Deck 13: Plants Functioning in Their Habitat

Question 1

The __________ reactions convert _____ (B) to sugars.

A) Calvin cycle; O₂
B) light; CO₂
C) Calvin cycle; CO₂
D) light; O₂

Answer 1

C

Question 2

Environmental stress can result from an inadequate supply of which of the following?

A) minerals
B) sunlight
C) water
D) all of these

Answer 2

D

Question 3

In the first phase of photosynthesis, __________ + light = chemical energy.

A) carbon dioxide
B) nitrogen
C) oxygen
D) water

Answer 3

D

Question 4

The microbes that live within the pitcher plant help the plant by

A) breaking down the dead insects.
B) enticing the insects to enter the plant.
C) producing nectar.
D) producing water.

Question 5

The sarsaparilla plant survives in a dense forest because it

A) becomes dormant.
B) destroys competing plants.
C) has broad leaves.
D) is very tall.

Question 6

The first stage of photosynthesis is(are) the __________, and the second stage is(are) the __________.

A) Calvin cycle; Calvin cycle
B) Calvin cycle; light reactions
C) light reactions; Calvin cycle
D) light reactions; light reactions

Question 7

In a plant, water is transported via __________ and sugar via __________.

A) phloem; phloem
B) phloem; xylem
C) xylem; phloem
D) xylem; xylem

Question 8

The pitcher plant obtains the nitrogen necessary for growth from

A) ATP.
B) captured insects.
C) its waxy crystals.
D) the sun.

Question 9

In the second phase of photosynthesis, chemical energy + __________ = sugar.

A) carbon dioxide
B) nitrogen
C) oxygen
D) water

Question 10

Pressure flow involves

A) sugar transported in phloem.
B) sugar transported in xylem.
C) water transported in phloem.
D) water transported in xylem.

Question 11

When the water in a plant's vacuoles is used, it causes

A) a waxy covering to develop.
B) increased tissue growth.
C) transpiration.
D) wilting.

Question 12

Rubisco is necessary for

A) capturing light energy.
B) carbon cycling.
C) producing chlorophyll.
D) water absorption.

Question 13

Poison ivy reacts to low sunlight by

A) developing additional roots.
B) flowering more often.
C) increasing leaf size.
D) increasing stem growth.

Question 14

In the __________, the absorption of light energy is used to transform _____ (A) and other resources into ATP.

A) light reactions; H₂O
B) light reactions; CO₂
C) Calvin cycle; O₂
D) Calvin cycle; sugar

Question 15

Plants obtain necessary gases from __________ and water from __________.

A) air; air
B) air; roots
C) roots; air
D) roots; roots

Question 16

Which of the following is a micronutrient necessary for plants?

A) chlorine
B) nitrogen
C) phosphorus
D) potassium

Question 17

Photosynthesis takes place in

A) flowers only.
B) leaves only.
C) roots only.
D) any green part of the plant.

Question 18

A chlorophyll molecule consists of four nitrogen atoms surrounding a magnesium core and

A) one fatty acid.
B) two fatty acids.
C) three fatty acids.
D) four fatty acids.

Question 19

The alkaloids contained in the nectar of the pitcher plant serve to

A) attract insects.
B) attract microbes.
C) collect water.
D) disable insects.

Question 20

Which mineral is necessary for a plant to develop both nucleic and amino acids?

A) carbon
B) magnesium
C) nitrogen
D) potassium

Question 21

One example of temporal separation is the conservation of

A) carbon dioxide.
B) energy.
C) oxygen.
D) water.

Question 22

In a temporal separation of the steps of photosynthesis, the steps are separated by

A) location.
B) season.
C) time.
D) weather conditions.

Question 23

When the light reactions occur in the daytime and the Calvin cycle takes place at night, this is an example of

A) physical separation.
B) seasonal separation.
C) temporal separation.
D) transpiration.

Question 24

As a part of photosynthesis, water molecules are split into how many products?

A) two
B) three
C) four
D) five

Question 25

A typical leaf contains __________ chloroplasts.

A) 1-5
B) 20-100
C) 100,000-300,000
D) millions of

Question 26

Two essential ingredients for photosynthesis are

A) carbon dioxide and oxygen.
B) carbon dioxide and water.
C) oxygen and water.
D) oxygen and nitrogen gas.

Question 27

Which of the following is a waste product of photosynthesis?

A) carbon dioxide
B) oxygen
C) sugar
D) water

Question 28

The electron transport chain is used to produce

A) ATP.
B) carbon dioxide.
C) oxygen.
D) water.

Question 29

Oxygen dissolved in water moves ____________________ it does in air.

A) faster than
B) slower than
C) at the same rate as
D) faster or slower, depending on the microbe content of the water, than

Question 30

Plant respiration occurs in

A) chloroplasts.
B) mitochondria.
C) the surrounding air.
D) More than one answer is correct.

Question 31

In a plant, __________ represent a source and __________ represent a sink.

A) leaves; fruits
B) fruits; leaves
C) roots; leaves
D) roots; fruits

Question 32

Additional air chambers in the stems and roots of cattails allow it to survive when exposed to

A) drought.
B) fire.
C) frost.
D) wetland conditions.

Question 33

Aerobic respiration in plants occurs

A) continually.
B) only in the daytime.
C) only at night.
D) sporadically.

Question 34

When the light reactions take place in chloroplasts and the Calvin cycle occurs in bundle-sheath cells, this is a

A) physical separation.
B) seasonal separation.
C) temporal separation.
D) transpiration.

