Chapter 33

Question 1

A flattened photosynthetic structure produced by some bryophytes.

Answer 1

thallus

Question 2

A plant that grows high in the canopy of other plants, or on branches or trunks of trees, without contact with the soil.

Answer 2

epiphyte

Question 3

Wetland in which dead organic matter accumulates.

Answer 3

peat bog

Question 4

Small unit of the photosynthetic surface on fern leaves; also, the external structure of mammalian ears that enhance the reception of sound waves contacting the ear.

Answer 4

pinna

Question 5

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Answer 5

Green algae

Question 6

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Answer 6

Bryophyte

Question 7

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Answer 7

Gymnosperm

Question 8

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Answer 8

Angiosperm

Question 9

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Answer 9

synapomorphy

Question 10

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Answer 10

sporophyte

Question 11

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Answer 11

gametophyte

Question 12

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Answer 12

carpel

Question 13

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Answer 13

stamen

Question 14

What is/are the main differences between the major plant groups? What are the differences in their life cycles? When did these differences evolve? Why is it difficult to give an apomorphy for the “Bryophytes?”

Answer 14

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Question 15

What is the prominence of different vascular plants through time? (see Fig. 33.2)

Answer 15

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Question 16

Vascular tissue in plants is considered a key innovation. Why? What were some of the impacts of the evolution of this trait on plants or other organisms?

Answer 16

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Question 17

What is a seed and why is having seeds often adaptive?

Answer 17

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Question 18

What are some of the likely reasons behind the enormous diversity of angiosperms? In other words: why are there so many species of angiosperms?

Answer 18

Cross pollination to create new species of plants and pollination is easiest way for plants to grow