Marine flowers Flashcards
What’s fragmentation ?
Asexual reproduction in which the thallus breaks into pieces which produce new algae
What’s drift algae ?
Huge accumulation of seaweeds formed by fragmentation
How are haploid spores formed ?
Formed in an area of the thallus through meiosis
Can seaweed sexually reproduce ?
Yes
What happens in seaweed sexual reproduction ?
Gametes fuse to form a diploid zygote
What stage is gametophyte (haploid ) ?
Stage of life cycle that produces gametes
What’s gametagonia ?
Structures where gametes are typically produced
What’s alternation of generations ?
The possession of 2 or more separate multicellular stages in succession
Seaweed have what two types of reproduction ?
Asexual and sexual
What does phloem do ?
Vessel that moves nutrients and water down the plant
What does xylem do ?
Vessel provides support
Moves water and minerals up the plant
Why do plants need vascular tissue ?
Allows plants to have larger movements allowing them to evolve to being larger
How do seed plants reproduce ?
Use seeds
What is a seed ?
Structure containing embryonic plant and supply of nutrients surrounded by a protective outer layer
How many types of seed plants are there ?
2 types
What’s re the two types of seed plants ?
Canifers and flowering plants
What type of seed plant is found as a marine plant ?
Flowering plants ( bear seeds in fruit )
Are marine plants salt tolerant ?
Yes
Marine plants are ____ .
Halophytes
What structure do marine plants have, what do they do?
Stems ( internode separated by nodes )
Roots ( anchors plant, develops action with bacteria to use nitrogen )
Leaves ( from vertical stem )
What’s the horizontal stem called ?
Rizomes
Marine plants are found how deep ?
90m
Does sea grass flower ?
Yes, pollen moved by waves
Sea grass communities are ____ and _____
Complex and essential
Sea grass is important in ?
Coral reefs
What types of fish use sea grass communities ?
Young baby fishes
What affects the productivity of sea grass communities ?
- extraction nutrients from the mud
- the algae
What grows on sea grass leaves ?
Algae and invertebrates
How do invertebrates use sea grass ?
Scratch against it for nutrients
What happens when sea grass leaves die ?
Bacteria breaks it down
Carbon and nitrogen goes to the ecosystems
Does the sea grass community have outside input ?
Yes
What do shark do in sea grass beds ?
Eat invertebrates
Where’s turtle grass found ?
North Carolina
What grows on sea grass ?
Epiphytes
What fish hide in sea grass ?
Pipefish
What organisms feed on sea grass ?
Green sea turtles
Manatee
Dugong eats what?
Sea grass
Does sea grass get destroyed by pray ?
No once eaten it can grow back as long as roots are not pulled out
How longs the Indian river lagoon ?
250km in length
How does transport take place in sea grass ?
Gases travel using aerenchyne. This is a gas filled tissue with spaces / pores which prevent breakage. Provide buoyancy
Name a marine plant called s____ _____
Salt marshe
What effects distribution of salt marshe plants ?
Controlled by small changes in elevation as This controls how long the plant is in salt water when the tide travels in
What does small elevation change affect ?
Which species of grass predominates
