×
Log in to StudySoup
Get Full Access to Biology - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Biology - Textbook Survival Guide

Solved: As will be described in detail in Chapter 38, the

Biology | 8th Edition | ISBN: 9780805368444 | Authors: Neil A. Campbell ISBN: 9780805368444 183

Solution for problem 8 Chapter Chapter 30

Biology | 8th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Biology | 8th Edition | ISBN: 9780805368444 | Authors: Neil A. Campbell

Biology | 8th Edition

4 5 1 273 Reviews
26
5
Problem 8

As will be described in detail in Chapter 38, the female gametophyte of angiosperms typically has seven cells, one of which, the central cell, is diploid. After double fertilization, the central cell develops into endosperm, which is triploid. Because all monocots, magnoliids, and eudicots have female gametophytes with seven cells and triploid endosperm, scientists assumed that this was the ancestral state for angiosperms. Consider, however, the following recent discoveries: .... Our understanding of angiosperm phylogeny has changed to that shown in Figure 30.l2b. .... Amborella has eight-celled female gametophytes and triploid endosperm. .... Water lilies and star anise have four-celled female gametophytes and diploid endosperm. (a) Draw a phylogeny of the angiosperms (see Figure 30.12b), incorporating the data given above about the number of cells in female gametophytes and the ploidy of the endosperm. Assume that all of the star anise relatives have four-celled female gametophytes and diploid endosperm. (b) What does your labeled phylogeny suggest about the evolution of the female gametophyte and endosperm in angiosperms?

Step-by-Step Solution:
Step 1 of 3

Notes 6/14 6 classes of nutrients 1. carbs 2. lipids 3. proteins 4. vitamins 5. minerals 6. water define enrichment: adding back nutrients taken away during processing fortification: nutrients added to food supplementation: not associated with food and not regulated by FDA 3 functions of nutrients 1. energy: carb, lipid and protein 2. structure: lipid, protein and minerals 3. regulation: all nutrients...

Step 2 of 3

Chapter Chapter 30, Problem 8 is Solved
Step 3 of 3

Textbook: Biology
Edition: 8
Author: Neil A. Campbell
ISBN: 9780805368444

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

Solved: As will be described in detail in Chapter 38, the

×
Log in to StudySoup
Get Full Access to Biology - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Biology - Textbook Survival Guide
×
Reset your password