Question 1 of 30 3.33/ 3.33 Points
In the lifecycle of Ascaris, the final place of residence of the adult worm is
A. under the skin of humans.
B. the irculatory system of humans.
C. the intestine of humans.
D. the liver of humans.
E. the lungs of a human.
Answer Key: C
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Question 2 of 30 3.33/ 3.33 Points
If you were a scientist studying animals that have their body cavity incompletely lined with mesoderm, you would be studying
A. acoelomates.
B. pseudocoelomates.
C. protostomes.
D. segmented worms.
E. eucoelomates.
Answer Key: B
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Question 3 of 30 3.33/ 3.33 Points
Humans belong to which of the following phyla?
A. Echinoderms
B. Arthropods
C. hordates
D. Cnidarians
E. Annelids
Answer Key: C
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Question 4 of 30 3.33/ 3.33 Points
All of the following are animal characteristics except:
A. They have muscles and nerves which give them movement and coordination.
B. They are chemoheterotrophs.
C. They usually reproduce sexually.
D. They undergo developmental stages that produce specialized tissues and organs.
E. They are multicellular and unicellular.
Answer Key: E
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Question 5 of 30 3.33/ 3.33 Points
The anterior region of a tapeworm, which bears hooks and suckers for attachment to the intestinal wall of the host, is termed the
A. flame cell.
B. cnidocyte.
C. hermaphrodite.
D. scolex.
E. pglottid.
Answer Key: D
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Part 2 of 8 - 9.99/ 16.65 Points
Question 6 of 30 3.33/ 3.33 Points
Most plants have a body divided into two main parts which are
A. the stem system and the root system.
B. the leaf system and the stem system.
C. the shoot system and the root system.
D. the branch system and the stem system.
E. the root system and the leaf system.
Answer Key: C
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Question 7 of 30 0.0/ 3.33 Points
Which of the following is not a function of the apical meristem of plants?
A. Produces carbohydrates
B. Produces epidermal tissue
C. Carries out cell division
D. Produces vascular tissue
E. Produces ground tissue
Answer Key: A
Feedback: Carbohydrate production in a function of mesophyll tissue located in the leaves.
Question 8 of 30 3.33/ 3.33 Points
Which of the following is not a function of the root system in plants?
A. To anchor the plant
B. To store carbohydrates
C. To absorb carbohydrates
D. To absorb minerals
E. To absorb water
Answer Key: C
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Question 9 of 30 3.33/ 3.33 Points
The portion of the plant located at the shoot tip is referred to as
A. the terminal bud.
B. the petiole.
C. the vascular tissue.
D. the internode.
E. the node.
Answer Key: A
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Question 10 of 30 0.0/ 3.33 Points
If you were studying the rate of gas exchange that takes place in the leaves of plants, you would be studying which of the following?
A. The periderm
B. The cuticle
C. The stomata
D. The cortex
E. The lenticels
Answer Key: C
Feedback: The stomata are openings in the leaf epidermis that permit for carbon dioxide to enter the leaf while oxygen departs from the leaf.
Part 3 of 8 - 13.32/ 16.65 Points
Question 11 of 30 0.0/ 3.33 Points
Sugar is produced in ____________ and then moves to _________________.
A. a sink; a source
B. the roots; the leaves
C. the roots; the stem
D. a source; a sink
E. a source; the stem
Answer Key: D
Feedback: Photosynthesizing leaves are a source of sugar (e.g., sucrose). The roots (and other growth areas) are a sink for sugar, meaning that they are removing sugar and using it for cellular respiration.
Question 12 of 30 3.33/ 3.33 Points
With the aid of a microscope you are examining the cells which border a stoma and regulate its opening and closing. Which of the following cells would you be looking at?
A. Casparian cells
B. Mesophyll cells
C. Tracheid cells
D. Xylem cells
E. Guard cells
Answer Key: E
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Question 13 of 30 3.33/ 3.33 Points
The absorption of toxic substances by plants is referred to as phytoremediation.
True
False
Answer Key: True
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Question 14 of 30 3.33/ 3.33 Points
Which of the following is the vascular tissue which transports organic nutrients to all parts of the plant?
A. Xylem
B. Phloem
C. Palisade mesophyll
D. Vessel elements
E. Spongy mesophyll
Answer Key: B
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Question 15 of 30 3.33/ 3.33 Points
The contents of the phloem always move down the stem of the plant.
True
False
Answer Key: False
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Part 4 of 8 - 9.99/ 16.65 Points
Question 16 of 30 3.33/ 3.33 Points
Which of the following is the most important contribution that large mammals such as bears and raccoons play in completing the life cycle of plants?
A. Helps plants obtain nutrients
B. Fertilization
C. Pollination
D. Helps plants obtain water
E. Seed dispersal
Answer Key: E
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Question 17 of 30 0.0/ 3.33 Points
Which of the following statements about the germination of a corn kernel is false?
