Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 4FTB
The sperm of early land plants had to reach the egg by __________, limiting them to __________ environments. An important adaptation of plants to dry land was the evolution of ________, which enclosed sperm in a drought-resistant coat.
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Chapter 18 Solutions
Biology: Life on Earth (11th Edition)
Ch. 18 - 1. Almost all of the oxygen gas in today’s...Ch. 18 - Extinction a. generally does not occur except...Ch. 18 - 3. In the endosymbiotic origin of the...Ch. 18 - 4. Which of the following does not list...Ch. 18 - Prob. 5MCCh. 18 - 1. Because there was no oxygen in the earliest...Ch. 18 - 2. The molecule ________ became a candidate for...Ch. 18 - 3. Complex cells that contain a nucleus and other...Ch. 18 - 4. The sperm of early land plants had to reach the...Ch. 18 - 5. Early plants that protected their seeds within...
Ch. 18 - Prob. 6FTBCh. 18 - Amphibians gave rise to ____________, which had...Ch. 18 - 1. What is the evidence that life might have...Ch. 18 - Prob. 2RQCh. 18 - 3. Explain the endosymbiont hypothesis for the...Ch. 18 - 4. Name two advantages of multicellularity for...Ch. 18 - What advantages and disadvantages would...Ch. 18 - 6. Outline the major adaptations that emerged...Ch. 18 - Outline the evolution of humans from early...Ch. 18 - Extinctions have occurred throughout the history...Ch. 18 - In biological terms, what do you think was the...
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- Which was NOT a "fallback food" for the australopiths: A) roots B) berries C) tubers D) stemsarrow_forwardWhich adaptation to land is present in the most plant species?a. Pollen c. Phloemb. Seeds d. Fruitsarrow_forwardWhich reproductive structures would be found in a seedless, nonvascular plant? A. ovules B. archegonia C. cones D. megasporangiaarrow_forward
- In bryophytes, eggs are fertilized in a chamber on the ________ and a zygote develops into a _______. a. sporophyte; gametophyte b. gametophyte; sporophyte c. sorus; conearrow_forwardMoss is an example of which type of plant? a. haplontic plant b. vascular plant c. diplontic plant d. seed plantarrow_forwardStudy the relationship between first two words and suggest a suitable word for fourth place. (a) Male flower : Stamens :: Female Flower : ............................. (b) Birds : oviparous :: Primates : ............................. (c) Chlamydomonas : Zoospores :: Penicilium : ............................. (d) Ginger : Rhizome :: Agave : .............................arrow_forward
- Why would terrestrial existence be of an advantage to plants? What is the advantage for plants of having alternation of generations?arrow_forwardMoving evolutionarily through plant groups, from the nonvascular plants to the flowering plants, the gametophyte generation becomes more Explain how this pattern coincides with early plants’ move from aquatic, or at least moist, to terrestrial habitats.arrow_forwardWhich morphological innovation is associated with plants being able to blanket dry terrestrial environments for the first time? A. Stomata B. Flowers C. Chloroplasts D. Seedsarrow_forward
- In your own words - grasses are flowering plants but many do not have colorful flowers. What mechanism do they use to spread their pollenarrow_forwardAll members of the Plant Kingdom have a close ancestor "the Charophytes" and from aquatic habitat. Why would a terrestrial existence be an advantage for a plant? Why didn't they just stay in the water? How terrestrial plants encountered the challenges of colonizing on land successfully?arrow_forwardSuppose an efficient conducting system evolved in a moss that could transport water and other materials as high as a tall tree. Which of the following statements about “trees” of such a species would not be true? (A) Spore dispersal distances would probably increase. (B) Females could produce only one archegonium. (C) Unless its body parts were strengthened, such a “tree” would probably flop over. (D) Individuals would probably compete more effectively for access to light.arrow_forward
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