Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 26, Problem 10TYU
SYNTHESIZE YOUR KNOWLEDGE
These stomata are from the leaf of a common horsetail Describe how stomata and other adaptations facilitated life on land and ultimately led to the formation of the first forests.
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were needed in land plants to allow for gas exchange because the
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created an impermeable barrier on the outside of land plants' structures.
Gametangia
Cuticle
Stomata
Xylem
What is the advantage of having more stomata on the lower portion of the leaf rather than on the upper portion? Was this true for the monocot leaf as well? What conclusions about stomata placement can you make from these observations?
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Chapter 26 Solutions
Campbell Biology in Focus
Ch. 26.1 - Why do researchers identify charophytes rather...Ch. 26.1 - Prob. 2CCCh. 26.1 - Prob. 3CCCh. 26.1 - WHAT IF? What would the human life cycle be like...Ch. 26.2 - Prob. 1CCCh. 26.2 - Describe the importance of mycorrhizae, both today...Ch. 26.2 - MAKE CONNECTIONS Review Figures 8 .3 and 8.5. If a...Ch. 26.3 - Prob. 1CCCh. 26.3 - Prob. 2CCCh. 26.3 - MAKE CONNECTIONS Monilophytes and seed plants both...
Ch. 26.4 - What features not present in seedless plants have...Ch. 26.4 - Explain why Darwin called the origin of...Ch. 26.4 - MAKE CONNECTIONS Suppose the Bennettitales and...Ch. 26.5 - Prob. 1CCCh. 26.5 - Prob. 2CCCh. 26.5 - MAKE CONNECTIONS Figure 1.9 illustrates the...Ch. 26.5 - Prob. 4CCCh. 26 - Prob. 1TYUCh. 26 - Which of the following characteristics of plants...Ch. 26 - Prob. 3TYUCh. 26 - Prob. 4TYUCh. 26 - Prob. 5TYUCh. 26 - DRAW IT Use the letters a-d to label where on the...Ch. 26 - SCIENTIFIC INQUIRY INTERPRET THE DATA The grass...Ch. 26 - FOCUS ON EVOLUTION The history of life has been...Ch. 26 - FOCUS ON INTERACTIONS Giant lycophyte trees of...Ch. 26 - SYNTHESIZE YOUR KNOWLEDGE These stomata are from...
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- Pines and other plants that grow in very cold climates have sunken stomata just like the plants of the desert, yet the annual precipitation where they grow may be very abundant. Is there any advantage to their having such a modification?arrow_forwardWelwitschia is a genus of plant that lives in the Namib andMossamedes Deserts in Africa. Annual rainfall averages only2.5 cm (1 inch) per year. Welwitschia plants contain a large numberof stomata (22,000 per cm2), which remain closed most of the time.Can you suggest how a large number of stomata would be beneficialto these desert plants?arrow_forwardWhy would it be necessary for an evolutionary line to develop stomata and guard cells before it developed an extremely impervious cuticle? Why must vascular tissues precede the evolution of roots and active apical meristems?arrow_forward
- SCIENTIFIC INQUIRY Grasslands typically do not flourishwhen large herbivores are removed. Instead, grasslands arereplaced by broad-leaved herbaceous eudicots, shrubs, andtrees. Based on your knowledge of the structure and growthhabits of monocots versus eudicots, suggest a reason whyarrow_forwardYou should have found more stomata on the lower portion of the eudicot leaf. What is the advantage of having more stomata on the lower portion of the leaf rather than on the upper portion? Was this true for the monocot leaf as well? What conclusions about stomata placement can you make from these observations? MacBook Pro Q Search or enter address # $ % & 2 3 4 W Earrow_forwardKindly provide 2 examples plants having "adaptations for cladophyll" including (i) mechanical support (ii) transportation or root materials (iii) production of new plantsarrow_forward
- It must be difficult for secondary growth to arise by evolution. How many times has it evolved in the 420 million years that vascular plants have been in existence? How many of those have become extinct?arrow_forwardWhat would be the appearance of secondary tissue in trees growing in regions of the planet without clearly defined seasons?arrow_forwardPlease type the answer to all parts of this question Answer the following question about the Quiescent Center (QC) of the root meristem Quartet model - Orthologs - Microsporangium - Staminode - Self-incompatibility (SI) - Aggregate vs. multiple fruits -arrow_forward
- Stem of sub-merged hydrophytes is soft and weak because of (a) the absence of phloem (b) the absence of stomata (c) the absence of xylem (d) feebly developed supporting tissue and xylemarrow_forwardStomata likely evolved as a solution to which of the following land plant problems? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b C d e Threats from predators. Lack of nutrients. Lack of water. The pull of gravity. Excess UV radiation.arrow_forwardA botanist discovers a new species of plant in a tropical rain forest. After observing its anatomy and life cycle, he notes the following characteristics: 1. Sperm contained in pollen grains, 2. Sporophyte dominant, 3. Seeds contained in fruits. 4. Xylem with tracheids, Mosses Green Algae Ferns Pines/gymnosperms Flowering plants/angiospermsarrow_forward
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