Question 35

Aerobic respiration takes place in

A) chloroplasts only.
B) mitochondria only.
C) chloroplasts first, then mitochondria.
D) mitochondria first, then chloroplasts.

Question 36

The two primary functions of chlorophyll are to ____________________.

A) absorb light and reflect light
B) absorb light and transfer energy to other compounds
C) reflect light and transfer energy to other compounds
D) absorb light and eliminate excess water

Question 37

The resurrection plant (a club moss) has the unique ability to withstand

A) a lack of sunlight.
B) drought.
C) fire.
D) floods.

Question 38

The loading of sugars into phloem goes __________ the concentration gradient and involves a(n) __________ process.

A) against; active
B) against; passive
C) with; active
D) with; passive

Question 39

Which of the following is the proper sequence for the three stages of aerobic respiration in plants?

A) citric acid cycle, electron transport chain, glycolysis
B) citric acid cycle, glycolysis, electron transport chain
C) glycolysis, citric acid cycle, electron transport chain
D) glycolysis, electron transport chain, citric acid cycle

Question 40

The rate of aerobic respiration in plants depends upon the

A) availability of oxygen.
B) lifestyle stage.
C) temperature.
D) all of these

Question 41

If a pitcher plant is grown in an insect-free environment, what would you expect to happen?

A) No changes will occur.
B) The plant will limit its growth.
C) The plant will produce more nectar.
D) The plant will instantly die.

Question 42

A horticultural student is performing a study utilizing both banana trees from the tropical rain forest and cacti from the desert. The student has been provided with soils of different particle sizes as follows: soil A = 0.08 mm, soil B = 0.008 mm, and soil C = 0.001 mm. The student places one banana tree and one cactus in each soil type and monitors their condition. Note that all samples receive the same amount of water. In which soil would the banana tree receive the most appropriate amount of water for its needs?

A) soil A
B) soil B
C) soil C
D) It would receive the appropriate amount of water from all the soil types.

Question 43

As much as 50 percent of a soil's volume is

A) air.
B) iron.
C) manganese.
D) water.

Question 44

How could a plant adapt to reduced sunlight in a dense forest?

A) The plant could cling to trees and grow upward.
B) The plant could develop broader leaves.
C) The plant could develop more roots.
D) Both (a) and (b) are correct.

Question 45

Plants switch to anaerobic respiration when __________ is in poor supply.

A) carbon dioxide
B) oxygen
C) sugar
D) water

Question 46

The production of chlorophyll molecules requires most plants to obtain __________ from the soil.

A) calcium
B) magnesium
C) nitrogen
D) potassium

Question 47

One would expect the concentration of sugar in __________ to be greater than in __________.

A) leaves; roots
B) root; leaves
C) flowers; leaves
D) The concentration of sugar would be the same in all parts of the plant.

Question 48

A horticultural student is performing a study utilizing both banana trees from the tropical rain forest and cacti from the desert. The student has been provided with soils of different particle sizes as follows: soil A = 0.08 mm, soil B = 0.008 mm, and soil C = 0.001 mm. The student places one banana tree and one cactus in each soil type and monitors their condition. Note that all samples receive the same amount of water. In which soil would the cactus receive the most appropriate amount of water for its needs?

A) soil A
B) soil B
C) soil C
D) It would receive the appropriate amount of water from all the soil types.

Question 49

A plant that undergoes temporal separation of the steps of photosynthesis is administered a drug that prevents the stomata from opening at night. What effect will this have on the plant?

A) It will have no effect.
B) The light reactions will take place, but the Calvin cycle will not.
C) The light reactions will not take place, but the Calvin cycle will.
D) Both parts of photosynthesis will not take place.

Question 50

A horticultural student is performing a study utilizing both banana trees from the tropical rain forest and cacti from the desert. The student has been provided with soils of different particle sizes as follows: soil A = 0.08 mm, soil B = 0.008 mm, and soil C = 0.001 mm. The student places one banana tree and one cactus in each soil type and monitors their condition. Note that all samples receive the same amount of water. In which soil would the banana tree do the poorest?

A) soil A
B) soil B
C) soil C
D) It would do the same in all soil types.

Question 51

Plants open their stomata to obtain

A) carbon dioxide from air.
B) oxygen from air.
C) sugar from the roots.
D) water from air.

Question 52

Water moves upward in a tree due to

A) the cohesive nature of water.
B) pressure flow.
C) transpiration.
D) the cohesive nature of water and transpiration.

Question 53

If you entirely cover all of a plant's leaves with a very thick wax, which processes would be affected?

A) photosynthesis
B) transpiration
C) Both processes would be affected.
D) Neither process would be affected.

Question 54

Both stages of photosynthesis occur in the daytime in _____ percent of plants.

A) 10
B) 50
C) 90
D) 100

Question 55

The two macronutrients necessary for the production of ATP are

A) calcium and iron.
B) calcium and phosphorus.
C) phosphorus and nitrogen.
D) phosphorus and potassium.

Question 56

There are many examples of unusual plants, such as the pitcher plant that you have studied in Chapter 13. Another highly unique plant is the Hydnora africana , which is indigenous to deserts in southern Africa. The only portion of this plant that is visible above ground is a fairly large fleshy orange and brown flower. There are no leaves or stems evident, but it has an extensive root system that intertwines with the roots of another type of plant. Explain the unusual lifestyle of this species. In addition, name a macronutrient that would not be needed by this plant as much as it would in a traditional plant.