Question 1

Plants with thorns modified stems) are typical of plants that historically have needed to protect themselves from

Accepted Answer

A)  windstorms. 
B)  mammalian herbivores. 
C)  severe drought stress. 
D)  hungry insects. 
E)  all of the above. 
A)  windstorms. 
B)  mammalian herbivores. 
C)  severe drought stress. 
D)  hungry insects. 
E)  all of the above. B

Question 2

Monocot vascular bundles do not have a vascular cambium between the xylem and phloem. This means that

Accepted Answer

A)  monocots do not produce wood in annual rings. 
B)  monocots are much less efficient at conducting water and sugars. 
C)  monocots have very thin stems. 
D)  monocots produce secondary xylem and phloem. 
A)  monocots do not produce wood in annual rings. 
B)  monocots are much less efficient at conducting water and sugars. 
C)  monocots have very thin stems. 
D)  monocots produce secondary xylem and phloem. A

Question 3

Plant leaf epidermal cells have an amazing array of trichomes. What is not a function of trichomes?

Accepted Answer

A)  Impale insects that try to lay eggs on the leaves. 
B)  Repel or trap insects with toxic compounds. 
C)  Reflect sunlight in sunny locations. 
D)  Store starch granules. 
E)  Reduce water loss from leaves. 
A)  Impale insects that try to lay eggs on the leaves. 
B)  Repel or trap insects with toxic compounds. 
C)  Reflect sunlight in sunny locations. 
D)  Store starch granules. 
E)  Reduce water loss from leaves. D

Question 4

What is not a function of modified leaves?

Accepted Answer

A)  attracting pollinating insects with their bright colours 
B)  wrapping around structures for support 
C)  absorbing oxygen for photosynthesis 
D)  trapping and digesting insects for an additional nutrient source 
E)  storing nutrients and water 
A)  attracting pollinating insects with their bright colours 
B)  wrapping around structures for support 
C)  absorbing oxygen for photosynthesis 
D)  trapping and digesting insects for an additional nutrient source 
E)  storing nutrients and water

Question 5

Which of the following structure- function pairs is correct?

Accepted Answer

A)  chloroplasts-give shape and support to the cell 
B)  vacuoles-link one cell to another 
C)  pigments-digest waste products 
D)  cell walls-help support plants 
E)  plasmodesmata-store pigments and fluids 
A)  chloroplasts-give shape and support to the cell 
B)  vacuoles-link one cell to another 
C)  pigments-digest waste products 
D)  cell walls-help support plants 
E)  plasmodesmata-store pigments and fluids

Question 6

You find a plant unfamiliar to you and observe that it has vascular bundles scattered throughout the stem cross section. What do you conclude about the plant?

Accepted Answer

A)  It will probably get annual rings of wood. 
B)  It is probably an herbaceous eudicot. 
C)  It is probably a monocot. 
D)  It could be either a young eudicot or a monocot. 
A)  It will probably get annual rings of wood. 
B)  It is probably an herbaceous eudicot. 
C)  It is probably a monocot. 
D)  It could be either a young eudicot or a monocot.

Question 7

Apical meristems of dicots are at the tips of stems. Apical meristems of grasses are at ground level or slightly below, concealed by the leaves. The leaves also have an intercalary meristem at their bases. What does this mean when considering care of a lawn or soccer field?

Accepted Answer

A)  If you mow 2 inches above ground level, most apical meristems will be cut down. 
B)  If you mow 2 inches above ground level, both the apical and intercalary meristems can keep producing new cells. 
C)  If you mow right at ground level, the apical meristems are activated, thereby inducing grass growth. 
D)  Grass mowed 2 inches above ground level grows at a slower rate compared to grass mowed 3 inches above the ground level. 
A)  If you mow 2 inches above ground level, most apical meristems will be cut down. 
B)  If you mow 2 inches above ground level, both the apical and intercalary meristems can keep producing new cells. 
C)  If you mow right at ground level, the apical meristems are activated, thereby inducing grass growth. 
D)  Grass mowed 2 inches above ground level grows at a slower rate compared to grass mowed 3 inches above the ground level.

Question 8

Root hairs on a root develop

Accepted Answer

A)  on the entire root surface. 
B)  on the root cap. 
C)  after the cells elongate. 
D)  before the cells elongate. 
A)  on the entire root surface. 
B)  on the root cap. 
C)  after the cells elongate. 
D)  before the cells elongate.

Question 9

When comparing root systems of plants growing on a square foot in a corn field and on a meadow, what result do you expect to receive?

