Question 1

In flowering plants,a mature male gametophyte contains

Accepted Answer

A) two haploid gametes and a diploid pollen grain. 
B) a generative cell and a tube cell. 
C) two sperm nuclei and one tube cell nucleus. 
D) two haploid microspores. 
A) two haploid gametes and a diploid pollen grain. 
B) a generative cell and a tube cell. 
C) two sperm nuclei and one tube cell nucleus. 
D) two haploid microspores. C

Question 2

The primary function of the integument of an ovule is to

Accepted Answer

A) protect against animal predation. 
B) ensure double fertilization. 
C) form a seed coat. 
D) direct development of the endosperm. 
A) protect against animal predation. 
B) ensure double fertilization. 
C) form a seed coat. 
D) direct development of the endosperm. C

Question 3

At the end of meiosis (without cytokinesis),a diploid cell in a dicot flower ovule produce

Accepted Answer

A) four unidentical haploid cells. 
B) four unidentical diploid nuclei. 
C) two identical cells. 
D) four unidentical haploid nuclei. 
A) four unidentical haploid cells. 
B) four unidentical diploid nuclei. 
C) two identical cells. 
D) four unidentical haploid nuclei. D

Question 4

The three characteristics of all angiosperms are

Accepted Answer

A) tap root,flowers,and fruits. 
B) flowers,double fertilization,and fruits. 
C) tap roots,adventitious roots,and xylem vessels. 
D) double fertilization,seeds,and fruits. 
A) tap root,flowers,and fruits. 
B) flowers,double fertilization,and fruits. 
C) tap roots,adventitious roots,and xylem vessels. 
D) double fertilization,seeds,and fruits.

Question 5

Here is the ABC hypothesis of the impact of genes A,B,and C on floral part development:
i."A" genes are switched on in the two outer whorls (sepals and petals).
ii."B" genes are switched on in the two middle whorls (petals and stamens).
iii."C" genes are switched on in the inner two whorls (stamens and carpels).
Which of these genes are active for petals?

Accepted Answer

A) i 
B) i and ii 
C) i and iii 
D) iii and iv 
A) i 
B) i and ii 
C) i and iii 
D) iii and iv

Question 6

The ________ is (are)the first plant organ(s)that emerge(s)during the process of seed germination.

Accepted Answer

A) shoot 
B) root 
C) leaves 
D) cotyledons 
A) shoot 
B) root 
C) leaves 
D) cotyledons

Question 7

Which of the following events suggests there is a change in the egg cell membrane after penetration by a sperm?

Accepted Answer

A) The pollen tube grows away from the egg toward the polar nuclei. 
B) The Ca2+ concentration increases in the cytoplasm of the egg. 
C) The egg plasmolyzes. 
D) Double fertilization occurs. 
A) The pollen tube grows away from the egg toward the polar nuclei. 
B) The Ca2+ concentration increases in the cytoplasm of the egg. 
C) The egg plasmolyzes. 
D) Double fertilization occurs.

Question 8

When a diploid cell in the ovule develops into a seed without sexual reproduction,it is referred to as

Accepted Answer

A) apomixis. 
B) asexual reproduction. 
C) cloning. 
D) meiosis. 
A) apomixis. 
B) asexual reproduction. 
C) cloning. 
D) meiosis.

Question 9

Which of the following is a multiple fruit?

Accepted Answer

A) apple 
B) pineapple 
C) raspberry 
D) pea 
A) apple 
B) pineapple 
C) raspberry 
D) pea

Question 10

How many times does the surviving megaspore divide to produce eight haploid nuclei?

Accepted Answer

A) 2 with cytokinesis 
B) 3 without cytokinesis 
C) 3 with cytokinesis 
D) 2 without cytokinesis 
A) 2 with cytokinesis 
B) 3 without cytokinesis 
C) 3 with cytokinesis 
D) 2 without cytokinesis

Question 11

Three mitotic divisions within the female gametophyte of a flowering plant will produce

Accepted Answer

A) three antipodal cells,two polar nuclei,one egg,and two synergids. 
B) the triple fusion nucleus. 
C) three pollen grains. 
D) two antipodal cells,two polar nuclei,two eggs,and two synergids. 
A) three antipodal cells,two polar nuclei,one egg,and two synergids. 
B) the triple fusion nucleus. 
C) three pollen grains. 
D) two antipodal cells,two polar nuclei,two eggs,and two synergids.

Question 12

At the conclusion of meiosis in plants,the end products are always four haploid

Accepted Answer

A) spores. 
B) eggs. 
C) sperm. 
D) seeds. 
A) spores. 
B) eggs. 
C) sperm. 
D) seeds.

Question 13

The number of megaspores that survive in each ovule after meiosis in megasporocyte is

Accepted Answer

A) 1. 
B) 2. 
C) 3. 
D) 4. 
A) 1. 
B) 2. 
C) 3. 
D) 4.

Question 14

The technique of plant cross breeding facilitates plant breeders to

Accepted Answer

A) produce crops with desirable traits. 
B) reduce the vigor of crops. 
C) reduce the yield and quality of crops. 
D) increase the susceptibility for diseases. 
A) produce crops with desirable traits. 
B) reduce the vigor of crops. 
C) reduce the yield and quality of crops. 
D) increase the susceptibility for diseases.

Question 15

The union of a sperm cell with ________ of the female gametophyte is referred as double fertilization.

Accepted Answer

A) two polar nuclei 
B) two synergids 
C) two antipodals 
D) megasporocyte 
A) two polar nuclei 
B) two synergids 
C) two antipodals 
D) megasporocyte

Question 16

Which of the following occurs in an angiosperm ovule?

Accepted Answer

A) An antheridium forms from the megasporophyte. 
B) A megaspore mother cell (megasporocyte)undergoes meiosis. 
C) The nucleus forms a diploid egg. 
D) A pollen tube emerges to accept pollen after pollination. 
A) An antheridium forms from the megasporophyte. 
B) A megaspore mother cell (megasporocyte)undergoes meiosis. 
C) The nucleus forms a diploid egg. 
D) A pollen tube emerges to accept pollen after pollination.

Question 17

What typically results from double fertilization in angiosperms?

Accepted Answer

A) The endosperm develops into a diploid nutrient tissue. 
B) A triploid zygote is formed. 
C) Both a diploid embryo and triploid endosperm are formed. 
D) Two embryos develop in every seed. 
A) The endosperm develops into a diploid nutrient tissue. 
B) A triploid zygote is formed. 
C) Both a diploid embryo and triploid endosperm are formed. 
D) Two embryos develop in every seed.

Question 18

A parent with an S1S2 genotype exhibiting sporophytic self-incompatibility can potentially fertilize which of the following plant genotypes of the same species with pollen grains?

Accepted Answer

A) S1S3 
B) S2S3 
C) S3S4 
D) S1S4 
A) S1S3 
B) S2S3 
C) S3S4 
D) S1S4

Question 19

A plant has a set of multiple alleles for "self" gene "S," which causes self-incompatibility (the ability of plant to reject its own pollen or pollen from closely related plants)to fertilize the egg.Here is a set of plants (sporophytes)with genotypes:
i.S1S2
ii.S2S3
iii.S3S3
iv.S1S3
The S3 pollen from S2S3 parental sporophyte cannot fertilize the eggs of

Accepted Answer

A) i 
B) ii 
C) iii 
D) iv 
A) i 
B) ii 
C) iii 
D) iv

Question 20

Which of the following floral parts is correctly matched?

Accepted Answer

A) anther-microsporangia 
B) petals-protecting floral parts in unopened buds 
C) sepals-attractive for insects 
D) stamen-megasporangium 
A) anther-microsporangia 
B) petals-protecting floral parts in unopened buds 
C) sepals-attractive for insects 
D) stamen-megasporangium

Exam 30: Reproduction and Domestication of Flowering Plants

In flowering plants,a mature male gametophyte contains

The primary function of the integument of an ovule is to

At the end of meiosis (without cytokinesis),a diploid cell in a dicot flower ovule produce

The three characteristics of all angiosperms are

The ________ is (are)the first plant organ(s)that emerge(s)during the process of seed germination.

Which of the following events suggests there is a change in the egg cell membrane after penetration by a sperm?

When a diploid cell in the ovule develops into a seed without sexual reproduction,it is referred to as

Which of the following is a multiple fruit?

How many times does the surviving megaspore divide to produce eight haploid nuclei?

Three mitotic divisions within the female gametophyte of a flowering plant will produce

At the conclusion of meiosis in plants,the end products are always four haploid

The number of megaspores that survive in each ovule after meiosis in megasporocyte is

The technique of plant cross breeding facilitates plant breeders to

The union of a sperm cell with ________ of the female gametophyte is referred as double fertilization.

Which of the following occurs in an angiosperm ovule?

What typically results from double fertilization in angiosperms?

A parent with an S1S2 genotype exhibiting sporophytic self-incompatibility can potentially fertilize which of the following plant genotypes of the same species with pollen grains?

Which of the following floral parts is correctly matched?

Introduction: Evolution and the Foundations of Biology

The Chemical Context of Life

Carbon and the Molecular Diversity of Life

A Tour of the Cell

Membrane Transport and Cell Signaling

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Development,stem Cells,and Cancer

Viruses

Genomes and Their Evolution

Descent With Modification

Phylogeny

The Evolution of Populations

The Origin of Species

Broad Patterns of Evolution

Early Life and the Diversification of Prokaryotes

The Origin and Diversification of Eukaryotes

The Colonization of Land by Plants and Fungi

The Rise of Animal Diversity

Plant Structure and Growth

Resource Acquisition,nutrition,and Transport in Vascular Plants

Plant Responses to Internal and External Signals

Homeostasis and Endocrine Signaling

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Reproduction and Development

Neurons,synapses,and Signaling

Nervous and Sensory Systems

Motor Mechanisms and Behavior

Population Ecology and the Distribution of Organisms

Ecological Communities

Ecosystems and Energy

Conservation Biology and Global Change

Filters

A parent with an S₁S₂ genotype exhibiting sporophytic self-incompatibility can potentially fertilize which of the following plant genotypes of the same species with pollen grains?