Plant Structures - AP Biology
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Which of the following terms can be described as the green pigment located within chloroplasts?
Which of the following terms can be described as the green pigment located within chloroplasts?
Chlorophyll is what gives plants their green color. The chlorophyll located in the chloroplasts captures the light energy that drives the synthesis of food molecules in the chloroplasts—photosynthesis.
Chlorophyll is what gives plants their green color. The chlorophyll located in the chloroplasts captures the light energy that drives the synthesis of food molecules in the chloroplasts—photosynthesis.
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Which of the following best describes where chloroplasts are primarily located?
Which of the following best describes where chloroplasts are primarily located?
Chloroplasts are found mainly in the cells of the mesophyll, which is the tissue in the interior of the leaf. Stomata are the pores that allow carbon dioxide to enter and oxygen to exit the leaf. The stroma is the dense fluid content of the chloroplast.
Chloroplasts are found mainly in the cells of the mesophyll, which is the tissue in the interior of the leaf. Stomata are the pores that allow carbon dioxide to enter and oxygen to exit the leaf. The stroma is the dense fluid content of the chloroplast.
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Which of the following structures is unique to plant cells?
Which of the following structures is unique to plant cells?
Chloroplasts are organelles in plant cells that conduct photosynthesis; therefore they are unique to plant cells. All the other mentioned organelles can be found in both animal and plant cells.
Chloroplasts are organelles in plant cells that conduct photosynthesis; therefore they are unique to plant cells. All the other mentioned organelles can be found in both animal and plant cells.
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Which of the following can be found in plant cells, but not animal cells?
Which of the following can be found in plant cells, but not animal cells?
Chloroplasts, the site of photosynthesis, are only in plant cells and are not found in animal cells. Ribosomes, a cell membrane, and a mitochondria, however, can be found in both animal and plant cells.
The other structure that may be found in plant cells, but not animal cells, is a cell wall.
Chloroplasts, the site of photosynthesis, are only in plant cells and are not found in animal cells. Ribosomes, a cell membrane, and a mitochondria, however, can be found in both animal and plant cells.
The other structure that may be found in plant cells, but not animal cells, is a cell wall.
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Where in the chloroplasts does the Calvin Cycle of photosynthesis take place?
Where in the chloroplasts does the Calvin Cycle of photosynthesis take place?
The Calvin Cycle occurs in the stroma, the aqueous fluid-filled area of the chloroplast. The stroma can be seen as analogous to the cytoplasm of a cell, in that it is the liquid in which all other substructures reside. The other processes of photosynthesis, the light-dependent reactions, take place in the thylakoid, a membrane-bound substructure within the chloroplast.
The Calvin Cycle occurs in the stroma, the aqueous fluid-filled area of the chloroplast. The stroma can be seen as analogous to the cytoplasm of a cell, in that it is the liquid in which all other substructures reside. The other processes of photosynthesis, the light-dependent reactions, take place in the thylakoid, a membrane-bound substructure within the chloroplast.
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Which process is incorrectly matched with its location?
Which process is incorrectly matched with its location?
During the light dependent reaction, protons are pumped from the thylakoid stroma into the lumen. Then, these protons flow down their electrochemical gradient (from high concentration to low concentration), through the ATP synthase protein, producing ATP.
During the light dependent reaction, protons are pumped from the thylakoid stroma into the lumen. Then, these protons flow down their electrochemical gradient (from high concentration to low concentration), through the ATP synthase protein, producing ATP.
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Where is chlorophyll located?
Where is chlorophyll located?
Chlorophyll is used to capture sunlight during the light dependent reaction; the excited electrons then flow down the electron transport chain located on the thylakoid membrane.
Chlorophyll is used to capture sunlight during the light dependent reaction; the excited electrons then flow down the electron transport chain located on the thylakoid membrane.
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During the light dependent reaction, the proton gradient is established. Where is the concentration of protons the greatest?
During the light dependent reaction, the proton gradient is established. Where is the concentration of protons the greatest?
During the light dependent reaction, protons are pumped from the thylakoid stroma into the lumen. Then, these protons flow down their electrochemical gradient (from high concentration to low concentration), through the ATP synthase protein, producing ATP.
