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Marine Biology > Marine flowers > Flashcards

Marine flowers Flashcards

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1
Q

What’s fragmentation ?

A

Asexual reproduction in which the thallus breaks into pieces which produce new algae

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2
Q

What’s drift algae ?

A

Huge accumulation of seaweeds formed by fragmentation

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3
Q

How are haploid spores formed ?

A

Formed in an area of the thallus through meiosis

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4
Q

Can seaweed sexually reproduce ?

A

Yes

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5
Q

What happens in seaweed sexual reproduction ?

A

Gametes fuse to form a diploid zygote

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6
Q

What stage is gametophyte (haploid ) ?

A

Stage of life cycle that produces gametes

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7
Q

What’s gametagonia ?

A

Structures where gametes are typically produced

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8
Q

What’s alternation of generations ?

A

The possession of 2 or more separate multicellular stages in succession

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9
Q

Seaweed have what two types of reproduction ?

A

Asexual and sexual

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10
Q

What does phloem do ?

A

Vessel that moves nutrients and water down the plant

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11
Q

What does xylem do ?

A

Vessel provides support

Moves water and minerals up the plant

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12
Q

Why do plants need vascular tissue ?

A

Allows plants to have larger movements allowing them to evolve to being larger

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13
Q

How do seed plants reproduce ?

A

Use seeds

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14
Q

What is a seed ?

A

Structure containing embryonic plant and supply of nutrients surrounded by a protective outer layer

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15
Q

How many types of seed plants are there ?

A

2 types

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16
Q

What’s re the two types of seed plants ?

A

Canifers and flowering plants

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17
Q

What type of seed plant is found as a marine plant ?

A

Flowering plants ( bear seeds in fruit )

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18
Q

Are marine plants salt tolerant ?

A

Yes

19
Q

Marine plants are ____ .

A

Halophytes

20
Q

What structure do marine plants have, what do they do?

A

Stems ( internode separated by nodes )
Roots ( anchors plant, develops action with bacteria to use nitrogen )
Leaves ( from vertical stem )

21
Q

What’s the horizontal stem called ?

A

Rizomes

22
Q

Marine plants are found how deep ?

A

90m

23
Q

Does sea grass flower ?

A

Yes, pollen moved by waves

24
Q

Sea grass communities are ____ and _____

A

Complex and essential

25
Q

Sea grass is important in ?

A

Coral reefs

26
Q

What types of fish use sea grass communities ?

A

Young baby fishes

27
Q

What affects the productivity of sea grass communities ?

A
  • extraction nutrients from the mud

- the algae

28
Q

What grows on sea grass leaves ?

A

Algae and invertebrates

29
Q

How do invertebrates use sea grass ?

A

Scratch against it for nutrients

30
Q

What happens when sea grass leaves die ?

A

Bacteria breaks it down

Carbon and nitrogen goes to the ecosystems

31
Q

Does the sea grass community have outside input ?

A

Yes

32
Q

What do shark do in sea grass beds ?

A

Eat invertebrates

33
Q

Where’s turtle grass found ?

A

North Carolina

34
Q

What grows on sea grass ?

A

Epiphytes

35
Q

What fish hide in sea grass ?

A

Pipefish

36
Q

What organisms feed on sea grass ?

A

Green sea turtles

Manatee

37
Q

Dugong eats what?

A

Sea grass

38
Q

Does sea grass get destroyed by pray ?

A

No once eaten it can grow back as long as roots are not pulled out

39
Q

How longs the Indian river lagoon ?

A

250km in length

40
Q

How does transport take place in sea grass ?

A

Gases travel using aerenchyne. This is a gas filled tissue with spaces / pores which prevent breakage. Provide buoyancy

41
Q

Name a marine plant called s____ _____

A

Salt marshe

42
Q

What effects distribution of salt marshe plants ?

A

Controlled by small changes in elevation as This controls how long the plant is in salt water when the tide travels in

43
Q

What does small elevation change affect ?

A

Which species of grass predominates

Marine Biology (5 decks)

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