Question 1

Which statement best reflects the current understanding of pollen tube elongation?

Accepted Answer

A) It is not even known if pollen tube growth uses chemical signals or is completely random. 
B) Pollen tube elongation will occur as long as the pistil provides moisture and energy. 
C) While it is known that chemical cues from female tissues help guide pollen tube growth, the identity of these chemicals is not known. 
D) Nearly all of the details of the chemical interactions between the pollen tube and pistil tissue are known. 
A) It is not even known if pollen tube growth uses chemical signals or is completely random. 
B) Pollen tube elongation will occur as long as the pistil provides moisture and energy. 
C) While it is known that chemical cues from female tissues help guide pollen tube growth, the identity of these chemicals is not known. 
D) Nearly all of the details of the chemical interactions between the pollen tube and pistil tissue are known.

Question 2

Where does the male gametophyte form in flowering plants?

Accepted Answer

A) in a stamen 
B) in a carpel 
C) in a receptacle 
D) in a calyx 
A) in a stamen 
B) in a carpel 
C) in a receptacle 
D) in a calyx

Question 3

What happens when pollen from one species lands on the stigma of a flower from another species?

Accepted Answer

A) The pollen tube typically forms and grows to the ovary, but then stops. 
B) The pollen tube typically forms, but the sperm are killed. 
C) The pollen tube typically does not develop. 
D) The pollen tube typically forms, but the sperm cannot penetrate the egg. 
A) The pollen tube typically forms and grows to the ovary, but then stops. 
B) The pollen tube typically forms, but the sperm are killed. 
C) The pollen tube typically does not develop. 
D) The pollen tube typically forms, but the sperm cannot penetrate the egg.

Question 4

What is the purpose of self-incompatibility in flowers?

Accepted Answer

A) It prevents both self-fertilization and self-pollination. 
B) It prevents self-pollination but not self-fertilization. 
C) It prevents self-fertilization but not self-pollination. 
D) It prevents self-fertilization and occasionally prevents self-pollination. 
A) It prevents both self-fertilization and self-pollination. 
B) It prevents self-pollination but not self-fertilization. 
C) It prevents self-fertilization but not self-pollination. 
D) It prevents self-fertilization and occasionally prevents self-pollination.

Question 5

Which of the following give a flower its colour?

Accepted Answer

A) petals 
B) sepals 
C) anthers 
D) stigma 
A) petals 
B) sepals 
C) anthers 
D) stigma

Question 6

What structure releases the chemical cues that help guide a developing pollen tube toward an ovule?

Accepted Answer

A) the egg 
B) the central cell 
C) the antipodal cell 
D) the synergid 
A) the egg 
B) the central cell 
C) the antipodal cell 
D) the synergid

Question 7

Which structure is formed as a result of double fertilization?

Accepted Answer

A) the hypocotyl 
B) the endosperm 
C) the cotyledon 
D) the seed coat 
A) the hypocotyl 
B) the endosperm 
C) the cotyledon 
D) the seed coat

Question 8

Match each flower part with its description.
-stamens

Accepted Answer

A) parts that enclose and protect all other flower parts before the flower opens 
B) male reproductive parts 
C) female reproductive parts 
D) often showy parts that function in attracting bees or other animal pollinators 
A) parts that enclose and protect all other flower parts before the flower opens 
B) male reproductive parts 
C) female reproductive parts 
D) often showy parts that function in attracting bees or other animal pollinators

Question 9

Match each flower part with its description.
-petals

Accepted Answer

A) parts that enclose and protect all other flower parts before the flower opens 
B) male reproductive parts 
C) female reproductive parts 
D) often showy parts that function in attracting bees or other animal pollinators 
A) parts that enclose and protect all other flower parts before the flower opens 
B) male reproductive parts 
C) female reproductive parts 
D) often showy parts that function in attracting bees or other animal pollinators

Question 10

-In the figure, what is item number 5?

Accepted Answer

A) an ovule 
B) a stigma 
C) a receptacle 
D) an anther 
A) an ovule 
B) a stigma 
C) a receptacle 
D) an anther

Question 11

Which of the following is usually the female gametophyte in flowering plants?

Accepted Answer

A) a single ovary 
B) the complete pistil 
C) the shoot parts bearing female flowers 
D) the seven cells embedded in floral tissues 
A) a single ovary 
B) the complete pistil 
C) the shoot parts bearing female flowers 
D) the seven cells embedded in floral tissues

Question 12

Which type of reproduction involves the growth of a new plant on the margin of a leaf that eventually falls to the ground and grows independently?

Accepted Answer

A) grafting 
B) fragmentation 
C) apomixes 
D) somaclonal section 
A) grafting 
B) fragmentation 
C) apomixes 
D) somaclonal section

Question 13

Where in a flowering plant would meiosis be expected to occur?

