Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 36, Problem 11PIAT
Summary Introduction
To review:
The effect of diving ants on the overall growth of the pitcher plants.
Introduction:
The pitcher plant (Nepenthes bicalcarata) is carnivorous and exhibits a unique relationship with ant species (Camponotus schmitzi). The association or interaction between the two species living together usually benefits both the species by providing nutritional benefits and has positive impacts on the growth of Camponotus schmitzi and Nepenthes bicalcarata.
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In spadefoot toads there are two forms of the tadpoles: omnivores and carnivores. Environmental factors such as population density, oxygen concentration, and availability of food determine which form any particular tadpole takes. Consider the situation below.
A single pair of toads produces a fertilized group of eggs in a pond. The pond dries a bit creating two separate ponds, one is deep and the other is shallow. All the tadpoles in the deep pond become omnivores and all the tadpoles in the deep pond become carnivores. There is a heavy rain and the ponds become connected again and the two groups of tadpoles mix together. The carnivores eat most of the omnivores and more of the carnivores become adult toads
This is an example of
Group of answer choices
A. natural selection and evolution
B. evolution only
C. natural selection only
Invertebrates enhance the rate of decomposition of leaf litter by
increasing the surface area by consuming pieces of the leaves.
adding their fecal material to the leaves on the forest floor.
burying the leaves within the upper soil layers.
adding their digestive enzymes to the leaves.
Under what circumstances should natural selection favor possession of a holometabolous life cycle over an ame-tabolous or hemimetabolous life cycle? Consider food availability, spe-cialized body parts, and dispersal ability in your answer.
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