A. Both the immature leaves and roots are covered by a sheath
B. It has a single cotyledon
C.
The corn kernel remains below the soil
D. The first structure to break the surface of the soil is the hypocotyl
E. The outer covering is called the pericarp
Answer Key: D
Feedback: The coleoptile is the first structure to break ground in a corn kernel germination.
Question 18 of 30 3.33/ 3.33 Points
Of the organisms listed below, which is not important in the dispersal of seeds in plants?
A. Bears
B. Ants
C. Squirrels
D. Raccoons
E. Butterflies
Answer Key: E
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Question 19 of 30 3.33/ 3.33 Points
Which is the correct order of the stages in the development of an embryo and endosperm in the seed?
A. Proembryo, torpedo, heart, globular, mature
B. Globular, heart, torpedo, proembryo, mature
C. Heart, globular, torpedo, proembryo, mature
D. Proembryo, heart, globular, torpedo, mature
E. Proembryo, globular, heart, torpedo, mature
Answer Key: E
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Question 20 of 30 0.0/ 3.33 Points
Which of the following is arranged in the proper order?
A. Pollination, fertilization, germination, seed formation
B. Fertilization, pollination, seed formation, germination
C. Germination, seed formation, fertilization, pollination
D. Pollination, fertilization, seed formation, germination
E. Seed formation, fertilization, germination, pollination
Answer Key: D
Feedback: The correct order of development in plants is pollination, fertilization, seed formation, and germination.
Part 5 of 8 - 3.33/ 6.66 Points
Question 21 of 30 0.0/ 3.33 Points
In the lab activity, how did you place the plant sprig in the potometer?
A. By double clicking on the sprig
B. By selecting the location from a dropdown menu
C. By dragging the sprig and dropping it near the potometer
D. By dragging the sprig near the photometer
Answer Key: C
Feedback: Refer to the lab simulation for details.
Question 22 of 30 3.33/ 3.33 Points
In the simulation respiration was measured for each plant under each condition for how long?
A. Ten minutes
B. 24 hours
C. One hour
D. One minute
Answer Key: C
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Part 6 of 8 - 6.66/ 9.99 Points
Question 23 of 30 3.33/ 3.33 Points
In addition to allowing water loss, stomata make possible the ___________ across the leaf surface.
A. Production of nutrients
B. Exchange of gases
C. Capture of photons
D. Release of pigments
Answer Key: B
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Question 24 of 30 3.33/ 3.33 Points
When stomata remain open for an extended period of time, water is lost to the environment by
A. Cohesion
B. Stem pressure
C. Capillary action
D. Evaporation
Answer Key: D
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Question 25 of 30 0.0/ 3.33 Points
What physical principle explains the upward movement of water in a plant?
A. Root pressure
B. Gravity
C. Capillary action
D. Respiration
Answer Key: C
Feedback: Capillary action is what drives transpiration pull of water through a plant's vascular system.
Part 7 of 8 - 3.33/ 9.99 Points
Question 26 of 30 0.0/ 3.33 Points
Which environmental condition always led to an increase in transpiration rate in each plant tested?
A. Time
B. Light
C. Heat
Answer Key: C
Feedback: Both heat and wind increased the transpiration rate for every plant tested.
Question 27 of 30 0.0/ 3.33 Points
How does heat affect the rate of transpiration in a plant?
A. As heat increases the rate of transpiration increases
B. As heat increases the rate of transpiration decreases
C. As heat increases the rate of transpiration remains constant
D. As heat decreases the rate of transpiration increases
Answer Key: A
Feedback: Heat increased the transpiration rate in all plants tested.
Question 28 of 30 3.33/ 3.33 Points
How does wind affect the rate of transpiration in Weeping Fig?
A. Adding wind decreases the rate of transpiration 1.6 mL in two hours
B. Adding wind has no effect on the rate of transpiration after one hour
C. Adding wind increases the rate of transpiration 2.8 mL in one hour
D. Adding wind decreases the rate of transpiration 0.3 mL in one hour
Answer Key: C
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Part 8 of 8 - 3.33/ 6.66 Points
Question 29 of 30 0.0/ 3.33 Points
Assuming all environmental factors remain constant except for the heat, predict what would happen to the rate of transpiration of a plant exposed to higher than normal heat conditions for an extended period of time. Explain your answer.
The transpiration rate would keep dropping to where there were none
Model Short Answer: The rate of transpiration will increase. This is because heat accelerates the movement of water inside the plant, increasing the rate of transpiration.
Comment: It will increase
Question 30 of 30 3.33/ 3.33 Points
Based on the results from the lab, compare and contrast the effects of wind and heat on the transpiration rate of plants.
Heat increased the transpiration rates for all plants and light for most. Overall, transpiration was increased more with the heater than with the lamp.
Model Short Answer: Heat and wind increased the transpiration rates for all plants and wind generally increased the rates more than heat did.
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