Honors Marine Biology October 11, 2012 Module 3: Mangroves Module 4
Jan 19, 2016
Honors Marine Biology
October 11, 2012
Module 3: Mangroves
Module 4
Class Challenge
Quiz
Sara Kane from the Sarasota Bay Estuary Program spoke with our class last week.
Write in complete sentences the significance of this program and 3 additional things that this program has accomplished since its inception in 1989.
Mangroves
Like the salt water marsh plants, Mangroves are salt-tolerant plants.
They cannot tolerate frost and are therefore found in the tropics and sub-tropic areas.
4 Types of Mangroves
1. The White Mangrove
2. The Red Mangrove
3. The Black Mangrove
4. The Buttonwood Mangrove
See Mangrove Videos
http://youtu.be/mp8OVu24BSE
http://youtu.be/Vonk499HgAY
http://youtu.be/atMnKyKcZV8
http://youtu.be/kR6-RUeNrQg http://youtu.be/9SMM7x7qKE4
Marine Invertebrates I
Invertebrates: Animals that do not possess a backbone.
Vertebrates: Animals that possess a backbone.
Sponges
Lab: Diagram of a Sponge
Figure 4.2 page 78
Sponge Body Types
Figure 4.3
Ascon
Sycon
Leucon
Sponge Spicule
Larger and more complex sponges are beg enough to require a form of support. Some have a network of SPICULES made of calcium carbonate or silica.
These form the “skeleton” of the larger sponges, supporting them so they stand upright in the water.
Sponge Classification
In order to classify sponges, a marine biologist often looks at the sponge’s unique spicule shape rather than looking at a sponge’s overall appearance.
Sponges
• Spongin: Web-like skeleton of elastic protein fibers.
• Amoebocytes: Cells within a sponge that produce its skeletal, perform digestion, and cell damage.
• Gemmule: A group of cells surrounded by a shell made of spicules.
• Larva: An immature stage of an animal that appears different from the adult stage.
• Metamorphosis: A complete morphological change from larval to adult form.
Cnidaria
• Also know as coelenterates.
• Contain a coel, a large body cavity.
• Jellyfish, corals, sea aneomones.
Cnidaria
1. Have specialized tissues that perform specific functions.
2. Have the ability to move in a more intricate way than a sponge.
Cnidaria have a form of Symmetry
The three body types:
1. Spherical symmetry: A body form in which any cut through the organism’s center results in identical halves.
2. Radial Symmetry: A body form in which any longitudinal cut (along the length) through the organism’s central axis results in identical halves.
3. Bilateral Symmetry: A body form in which only one longitudinal cut through the organism’s center results in identical halves.
CnidarianCnidarians display radial symmetry, having
no true head, front, or back.
The only differentiation in these animals is that they have a side with a mouth – an oral side – and an opposite side – an aboral side.
Organisms in this phylum have one of two basic body forms: Polyp or Medusa. (figure 4.6)
Life Cycle of Cnidarians
See figure 4.7
HomeworkRead pages 87 – 93
Answer OYO questions 4.5 – 4.11
Study Guide Questions: define m – q
12 – 22.
Finish Lab books
Quiz: Know the 3 species of Mangroves.
What is a Spicula on a sponge?
Define a color cell on a sponge.
Class Challenge: