Question 1

In certain plants,some of the roots may be modified to carry out unusual functions.Which of these is not an example of one of these special functions?

Accepted Answer

A) help absorb oxygen 
B) store food or water 
C) carry out photosynthesis 
D) parasitize other plants 
E) discourage herbivores 
A) help absorb oxygen 
B) store food or water 
C) carry out photosynthesis 
D) parasitize other plants 
E) discourage herbivores E

Question 2

Primary xylem and phloem are produced by the

Accepted Answer

A) procambium. 
B) protoderm. 
C) leaf primordial. 
D) ground meristem. 
E) proembryo. 
A) procambium. 
B) protoderm. 
C) leaf primordial. 
D) ground meristem. 
E) proembryo. A

Question 3

You have been given a plant sample and asked to identify a specific tissue.Upon investigation,you find the cells are all long in length and some of them have small pores.They all contain fluid.You test the fluid using various biochemical tests and discover the fluid contains an abundance of disaccharides.What type of tissue are you looking at?

Accepted Answer

A) xylem 
B) phloem 
C) root hair cells 
D) sclerenchyma 
E) meristematic 
A) xylem 
B) phloem 
C) root hair cells 
D) sclerenchyma 
E) meristematic B

Question 4

In the vascular bundles of most dicot stems,primary phloem differentiates toward the ________ of the stem,while primary xylem differentiates toward the ________ of the stem.

Accepted Answer

A) middle; outside 
B) cork cambium; vascular cambium 
C) outside; middle 
D) shoot tip; roots 
E) middle; middle 
A) middle; outside 
B) cork cambium; vascular cambium 
C) outside; middle 
D) shoot tip; roots 
E) middle; middle

Question 5

Root hairs grow actively in which area of the developing roots?

Accepted Answer

A) root cap 
B) zone of maturation 
C) zone of elongation 
D) zone of cell division 
E) endodermis 
A) root cap 
B) zone of maturation 
C) zone of elongation 
D) zone of cell division 
E) endodermis

Question 6

Compound leaves

Accepted Answer

A) have two or more petioles per blade. 
B) have a blade divided into leaflets. 
C) are toothed at the edges. 
D) are alternately arranged. 
E) have palmate venation. 
A) have two or more petioles per blade. 
B) have a blade divided into leaflets. 
C) are toothed at the edges. 
D) are alternately arranged. 
E) have palmate venation.

Question 7

All of the following describe characteristics of sclerenchyma cells,except which?

Accepted Answer

A) Their function is primarily to transport oxygen and carbon dioxide throughout the leaf. 
B) They have thick,tough secondary walls. 
C) Their secondary walls may be impregnated with lignin. 
D) They form fibers and sclereids. 
E) They lack living protoplasts when mature. 
A) Their function is primarily to transport oxygen and carbon dioxide throughout the leaf. 
B) They have thick,tough secondary walls. 
C) Their secondary walls may be impregnated with lignin. 
D) They form fibers and sclereids. 
E) They lack living protoplasts when mature.

Question 8

In plants with only primary growth,the epidermis is not

Accepted Answer

A) one cell thick. 
B) the outer protective coating of the plant. 
C) produced by the protoderm. 
D) covered by a waxy layer that constitutes the cuticle. 
E) covered with bark. 
A) one cell thick. 
B) the outer protective coating of the plant. 
C) produced by the protoderm. 
D) covered by a waxy layer that constitutes the cuticle. 
E) covered with bark.

Question 9

The most distinctive characteristic of leaf mesophyll cells is that they are filled with

Accepted Answer

A) central vacuoles. 
B) many chloroplasts. 
C) oxygen bubbles. 
D) veins. 
E) stomata. 
A) central vacuoles. 
B) many chloroplasts. 
C) oxygen bubbles. 
D) veins. 
E) stomata.

Question 10

How could you distinguish between a root hair versus a very small root?

Accepted Answer

A) Root hairs are white,while roots are brown. 
B) Root hairs are extensions of single cells,while roots are multicellular. 
C) Root hairs only absorb water,not nutrients like roots. 
D) Root hairs do not have a cuticle. 
E) The epidermis of a root hair is thinner than the epidermis of a root. 
A) Root hairs are white,while roots are brown. 
B) Root hairs are extensions of single cells,while roots are multicellular. 
C) Root hairs only absorb water,not nutrients like roots. 
D) Root hairs do not have a cuticle. 
E) The epidermis of a root hair is thinner than the epidermis of a root.

Question 11

A stem that cannot increase in diameter is lacking what type of tissue?

Accepted Answer

A) xylem 
B) ground meristem 
C) procambium 
D) protoderm 
E) vascular cambium 
A) xylem 
B) ground meristem 
C) procambium 
D) protoderm 
E) vascular cambium

Question 12

Horizontal rows of parenchymal cells that transport materials horizontally are called?

Accepted Answer

A) rays 
B) tracheids 
C) vessel elements 
D) fibers 
E) sieve tubes 
A) rays 
B) tracheids 
C) vessel elements 
D) fibers 
E) sieve tubes

Question 13

The slender stalk that connects the flattened leaf blade to the stem in most dicots is the

Accepted Answer

A) meristem. 
B) petiole. 
C) stele. 
D) receptacle. 
E) vein. 
A) meristem. 
B) petiole. 
C) stele. 
D) receptacle. 
E) vein.

