Difference between revisions of "AY Honors/Cacti/Answer Key"

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{{honor_header|1|1944|Nature<br>General Conference<br>2001 Edition}}
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{{honor_header|1|1944|Nature|General Conference}}
  
 
==1. Name the chief characteristics of a cactus.==
 
==1. Name the chief characteristics of a cactus.==
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:Cacti are used for:
 
:Cacti are used for:
  
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:1. Decorating
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:1. '''Decorating''' - as [[W:Houseplants|houseplants]], in [[W:Xeriscape|dry gardens]], or, even as a [[W:Cactus_fence|fence]].
  
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:2. Edible Fruit Producing  
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:2. '''Edible Fruit Producing''' - such as [[W:Opuntia|Prickly Pear]], [[W:Hylocereus|Hylocereus]], [[W:Dragon_fruit|Dragon fruit]].
  
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:3. Psychoactive uses
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:3. '''Psychoactive uses''' - the [[W:Peyote|Peyote]], ''Lophophora williamsii'', is a well-known [[W:Psychoactive|psychoactive agent]] used by Native Americans in southwestern United States.
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:4. '''Host for bugs''' - the [[W:Opuntia|Opuntia]] is also used as a host for cochineal bugs for the [[W:Cochineal|Cochineal]] dye industry.
  
 
==3. In what places are cacti the most plentiful? Why?==
 
==3. In what places are cacti the most plentiful? Why?==
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Now go and identify more...
 
Now go and identify more...
  
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<gallery>
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Image:cactaceae-compass_barrel.jpg
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Image:cactaceae-cows_tongue.jpg
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Image:cactaceae-golden_barrel.jpg
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Image:cactaceae-mission_cactus.jpg
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Image:cactaceae-mojave_prickly_pear.jpg
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Image:cactaceae-old_man_of_the_andes.jpg
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Image:cactaceae-old_man_of_the_mountains.jpg
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Image:cactaceae-purple_pancake_cactus.jpg
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Image:cactaceae-rabbit_ears-with-rabbit.jpg
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Image:cactaceae-red_barrel_cactus.jpg
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Image:cactaceae-silver_cholla.jpg
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Image:cactaceae-star_cactus.jpg
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Image:cactaceae-teddy_bear_cholla.jpg
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Image:cactaceae-south_american.jpg
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</gallery>
 
<br style="clear:both">
 
<br style="clear:both">
  
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There are different [[W:Taxonomy_of_the_Cactaceae|tribes of cacti]]:
 
There are different [[W:Taxonomy_of_the_Cactaceae|tribes of cacti]]:
 
<gallery>
 
<gallery>
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Image:Azureocereus imperator 3.jpg|Browningia (example: B. hertlingiana)
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Image:Azureocereus imperator 3.jpg|B. hertlingiana (Tribe [[W:Browningia|Browningia]])
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Image:Ariocarpa retusus 1.jpg|Cacteae (example: Ariocarpus retusus)
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Image:Ariocarpa retusus 1.jpg|Ariocarpus retusus (Tribe [[W:Cacteae|Cacteae]])
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Image:Carnegiea gigantea top.jpg|Calymmantheae
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Image:Carnegiea gigantea top.jpg|Calymmanthium (Tribe [[W:Calymmantheae|Calymmantheae]])
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Image:Cereus-peruvians1.jpg|Cereeae (example: Cereus peruvianus)
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Image:Cereus-peruvians1.jpg|Cereus peruvianus (Tribe [[W:Cereeae|Cereeae]])
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Image:Hylocereus undatus.jpg|Hylocereeae (example: Hylocereus undatus)
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Image:Hylocereus undatus.jpg|Hylocereus undatus (Tribe [[W:Hylocereeae|Hylocereeae]])
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Image:Parodia magnifica1.jpg|Notocacteae (example: Parodia magnifica)
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Image:Parodia magnifica1.jpg|Parodia magnifica (Tribe [[W:Notocacteae|Notocacteae]])
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Image:Bergerocactus emoryi1MIBEA.jpg|Pachycereeae (example: Golden cereus)
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Image:Bergerocactus emoryi1MIBEA.jpg|Golden cereus (Tribe [[W:Pachycereeae|Pachycereeae]])
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Image:Schlumbergera gaertneri.JPG|Rhipsalideae (example: Schlumbergera gaertneri)
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Image:Schlumbergera gaertneri.JPG|Schlumbergera gaertneri (Tribe [[W:Rhipsalideae|Rhipsalideae]])
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Image:Denmoza rhodacantha 1.jpg|Trichocereeae (example: D. rhodacantha)
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Image:Denmoza rhodacantha 1.jpg|D. rhodacantha (Tribe [[W:Trichocereeae|Trichocereeae]])
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Image:Austrocylindropuntia subulata0.jpg|Austrocylindropuntieae (example: A. subulata)
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Image:Austrocylindropuntia subulata0.jpg|A. subulata (Tribe [[W:Austrocylindropuntieae|Austrocylindropuntieae]])
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Image:Opuntia brasiliensis2.jpg|Opuntieae (example: Cuija)
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Image:Opuntia brasiliensis2.jpg|Cuija (Tribe [[W:Opuntieae|Opuntieae]])
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Image:Pterocactus kuntzei.jpg|Pterocacteae (example: Pterocactus tuberosus)
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Image:Pterocactus kuntzei.jpg|Pterocactus tuberosus (Tribe [[W:Pterocacteae|Pterocacteae]])
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Image:Puna subterranea.jpg|Tephrocacteae (example: Maihueniopsis subterranea)
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Image:Puna subterranea.jpg|Maihueniopsis subterranea (Tribe [[W:Tephrocacteae|Tephrocacteae]])
 
</gallery>
 
</gallery>
  
 
==References==
 
==References==
 
[[Category:Adventist Youth Honors Answer Book|{{SUBPAGENAME}}]]
 
[[Category:Adventist Youth Honors Answer Book|{{SUBPAGENAME}}]]

Revision as of 04:14, 3 October 2007

Template:Honor header

1. Name the chief characteristics of a cactus.

Areoles - Flowers, branches, spines sprout from these- no other plant has this feature.
Spines - Perhaps the most familiar feature of cacti, spines can vary greatly in appearance, shape, size, and color. Spines are not thorns.
Flowers - Flowers are not unique to cacti, but cacti flowers are unique. Cacti flowers are typically quite spectacular and very complex. Unfortunately this field mark is only helpful, of course, if the plant happens to be blooming.
Leaves - Most cacti do not have leaves, however, some do. Pay special attention to the presence or absence of leaves.
Origin - All cacti are native to the America's and surrounding islands. With one exception - Rhipsalis baccifera. Although, world wide cultivation has made this less helpful for identification.

2. Name three uses of cacti.

Cacti are used for:
1. Decorating - as houseplants, in dry gardens, or, even as a fence.
2. Edible Fruit Producing - such as Prickly Pear, Hylocereus, Dragon fruit.
3. Psychoactive uses - the Peyote, Lophophora williamsii, is a well-known psychoactive agent used by Native Americans in southwestern United States.
4. Host for bugs - the Opuntia is also used as a host for cochineal bugs for the Cochineal dye industry.

3. In what places are cacti the most plentiful? Why?

Cacti are mostly found in extremely arid and hot environments.
The majority of cacti are found in the North and South America as well as in the West Indies.
Why? Cacti are adapted to arid and hot environments.

4. Know and identify from life or pictures 15 species of cacti.

Heh! This is your part. Enjoy!

I took photos of these two. Can you identify them?

Cacti
Davis Mountains


Now go and identify more...

  • Cactaceae-compass barrel.jpg
  • Cactaceae-cows tongue.jpg
  • Cactaceae-golden barrel.jpg
  • Cactaceae-mission cactus.jpg
  • Cactaceae-mojave prickly pear.jpg
  • Cactaceae-old man of the andes.jpg
  • Cactaceae-old man of the mountains.jpg
  • Cactaceae-purple pancake cactus.jpg
  • Cactaceae-rabbit ears-with-rabbit.jpg
  • Cactaceae-red barrel cactus.jpg
  • Cactaceae-silver cholla.jpg
  • Cactaceae-star cactus.jpg
  • Cactaceae-teddy bear cholla.jpg
  • Cactaceae-south american.jpg


5. Photograph, observe or sketch at least 10 species of cacti and classify them or grow at least 3 different species of cacti.

There are different tribes of cacti:

References

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