P r e a n d p o s t Pre and post t e s t test

University of Puerto Rico

Mayagüez Campus

Sea Grant Program

Name: _______________________________ Date: ____________________________

Teacher: ______________________________ Grade-Group: ______________________

Test: “Seagrass meadows”

I. Multiple choice. Carefully read each question and choose the best answer. Circle the corresponding letter and write it in the space provided. (8 points, 1 pt. each) a. marine algae b. sea grasses c. mangroves d. corals a. Educating the public about this system’s importance. b. Using contour farming to avoid erosion. c. Excessively discharging sediments. d. Use anchoring buoys.

_______1. Plants that live submerged in the sea and feature leaves, stems, flowers, and fruit.

_______2. Which of the following photos show a sample of turtle grass?

_______3. Which of the following activities poses a threat to the seagrass meadows ecosystem?

_______4. The first plants on the planet were: a. marine algae b. phytoplankton c. seagrasses d. mangroves

_______5. Two of the necessary conditions a seagrass needs to grow and develop are: a. warm water and low turbidity b. temperate climate and very deep waters c. solar light and high surf d. cold temperature and low salinity

_______6. A similarity between marine algae and seagrass is that both: a. have roots. b. have laminae. c. perform photosynthesis. d. have flowers. a. marine algae b. seagrasses c. mangroves d. corals a. Provide food and shelter to many organisms. b. Allow water temperatures to remain warm. c. Produce a lot of turbidity in the water. d. Provoke excessive marine algae proliferation.

_______7. Non-vascular plants that absorb nutrients from the water through diffusion.

_______8. Which of the following statements represents an important facet of seagrasses?

II. Questions.

Carefully read each question and answer it in the spaces provided. (20 points)

1. Closely observe the photos presented below and write if it is a seagrass or a marine algae in the spaces beneath each photo. Then, write the names of the labeled parts in the spaces with the corresponding letters. Each part is labeled with a different letter. (8 pts., 1 pt. each) a.Produces flowers and fruits_________________________ b.Do not have roots _________________________ c.Live submerged underwater_________________________ d.Perform photosynthesis _________________________ e.Can usually be found inshallow waters_________________________ f.Act as sediment stabilizers _________________________

2.The following image shows the order in which the different types of seagrasses (generally) grow, on a gradient from deeper to shallower. In the drawing, write the common name for each seagrass type according to its zonation. (4 pts.)

3.Determine which of the following characteristics correspond to seagrasses, marine algae, or both. (6 pts.)

4. In the following map of the Puerto Rico archipelago, indicate where seagrasses can be found. (2 pts.)