Accepted Answer

A) in trichomes 
B) in leaves 
C) in roots 
D) in flowers 
A) in trichomes 
B) in leaves 
C) in roots 
D) in flowers

Question 14

What is the term for the process of asexual reproduction in which a diploid embryo develops from an unfertilized egg or from diploid cells in ovule tissue?

Accepted Answer

A) grafting 
B) somaclonal section 
C) apomixis 
D) fragmentation 
A) grafting 
B) somaclonal section 
C) apomixis 
D) fragmentation

Question 15

Match each flower part with its description.
-carpels

Accepted Answer

A) parts that enclose and protect all other flower parts before the flower opens 
B) male reproductive parts 
C) female reproductive parts 
D) often showy parts that function in attracting bees or other animal pollinators 
A) parts that enclose and protect all other flower parts before the flower opens 
B) male reproductive parts 
C) female reproductive parts 
D) often showy parts that function in attracting bees or other animal pollinators

Question 16

Which term refers to a flower that lacks either stamens or carpels?

Accepted Answer

A) perfect 
B) imperfect 
C) incomplete 
D) complete 
A) perfect 
B) imperfect 
C) incomplete 
D) complete

Question 17

Which sequence represents the most typical order of events in seed germination?

Accepted Answer

A) shoot cells divide and elongate - root cells divide and elongate - seed coat splits - water imbibition 
B) seed coat splits - water imbibition - root cells divide and elongate - shoot cells divide and elongate 
C) water imbibition - seed coat splits - root cells divide and elongate - shoot cells divide and elongate 
D) water imbibition - root cells divide and elongate - seed coat splits - shoot cells divide and elongate 
A) shoot cells divide and elongate - root cells divide and elongate - seed coat splits - water imbibition 
B) seed coat splits - water imbibition - root cells divide and elongate - shoot cells divide and elongate 
C) water imbibition - seed coat splits - root cells divide and elongate - shoot cells divide and elongate 
D) water imbibition - root cells divide and elongate - seed coat splits - shoot cells divide and elongate

Question 18

In a flowering plant, which structure includes the ovary?

Accepted Answer

A) the stamen 
B) the ovule 
C) the calyx 
D) the carpel 
A) the stamen 
B) the ovule 
C) the calyx 
D) the carpel

Question 19

Which of the following is the female gametophyte in flowering plants?

Accepted Answer

A) the seed 
B) the embryo sac 
C) the megasporocyte 
D) the ovule 
A) the seed 
B) the embryo sac 
C) the megasporocyte 
D) the ovule

Question 20

What governs the course of the vegetative growth throughout the life of a plant?

Accepted Answer

A) Genes that govern plant development switch on in response only to changing internal environment. 
B) Genes that govern plant development switch on in response only to changing external environment. 
C) Genes that govern plant development switch on and off in response to changing external environment. 
D) Genes that govern plant development switch on and off in response to changing internal environment. 
A) Genes that govern plant development switch on in response only to changing internal environment. 
B) Genes that govern plant development switch on in response only to changing external environment. 
C) Genes that govern plant development switch on and off in response to changing external environment. 
D) Genes that govern plant development switch on and off in response to changing internal environment.

Exam 36: Reproduction and Development in Flowering Plants

Which statement best reflects the current understanding of pollen tube elongation?

Where does the male gametophyte form in flowering plants?

What happens when pollen from one species lands on the stigma of a flower from another species?

What is the purpose of self-incompatibility in flowers?

Which of the following give a flower its colour?

What structure releases the chemical cues that help guide a developing pollen tube toward an ovule?

Which structure is formed as a result of double fertilization?

Match each flower part with its description. -stamens

Match each flower part with its description. -petals

-In the figure, what is item number 5?

Which of the following is usually the female gametophyte in flowering plants?

Which type of reproduction involves the growth of a new plant on the margin of a leaf that eventually falls to the ground and grows independently?

Where in a flowering plant would meiosis be expected to occur?

What is the term for the process of asexual reproduction in which a diploid embryo develops from an unfertilized egg or from diploid cells in ovule tissue?

Match each flower part with its description. -carpels

Which term refers to a flower that lacks either stamens or carpels?

Which sequence represents the most typical order of events in seed germination?

In a flowering plant, which structure includes the ovary?

Which of the following is the female gametophyte in flowering plants?

What governs the course of the vegetative growth throughout the life of a plant?

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

Organization of the Plant Body

Transport in Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Transport in Animals: the Circulatory System

Reproduction in Animals

Animal Development

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Muscles, Skeletons, and Body Movements

Animal Behaviour

Animal Nutrition

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

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