Concept explainers
Introduction :
Besides having some seed protection, fruits also help to spread seeds. Dispersal of seeds far from parent plant enhances offspring's success rate. If a lot of plants grow in one place, there is competition for nutrients from light, water and soil. Seeds that sprout alongside parent plants and other offspring fight for certain
Answer to Problem 6STP
Correct answer :
The correct answer is option (D) wind
Explanation of Solution
Explanation/justification for the correct answer :
Option (D) wind. The wind-dispersed seed is delicate and may have wing-like appendages which enable the wind to carry them. Few have a parachute-like mechanism that can hold them afloat. So, the correct answer is option (D).
Explanation for incorrect answer :
Option (A) animals. Animals consume seeds, and the non-digested seeds are excreted some distance away in their droppings. Many species, such as squirrels, bury seed-bearing fruits for later use; if the squirrel cannot reach its fruit stash, even if conditions are favorable, the seeds will germinate. So, this is an incorrect answer.
Option (B) gravity. Seeds dispersed by gravity have a hard outer shell which can roll some distance from the parent plant. So, this is an incorrect answer.
Option (C) water. Water-dispersed seeds are found in light and buoyant allowing them the ability to float. So, this is an incorrect answer.
Chapter 26 Solutions
Biology Illinois Edition (Glencoe Science)
Additional Science Textbook Solutions
Campbell Biology in Focus
Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
Concepts of Genetics (11th Edition)
Biological Science (6th Edition)
Becker's World of the Cell (9th Edition)
Campbell Essential Biology (7th Edition)
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education