Question 15 5 points Which of the following do earlyevolved

Question 15 (5 points)

Which of the following do early-evolved land plants NOT share with their aquatic ancestors?

Question 15 options:

Cell walls

sperm ultrastructure, haploid dominant lifecycle

waxy cuticle

Photosynthetic pigments (e.g. Chlorophyll, carotenoids)

In the life cycle of mosses, which of the following is true?

Question 16 options:

The gametophyte is microscopic and dependent on the sprorophyte

The gametophyte and sporophyte are both free-living multicellular organisms

The sporophytic generation is very noticable, is green, and performs photosynthesis

The sporophytic generation grows out of gametophytic tissue and is dependent on the green gametophyte for nutrition

Question 19 (1 point)

Which of the following group of adaptations are likely to be found in plants living in tropical rainforests?

Question 19 options:

Reduced leaves, succulent leaves, short-lived annuals

Large spreading leaves, epiphyitc habit, lianas

stunted small plants with perrenial habits

grasses, thorny trees, epiphytic habit

Question 20 (1 point)

What is the best reason that tundra ecosystems do not support large trees

Question 20 options:

It is too cold

The soils are too rich with nutrients while trees compete better in poor soils

There is only a shallow layer of thawed soil to support roots

The carbon they need is locked up in permafrost so trees cannot get enough carbon

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Solution

Answer 15:- Option 2

Explanation :- The sperm ultrastructure, haploid dominant life cycle are the charachters that land plants do not share with their aquatic ancestors.

16:-Option 3

Explanation :- The sporophytic generation is very noticeable is green and performs photosynthesis.

19:- Option 2

Explanation :- Tropical rainforest plants have large spreading leaves, epiphytic habitat, lianas.

20:-Option 3

Explanation :-There is only a shallow layer of thawed soil to support roots. Also perfafrost does not allow trees to grow