Unit 8
The energy required for photosynthesis is provided by
Sunlight
Which of the following accurately describes the order of the processes that make up photosynthesis?
Sunlight is absorbed, light-dependent reactions produce ATP and NADPH, Calvin cycle produces sugar
The biogeochemical cycles move matter through the living and nonliving components of the ecosystem. What happens to the amount of matter on Earth as the elements move through these cycles?
The amount of matter remains constant as it cycles through the living and nonliving systems.
Which of the following best describes the path of carbon in the Calvin cycle?
The carbon molecules are constantly in various stages of the reaction due to the nature of any cycle
Which of the following is a common trait of nonvascular plants?
The cells must have direct contact with water.
Why do plants appear green?
The pigments often reflect rather than absorb green wavelengths of light, which causes the plant to appear green.
Chlorophyll pigments are contained in sacks called _____.
Thylakoids
The vascular tissue consists of tube like structures located in the roots, stems, and leaves. Which of the following best describes the purpose of the vascular tissue in plants?
Transports water and nutrients through all parts of the plant.
During the light dependent reactions--water is split, releasing oxygen and forming the NADPH by removing an electron and H+ ion from water and adding it to the electron carrier NADP+.
True
Evaporation is the process that puts water into the atmosphere.
True
Precipitation is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth.
True
The Calvin Cycle, or dark reactions, occurs in the stroma.
True
The products of the light reactions, ATP and NADPH are used in the dark reactions.
True
The water cycle is drawn as a circle because the same water gets used over and over.
True
You can determine the amount of energy in an electromagnetic wave based on wavelength and frequency.
True
Plants have the ability to use energy from sunlight to make organic molecules through the process of _______________.
photosynthesis
The glucose that is produced during the Calvin cycle will be used for all of the following EXCEPT:
plants will use the glucose as a reactant in photosynthesis.
____________ absorbs light for photosynthesis.
the pigments that make up the chlorophyll
How do seeds make plants better adapted for survival?
All of these.
What is the role of plants in the carbon cycle?
All of these.
As animals and plants die, they are broken down by decomposers and nitrogen is released as ammonia, this process is called _____.
Ammonification
Autotrophs remove _____ from the atmosphere.
Carbon dioxide
Plants get carbon from what chemical in the air?
Carbon dioxide
Autotrophs utilize the pigment _____ to capture the sun's energy.
Chlorophyll
During cellular respiration, carbon dioxide (CO2) is used by plants to make carbohydrates.
False
Increasing the oxygen and decreasing the carbon dioxide around a plant, causes the rate of photosynthesis to increase.
False
Which of the following is NOT one of the roles of an earthworm in the biogeochemical cycles?
It converts carbon dioxide into organic molecules through photosynthesis.
What is the correct sequence of events during photosynthesis?
Light absorption, electron transport chain, chemiosmosis, Calvin cycle
The sugar that is produced during photosynthesis will provide energy and the building blocks of carbon, hydrogen, and oxygen that is needed for ________________.
Metabolism
Which of the following does NOT change the rate of the light reactions?
Oxygen levels in the atmosphere
Which of the following statements about photosynthesis and cellular respiration is true?
Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.
Which of the following describes the role of plants in the oxygen cycle?
Plants release oxygen as a product of photosynthesis.
The dermal tissue is a waxy covering on the leaves and stems of plants. Which of the following most accurately describes the purpose of the dermal tissues in plants?
Serves as a protective covering to prevent water loss in the plant.
The ground tissue consists of the plants cells that can be seen when you look at the leaves under a microscope. Which of the following most accurately describes the purpose of the ground tissue in the plant?
Serves as the site of photosynthesis and storage for the plant.
