BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 6, Problem 2CT
While gazing into an aquarium, you observe bubbles coming from anaquatic plant (left). What are the bubbles?
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10°C water
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Why are bubbles counted in this experiment, and what do they represent?
make a line graph showing the difference in the number of oxygen gas bubbles released by the plant under different light intensities and water temperatures.
Which light intensity and water temperature caused the plant to produce the most amount oxygen gas during the process of photosynthesis? Why
Which light intensity and water temperature caused the plant to produce the least amount oxygen gas during the process of photosynthesis? Why?
This apparatus was used by a student, in a brightly lit room, to measure the rate of water
loss from a leafy shoot. He measured how far the bubble moved in five minutes. He
measured this three times.
The results are shown in the table.
i.
Measurement Distance moved by the bubble in cm
1
2
Table 9.1
3
11.9
12.6
13.0
Use these results to calculate the mean (average) rate of water loss in cm per minute.
Show your working.
cm per minute
(d) Given below is an apparatus used to study
a particular process in plants. Study the
same and answer the questions that follow:
“香里
Leafy
Reservoir
shoot
Air bubble
Graduated capillary tube
Coloured
water
(i) Name the apparatus.
(ii) Mention one limitation of this apparatus.
(iii) Which phenomenon is studied with the
help of this apparatus ?
(iv) What is the function of the part marked
'reservoir' ?
(v) What is the role of the air bubble in the
experiment ?
Chapter 6 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 6 - A cat eats a bird, which ate a caterpillar that...Ch. 6 - Plants use ________ as an energy source to drive...Ch. 6 - In plants, photosynthetic eukaryotes, and...Ch. 6 - Most of the carbon that land plants use for...Ch. 6 - Which of the following statements is incorrect? a....Ch. 6 - When a photosystem absorbs light energy, ________...Ch. 6 - In the light-dependent reactions, _______. a....Ch. 6 - Prob. 8SACh. 6 - Prob. 9SACh. 6 - Prob. 10SA
Ch. 6 - The Calvin-Benson cycle starts with _______. a....Ch. 6 - Which of the following substances does not...Ch. 6 - Closed stomata ________. a. limit gas exchange c....Ch. 6 - In C3 plants, _______ makes sugar production...Ch. 6 - Match each term with its most suitable...Ch. 6 - About 200 years ago, Jan Baptisa van Helmontwanted...Ch. 6 - While gazing into an aquarium, you observe bubbles...Ch. 6 - A C3 plant absorbs a carbon radio isotope...Ch. 6 - In 2005, a new species of green sulfur bacteria...
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- Students filled three identical flasks with water and placed elodea, a type of aquatic plant, in each flask. The students adjusted the light intensity that each plant received by wrapping some of the flasks in either screen mesh or foil. The screen mesh allowed only some light to pass through, and the foil allowed no light to pass through. The students recorded the amount of dissolved oxygen, in milligrams per liter, in each flask at the start of the experiment and after twelve hours of light exposure. The data are shown in the table. Drag a label corresponding to a treatment to the correct column header in the table to indicate the beaker from which each piece of data was most likely collected. Light Source Oxygen Sensor Screen Mesh No Covering Screen Foilarrow_forward6. Tim is observing xylem vessel elements under the microscope. He initially used the low power objective (LPO) to search for the vessel elements formed in his specimen (Fig.3 A), he. He then wanted to see the vessel elements in greater detail, so he used the high power objective (HPO). Although he didn't have any trouble in resolving the vessel elements using the HPO he wanted to try using the oil immersion objective (OI0). He noticed that he needed to use the fine adjustment knob to focus at two different groups of vessel elements one at a time (Fig. 5 B and C). He also noted that he cannot completely resolve the specimen under the O10 when it should appear clearer as shown by his instructor previously. A B Figure 5. Vessel elements developed from cassava pith in response to synthetic plant hormones under LPO (A) and O10 (B and C). a. Explain why Tim can only focus on one group of vessel elements at a time when he used the O10. (Explain in 2 sentences max) b. Give a reason why Tim…arrow_forwardSlide 4: I need help counting how many stomata there is in this sample.arrow_forward
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