has evolved independently in
different groups of angiosperms. Explain the selective pressures necessary for carnivory to evolve in plants.
2. What nutrients are derived from the insects that are digested by this plant versus those obtained through the root system?
© Project Magnolia grandiFLORA www.mississippiplants.org
ButterwortsPinguicula spp.
Identifying Features• Sticky leaves• Unlike sundews, the leaves of butterworts
lie flat on the ground • 4 species in Mississippi • Grow in bogs of the Longleaf Pine
Ecosystem
© Project Magnolia grandiFLORA wwww.mississippiplants.org
PresentAbsent
A: leaves; B: flower
A B
QuestionsGrades K-2:1. What does this plant use its leaves for? 2. How does this plant trap insects?
Grades 3-5:1. What does this plant get from the insects it
traps in its leaves? 2. How are pollinators different from the
insects it traps in its leaves?
Grades 6-8:1. What are the basic things this plant needs
to live and reproduce? How does it get each of these?
2. What place in the food web would this plant be?
Grades 9-12:1. Carnivory has evolved independently in
different groups of angiosperms. Explain the selective pressures necessary for carnivory to evolve in plants.
2. What nutrients are derived from the insects that are digested by this plant versus those obtained through the root system?
© Project Magnolia grandiFLORA www.mississippiplants.org
Pitcher PlantsSarracenia spp.
Identifying Features• Leaves are like pitchers filling with
rainwater• Curious animals that come for a drink or
to investigate the pitchers fall in and are digested by the plant
• 6 species in Mississippi• Grow in Longleaf Pine bogs
© Project Magnolia grandiFLORA wwww.mississippiplants.org
PresentAbsent
A: habit; B: looking down into a pitcher; C: pitcher
A
C
B
QuestionsGrades K-2:1. What does this plant use its leaves for? 2. How does this plant trap insects?
Grades 3-5:1. What does this plant get from the insects it
traps in its leaves? 2. How are pollinators different from the
insects it traps in its leaves?
Grades 6-8:1. What are the basic things this plant needs
to live and reproduce? How does it get each of these?
2. What place in the food web would this plant be?
Grades 9-12:1. Carnivory has evolved independently in
different groups of angiosperms. Explain the selective pressures necessary for carnivory to evolve in plants.
2. What nutrients are derived from the insects that are digested by this plant versus those obtained through the root system?
© Project Magnolia grandiFLORA www.mississippiplants.org
BladderwortsUtricularia spp.
Identifying Features
• Leaves are inflated bladders that suck in plankton
• 11 species in Mississippi • Grow in roadside ditches, ponds, and
other areas with standing water
© Project Magnolia grandiFLORA wwww.mississippiplants.org
PresentAbsent
A: U. inflata in its natural habitat; B: detail of the modified leaves
A
B
QuestionsGrades K-2:1. What does this plant use its leaves for? 2. How does this plant trap insects?
Grades 3-5:1. What does this plant get from the insects it
traps in its leaves? 2. How are pollinators different from the
insects it traps in its leaves?
Grades 6-8:1. What are the basic things this plant needs
to live and reproduce? How does it get each of these?
2. What place in the food web would this plant be?
Grades 9-12:1. Carnivory has evolved independently in
different groups of angiosperms. Explain the selective pressures necessary for carnivory to evolve in plants.
2. What nutrients are derived from the insects that are digested by this plant versus those obtained through the root system?
© Project Magnolia grandiFLORA www.mississippiplants.org
top related