Question 14

Your lab instructor hands you a root slide and asks you to show her a cell with condensed chromosomes arranged in a straight line.In which section of the root would you begin your search?

Accepted Answer

A) It doesn't matter,all zones have the same level of mitotic activity. 
B) zone of elongation 
C) zone of maturation 
D) zone of cell division 
E) root cap 
A) It doesn't matter,all zones have the same level of mitotic activity. 
B) zone of elongation 
C) zone of maturation 
D) zone of cell division 
E) root cap

Question 15

A friend who is not a biologist tells you that she grows irises from iris roots.You explain to her that the "root" she is planting is not a root,but instead is called a rhizome."Why?" she asked.You explain:

Accepted Answer

A) "A root grows vertically,not horizontally." 
B) "A rhizome has nodes and internodes and is really a modified stem that can exist underground." 
C) "A root stores nutrients,but rhizomes are underground stems that do not store nutrients." 
D) "A rhizome,although a modified stem,acts as a root does.In other words a rhizome is a stem-root combination." 
E) "A rhizome is a modified root that is able to grow leaves." 
A) "A root grows vertically,not horizontally." 
B) "A rhizome has nodes and internodes and is really a modified stem that can exist underground." 
C) "A root stores nutrients,but rhizomes are underground stems that do not store nutrients." 
D) "A rhizome,although a modified stem,acts as a root does.In other words a rhizome is a stem-root combination." 
E) "A rhizome is a modified root that is able to grow leaves."

Question 16

Cell division in the apical meristems at the tips of a plant that results in increases in height or length is called

Accepted Answer

A) primary growth. 
B) secondary growth. 
C) vascular cambium growth. 
D) mitotic growth. 
E) herbaceous growth. 
A) primary growth. 
B) secondary growth. 
C) vascular cambium growth. 
D) mitotic growth. 
E) herbaceous growth.

Question 17

If you examined a cross section of a woody stem under the microscope and located the vascular cambium,the tissues on the inside of the vascular cambium ring (toward the center of the stem)would be

Accepted Answer

A) xylem (primary and secondary). 
B) xylem (only primary). 
C) phloem (primary and secondary). 
D) phloem (only secondary). 
E) phelloderm. 
A) xylem (primary and secondary). 
B) xylem (only primary). 
C) phloem (primary and secondary). 
D) phloem (only secondary). 
E) phelloderm.

Question 18

Damage to the ground meristem of a plant would result in

Accepted Answer

A) the inability to move water but not sugar through the plant. 
B) decreased sugar production. 
C) an increase of gas exchange at the surface of the leaf. 
D) dehydration of the plant. 
E) inability to move sugar but not water through the plant. 
A) the inability to move water but not sugar through the plant. 
B) decreased sugar production. 
C) an increase of gas exchange at the surface of the leaf. 
D) dehydration of the plant. 
E) inability to move sugar but not water through the plant.

Question 19

You come across a recipe for rhubarb pie.Never having heard of rhubarb,you do a little research.You find out that the part of a rhubarb plant that people eat is the petiole of a large leaf.You purchase some rhubarb for your pie and notice that it contains many long stringy fibers.Based on your knowledge of plant tissues,you know that the stringy fibers are

Accepted Answer

A) parenchyma tissue. 
B) phloem tissue. 
C) sclerenchyma tissue. 
D) collenchyma tissue. 
E) xylem tissue. 
A) parenchyma tissue. 
B) phloem tissue. 
C) sclerenchyma tissue. 
D) collenchyma tissue. 
E) xylem tissue.

Question 20

Which of the following cell types does not move materials through the body of the plant?

Accepted Answer

A) sclerenchyma 
B) xylem vessel members 
C) sieve tube members 
D) tracheids 
E) sieve cells 
A) sclerenchyma 
B) xylem vessel members 
C) sieve tube members 
D) tracheids 
E) sieve cells

Exam 35: Plant Form

In certain plants,some of the roots may be modified to carry out unusual functions.Which of these is not an example of one of these special functions?

Primary xylem and phloem are produced by the

In the vascular bundles of most dicot stems,primary phloem differentiates toward the ________ of the stem,while primary xylem differentiates toward the ________ of the stem.

Root hairs grow actively in which area of the developing roots?

Compound leaves

All of the following describe characteristics of sclerenchyma cells,except which?

In plants with only primary growth,the epidermis is not

The most distinctive characteristic of leaf mesophyll cells is that they are filled with

How could you distinguish between a root hair versus a very small root?

A stem that cannot increase in diameter is lacking what type of tissue?

Horizontal rows of parenchymal cells that transport materials horizontally are called?

The slender stalk that connects the flattened leaf blade to the stem in most dicots is the

Your lab instructor hands you a root slide and asks you to show her a cell with condensed chromosomes arranged in a straight line.In which section of the root would you begin your search?

A friend who is not a biologist tells you that she grows irises from iris roots.You explain to her that the "root" she is planting is not a root,but instead is called a rhizome."Why?" she asked.You explain:

Cell division in the apical meristems at the tips of a plant that results in increases in height or length is called

If you examined a cross section of a woody stem under the microscope and located the vascular cambium,the tissues on the inside of the vascular cambium ring (toward the center of the stem)would be

Damage to the ground meristem of a plant would result in

Which of the following cell types does not move materials through the body of the plant?

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In the vascular bundles of most dicot stems,primary phloem differentiates toward the of the stem,while primary xylem differentiates toward the of the stem.