Accepted Answer

A)  The mass and length of roots on a meadow will be larger because soil is poorer and there is higher diversity of plants. 
B)  The overall mass of roots on a meadow will be lower, but the length will be higher since roots need to grow deeper to reach nutrients. 
C)  The overall mass of roots will be identical in a cornfield and on a meadow. 
D)  The mass and length of roots in a cornfield will be larger because soil is fertilized. 
A)  The mass and length of roots on a meadow will be larger because soil is poorer and there is higher diversity of plants. 
B)  The overall mass of roots on a meadow will be lower, but the length will be higher since roots need to grow deeper to reach nutrients. 
C)  The overall mass of roots will be identical in a cornfield and on a meadow. 
D)  The mass and length of roots in a cornfield will be larger because soil is fertilized.

Question 10

In 2005, a spot 1 centimeter from the center of a woody stem is in the bark. In what tissue will the same spot 1 cm from the center) be in 2050?

Accepted Answer

A)  bark 
B)  vascular cambium 
C)  secondary phloem 
D)  secondary xylem 
E)  impossible to tell 
A)  bark 
B)  vascular cambium 
C)  secondary phloem 
D)  secondary xylem 
E)  impossible to tell

Question 11

What is the advantage of having small, needlelike leaves?

Accepted Answer

A)  better protection against insects and herbivore 
B)  increase in transpiration rate 
C)  decrease in transpiration rate 
D)  increased efficiency of light capture 
E)  decreased efficiency of light capture 
A)  better protection against insects and herbivore 
B)  increase in transpiration rate 
C)  decrease in transpiration rate 
D)  increased efficiency of light capture 
E)  decreased efficiency of light capture

Question 12

Which of the following cannot grow indeterminately?

Accepted Answer

A)  stem 
B)  root 
C)  leaf 
D)  shoot 
E)  none of the above 
A)  stem 
B)  root 
C)  leaf 
D)  shoot 
E)  none of the above

Question 13

Explain why it is possible for big old hollow trees to live and grow for many years, still producing green leaves.

Accepted Answer

The center of a tree has accumulated man

Question 14

Which of these structure- function pairs is correct?

Accepted Answer

A)  wax-makes leaf slippery so insects skid off 
B)  guard cells-prevent insects from laying eggs on leaves 
C)  cuticle-inhibits water loss and pathogen entry 
D)  stomata-protect against pathogens 
E)  trichomes-secrete the waxy cuticle 
A)  wax-makes leaf slippery so insects skid off 
B)  guard cells-prevent insects from laying eggs on leaves 
C)  cuticle-inhibits water loss and pathogen entry 
D)  stomata-protect against pathogens 
E)  trichomes-secrete the waxy cuticle

Question 15

The most effective way to kill a tree is to remove a ring of bark from the circumference. Why does the tree die?

Accepted Answer

A)  No water can be transported from the leaves to the roots. 
B)  No sugars can be transported from the leaves to the roots. 
C)  No water can be transported from the roots to the leaves. 
D)  Both water and sugars are prevented from being transported. 
A)  No water can be transported from the leaves to the roots. 
B)  No sugars can be transported from the leaves to the roots. 
C)  No water can be transported from the roots to the leaves. 
D)  Both water and sugars are prevented from being transported.

Question 16

Which of these statements is true about xylem and phloem?

Accepted Answer

A)  Xylem and phloem cells are derived from a ground meristem. 
B)  Xylem cells do not contain cytoplasm. 
C)  Xylem is made of companion cells and vessel elements. 
D)  Phloem cells do not contain cytoplasm. 
E)  All of these statements are correct. 
A)  Xylem and phloem cells are derived from a ground meristem. 
B)  Xylem cells do not contain cytoplasm. 
C)  Xylem is made of companion cells and vessel elements. 
D)  Phloem cells do not contain cytoplasm. 
E)  All of these statements are correct.

Question 17

Growth and development of plant parts involves

Accepted Answer

A)  cells taking up water. 
B)  specialization of meristimatic cells into xylem. 
C)  division of apical meristem cells. 
D)  all of the above. 
A)  cells taking up water. 
B)  specialization of meristimatic cells into xylem. 
C)  division of apical meristem cells. 
D)  all of the above.

Question 18

In a meristematic region, the cell plate during mitosis is perpendicular to the side of the stem. In what direction will the stem grow?

