Marine Plants Algae Review

T or F

1 The holdfasts of seaweeds are analogous to roots because both provide an anchor and absorb nutrients to supply the entire

2 In some seaweeds, leaf-like portions called blades are kept near the sea surface with gas-filled bladders called pneumatocysts.

3 Certain species of the Cholorphyta dominate in environments with wide variations in salinity.

4 The Chlorophyta includes the largest algae, the giant kelps.

No 5

6 The Rhodophyta are by far the most complex group of seaweeds in terms of thallus forms and size range.

7 The most common pattern of reproduction in seaweeds is like that of animals, with a diploid adult thallus and haploid gametes.

8 In some seaweeds, full-grown plants (thalli) can form at both diploid and haploid stages.

9 Sea grasses are closely related to the plants that grow in a typical home lawn.

10 Marine producers of the Kingdom Plantae consist of mosses, conifers, and angiosperms.

11 Sea grasses grow in clusters interconnected with horizontal root-like stems.

12 Salt marsh plants such as cordgrass are fully marine species.

13 Sea grasses, being angiosperms, reproduce with flowers that attract insects.

14 In some mangrove plants, seeds germinate before detaching from the parent tree.

15 What phycocolloid extracts of marine algae having economic value:

16. Prokaryotes are found in the kingdom:

17. In addition to chlorophyll, most blue-green algae contain a bluish pigment called:

18. Blue-green algae a __________cellular organization

19. Blue-green algae form______________ made of calcium carbonate (CaCO₃)

20. Algae are found in marine and fresh _____________

21 Diatoms are enclosed by a__________ made of silica (SiO2)

22. The color of diatoms is due to which of the following pigments:

23. Diatoms reproduce sexually and asexually, reproduce in rapid periods known as_______, and do not reproduce in stages known as auxospores

24. Dinoflagellates: are the dominant group of planktonic primary ___________ in the tropics

25 Dinoflagellates reproduce by simple cell division, may produce blooms known as ____________may bioluminesce

26. Dinoflagellates that live within the tissues of reef corals and other marine animals are called:

27. Which is not true of seaweeds?

their complete body is known as the thallus leaflike, flattened portions of the thallus are known as blades distinct stemlike structure providing support is called the stipestructures that anchor the thallus to the bottom are called the holdfast or rhyzoids

28 .Which unicellular algae is not correctly paired with its features:

29..Seaweeds are also called___________, are eukaryotic and are members of the Kingdom Plantae

30. Green algae are: thought to be the ______of land plants

31. Brown algae includes the group known as the

32. Red algae: contain red pigments called __________are the largest group of algae and may be parasites of other algae

33. Sexual reproduction in seaweeds:

34. Seaweed is harvested and its products are used for all of the following except:

35. Seagrasses release _________, the male gamete, to be carried by water currents

36. Cord grass plants are land plants tolerant to

37. Mangroves: are land plants that can tolerate salt have thick leaves to reduce water loss and have seeds that ________while still attached to the parent tree