Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 28, Problem 5TYU
In a life cycle with alternation of generations, multicellular haploid forms alternate with
(A) unicellular haploid forms.
(B) unicellular diploid forms.
(C) multicellular haploid forms.
(D) multicellular diploid forms.
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Students have asked these similar questions
Plasmogamy is the fusion of(a) two haploid cells including their nuclei.(b) two haploid cells without nuclear fusion.(c) sperm and egg.(d) sperm and two polar nuclei.
Please try to break the solutions into as many steps as practically possible and the steps should come one by one and they should be short and crisp and plagiarism-free.
In embryophytes, especially spermatophya, what is the difference between a "sporocyte" (e.g., megasporocyte) and the actual spore (e.g., megaspore)?
a) Meiosis: Megasporocyte is still diploid, megaspore haploid
b) Mitosis, number of nuclei: Megaspore has eight cell nuclei, megasporocyte only one
c) Cytokinesis: Megasporocyte has only one cell, Megaspore can have several (as endosporic gametophyte).
d) None: the two terms are synonymous.
e) Meiosis: Megaspore is still diploid, megasporocyte haploid
The process by which haploid cells are produced from diploid cells is called
A( sexual reproduction.
B) meiosis
C) gameoto reduction
D) mitosis
Chapter 28 Solutions
Campbell Biology
Ch. 28.1 - Cite at least four examples of structural and...Ch. 28.1 - Summarize the role of endosymbiosis in eukaryotic...Ch. 28.1 - Prob. 3CCCh. 28.2 - Why do some biologists describe the mitochondria...Ch. 28.2 - WHAT IF? DNA sequence data for a diplomonad, a...Ch. 28.3 - Explain why forams have such a well-preserved...Ch. 28.3 - WHAT IF? Would you expect the plastid DNA of...Ch. 28.3 - Prob. 3CCCh. 28.3 - Prob. 4CCCh. 28.4 - Contrast red algae and brown algae.
Ch. 28.4 - Why is it accurate to say that Ulva is truly...Ch. 28.4 - Prob. 3CCCh. 28.5 - Contrast the pseudopodia of amoebozoans and...Ch. 28.5 - Prob. 2CCCh. 28.5 - Prob. 3CCCh. 28.6 - Justify the claim that photosynthetic protists are...Ch. 28.6 - Prob. 2CCCh. 28.6 - WHAT IF? High water temperatures and pollution...Ch. 28.6 - MAKE CONNECTIONS The bacterium Wolbachia is a...Ch. 28 - Describe similarities and differences between...Ch. 28 - What evidence indicates that the excavates form a...Ch. 28 - Prob. 28.3CRCh. 28 - On what basis do systematists place plants in the...Ch. 28 - Describe a key feature for each of the main...Ch. 28 - Prob. 28.6CRCh. 28 - Plastids that are Surrounded by more than two...Ch. 28 - Biologists think that endosymbiosis gave rise to...Ch. 28 - Prob. 3TYUCh. 28 - According to the phylogeny presented in this...Ch. 28 - In a life cycle with alternation of generations,...Ch. 28 - Based on the phylogenetic tree in Figure 28.2,...Ch. 28 - Prob. 7TYUCh. 28 - SCIENTIFIC INQUIRY Applying the If then logic of...Ch. 28 - WRITE ABOUT A THEME: INTERACTIONS Organisms...Ch. 28 - SYNTHESIZE YOUR KNOWLEDGE This micrograph show's a...
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- Why must the life cycle of sexually reproducing species alternate between haploid and diploid stages? A) Mitosis must occur at some point in the life cycle to prevent a doubling of chromosomes in each generation. B) Meiosis must occur at some point in the life cycle to prevent a doubling of chromosomes in each generation. C) Mitosis must occur at some point in the life cycle to prevent a reduction of chromosomes in each generation. D) Meiosis must occur at some point in the life cycle to prevent a reduction of chromosomes in each generation.arrow_forwardIdentify the stage of meiosis diploid cells of this species have 3 homologous pairs of chromosomes a b and ca) prophase b) telophase c) anaphase d) prophase 2 e) telophase 2Activation of the adrenal cortex produce androgens is called adrenarche ? True/falseHow does photosynthesis relate to cellular aerobic respiration?arrow_forwardFor every one cell that goes through meiosis I and meiosis I| a)four haploid sperm or four haploid eggs are produced. b)four haploid sperm or one haploid egg are produced. c)four haploid sperm or one diploid egg are produced. d)two diploid sperm or two diploid eggs are producedarrow_forward
- What is the major difference between mitosis and meiosis I in a diploid organism? A) Sister chromatids separate in mitosis; homologous pairs of chromosomes separate in meiosis I. B) Sister chromatids separate in mitosis; homologous pairs of chromosomes separate in meiosis II. C) DNA replication takes place prior to mitosis, but not before meiosis I. D) Only meiosis I results in daughter cells that contain identical genetic information.arrow_forwardWhich of the following are differences between mitosis and meiosis I? CHOOSE ALL THAT APPLY. A) Crossing over occurs during meiosis I but not during mitosis B) DNA replication takes place prior to mitosis, but not before meiosis I C) Sister chromatids separate in mitosis, and homologs separate in meiosis I D) Only meiosis I results in daughter cells that contain identical genetic information E) Meiosis I results in two daughter cells, while mitosis results in four daughter cellsarrow_forwardIf meiosis of a diploid organism produces haploid cells, then how is a diploid offspring generated? a) Crossing over between two haploid gametes b) DNA replication in haploid gametes c) fertilization involving two haploid gametes d) Independent assortment of haploid gametesarrow_forward
- Unlike mitosis, meiosis in male mammals results in the formation of a) one haploid gamete b) three diploid gametes c) four diploid gametes d) four haploid gametes Please I need a surely answer and a quicker responsearrow_forwardHow many sets of chromosome do each of the following types of cell have? a) Diploid cell b) Haploid cell c). polyploid cell d) Gametesarrow_forwardWhich statements are true about meiosis? **Select 2 choice(s)** a) It increases the number of chromosomes. b)It duplicates the number of chromosomes by 2. c)It occurs in an organism's reproductive organs. d)It reduces the number of chromosomes by half. e)It occurs when a single haploid cell divides twice. f)It results in the formation of multiple diploid cells. Please I need a surely answer and a quicker responsearrow_forward
- In prophase II of meiosis, each daughter cell is _____. A) diploid, and the chromosomes are each composed of a single chromatid B) diploid, and the chromosomes are each composed of two chromatids C) haploid, and the chromosomes are each composed of a single chromatid D) haploid, and the chromosomes are each composed of two chromatidsarrow_forwardWhich statement does not accurately describe what occurs during the process of meiosis? A) All stages of meiosis follow DNA replication. B) Meiosis produces gametes with the haploid chromosome number. C) Meiosis produces four identical gametes, either egg or sperm. D) Genetic variation among sexually reproducing organisms is enhanced by meiosis. Not Gradedarrow_forwardWhat is happening during this phase of meiosis? A.)Mitosis is complete and 4 diploid daughter cells have been produced. B.)Telophase II C.)Meiosis II is complete and 4 haploid daughter cells have been produced. D.)Meiosis I is complete and 4 diploid daughter cells have been produced E.)Meiosis II is complete and 4 diploid daughter cells have been producedarrow_forward
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