Accepted Answer

A)  vertically in height 
B)  laterally in width 
A)  vertically in height 
B)  laterally in width

Question 19

Which of these is not an example of a parenchyma cell?

Accepted Answer

A)  support cells near the outside of nonwoody stems 
B)  tissue in leaves that photosynthesizes 
C)  totipotent cells that aid in wound healing 
D)  stem cells that form a callus in the making of cuttings 
E)  edible cells in fruits and vegetables 
A)  support cells near the outside of nonwoody stems 
B)  tissue in leaves that photosynthesizes 
C)  totipotent cells that aid in wound healing 
D)  stem cells that form a callus in the making of cuttings 
E)  edible cells in fruits and vegetables

Question 20

Why do leaves exhibit a high surface area/volume ratio?

Accepted Answer

A)  to increase the size of mesophyll cells to subsequently increase the rate of photosynthesis 
B)  to increase the amount of shade on the plant body to reduce transpiration 
C)  to increase the amount of nitrogen absorbed by the plant 
D)  to increase the amount of photon absorption 
E)  to increase the amount of water absorbed by the leaves 
A)  to increase the size of mesophyll cells to subsequently increase the rate of photosynthesis 
B)  to increase the amount of shade on the plant body to reduce transpiration 
C)  to increase the amount of nitrogen absorbed by the plant 
D)  to increase the amount of photon absorption 
E)  to increase the amount of water absorbed by the leaves

Exam 34: Plant Form and Function

Plants with thorns modified stems) are typical of plants that historically have needed to protect themselves from

Monocot vascular bundles do not have a vascular cambium between the xylem and phloem. This means that

Plant leaf epidermal cells have an amazing array of trichomes. What is not a function of trichomes?

What is not a function of modified leaves?

Which of the following structure- function pairs is correct?

You find a plant unfamiliar to you and observe that it has vascular bundles scattered throughout the stem cross section. What do you conclude about the plant?

Apical meristems of dicots are at the tips of stems. Apical meristems of grasses are at ground level or slightly below, concealed by the leaves. The leaves also have an intercalary meristem at their bases. What does this mean when considering care of a lawn or soccer field?

Root hairs on a root develop

When comparing root systems of plants growing on a square foot in a corn field and on a meadow, what result do you expect to receive?

In 2005, a spot 1 centimeter from the center of a woody stem is in the bark. In what tissue will the same spot 1 cm from the center) be in 2050?

What is the advantage of having small, needlelike leaves?

Which of the following cannot grow indeterminately?

Explain why it is possible for big old hollow trees to live and grow for many years, still producing green leaves.

Which of these structure- function pairs is correct?

The most effective way to kill a tree is to remove a ring of bark from the circumference. Why does the tree die?

Which of these statements is true about xylem and phloem?

Growth and development of plant parts involves

In a meristematic region, the cell plate during mitosis is perpendicular to the side of the stem. In what direction will the stem grow?

Which of these is not an example of a parenchyma cell?

Why do leaves exhibit a high surface area/volume ratio?

Biology and the Tree of Life

Water and Carbon: the Chemical Basis of Life

Protein Structure and Function

Nucleic Acids and the Rna World

An Introduction to Carbohydrates

Lipids, Membranes, and the First Cells

Inside the Cell

Energy and Enzymes

Cellular Respiration and Fermentation

Photosynthesis

Cellcell Interactions

The Cell Cycle

Meiosis

Mendel and the Gene

Dna and the Gene: Synthesis and Repair

How Genes Work

Transcription, Rna Processing, and Translation

Control of Gene Expression in Bacteria

Control of Gene Expression in Eukaryotes

The Molecular Revolution: Biotechnology and Beyond

Gene Structure and Development

Evolution by Natural Selection

Evolutionary Processes

Speciation

Phylogenies and the History of Life

Bacteria and Archaea

Protists

Green Algae and Land Plants

Fungi

An Introduction to Animals

Protostome Animals

Deuterostome Animals

Viruses

Water and Sugar Transport in Plants

Plant Nutrition

Plant Sensory Systems, Signals, and Responses

Plant Reproduction and Development

Animal Form and Function

Water and Electrolyte Balance in Animals

Animal Nutrition

Gas Exchange and Circulation

Animal Nervous Systems

Animal Sensory Systems

Animal Movement

Chemical Signals in Animals

Animal Reproduction and Development

The Immune System in Animals

An Introduction to Ecology

Behavioural Ecology

Population Ecology

Community Ecology

Ecosystems and Global Ecology

Biodiversity and Conservation Biology

Filters