During the light dependent reaction, protons are pumped from the thylakoid stroma into the lumen. Then, these protons flow down their electrochemical gradient (from high concentration to low concentration), through the ATP synthase protein, producing ATP.
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What is the main structural component of a plant cell wall?
What is the main structural component of a plant cell wall?
Cellulose, a polymer of glucose, is the main component of plant cell walls.
Collagen is found in the connective tissues of animals. Chitin is found in the cell walls of fungi. Actin and myosin are the proteins responsible for contraction in muscle cells; actin is also a microfilament in the cytoskeleton. Peptidoglycan is found in the cell walls of bacteria.
Cellulose, a polymer of glucose, is the main component of plant cell walls.
Collagen is found in the connective tissues of animals. Chitin is found in the cell walls of fungi. Actin and myosin are the proteins responsible for contraction in muscle cells; actin is also a microfilament in the cytoskeleton. Peptidoglycan is found in the cell walls of bacteria.
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What is not one of the functions of the plant cell wall?
What is not one of the functions of the plant cell wall?
The plant cell wall is made of cellulose, which makes it rigid. The cell wall offers structural support and protection to the cell and it’s rigid nature maintains the regular shape of the cell. The cell wall is also permeable and allows small molecules, proteins, and nutrients to pass, including water and carbon dioxide.
The plant cell wall is made of cellulose, which makes it rigid. The cell wall offers structural support and protection to the cell and it’s rigid nature maintains the regular shape of the cell. The cell wall is also permeable and allows small molecules, proteins, and nutrients to pass, including water and carbon dioxide.
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What is the role of the vacuole in plant cells?
What is the role of the vacuole in plant cells?
Plant cells contain one very large vacuole that occupies a large percentage of the cell space. The central function of this vacuole is to maintain the turgor pressure of the cell through the continual transport of water and ions in and out of the cell, as needed. Vacuoles store and transport water, waste, and ions too.
Plant cells contain one very large vacuole that occupies a large percentage of the cell space. The central function of this vacuole is to maintain the turgor pressure of the cell through the continual transport of water and ions in and out of the cell, as needed. Vacuoles store and transport water, waste, and ions too.
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Which of the following structures can be found in a plant cell?
Which of the following structures can be found in a plant cell?
Plant cells contain most of the membrane-bound organelles that animal cells do; they do not have cilia, and only some plant cells contain centrioles. Plant cells have additional organelles that animal cells do not, namely chloroplasts and cell walls, for photosynthesis and support, respectively. Virtually all cells have cell membranes.
Plant cells contain most of the membrane-bound organelles that animal cells do; they do not have cilia, and only some plant cells contain centrioles. Plant cells have additional organelles that animal cells do not, namely chloroplasts and cell walls, for photosynthesis and support, respectively. Virtually all cells have cell membranes.
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Which of the following best describes the function of stomata?
Which of the following best describes the function of stomata?
Stomata are the microscopic pores on the surface of leaves. Their function is to allow carbon dioxide into the plant while also allowing oxygen to leave the plant.
Stomata are the microscopic pores on the surface of leaves. Their function is to allow carbon dioxide into the plant while also allowing oxygen to leave the plant.
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Which of the following terms is best defined as the microscopic pores on the leaf?
Which of the following terms is best defined as the microscopic pores on the leaf?
Stomata are the pores on the leaves that allow for carbon dioxide to enter and oxygen to leave the leaf. Stroma, thylakoids, and chlorophyll are all components of the chloroplasts.
Stomata are the pores on the leaves that allow for carbon dioxide to enter and oxygen to leave the leaf. Stroma, thylakoids, and chlorophyll are all components of the chloroplasts.
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Plant and animal cells mostly differ in which way?
Plant and animal cells mostly differ in which way?
The correct answer to this question is Only plant cells have cell walls
Animals notably do not have cell walls. Animal cells, not plant cells, have plasma membranes that contain cholesterol. Both animals and plants have cells with mitochondria and have ribosomes attached to the endoplasmic reticulum. Also only animal cells contain flagella and plant cells do not contain flagella at all.
The correct answer to this question is Only plant cells have cell walls
Animals notably do not have cell walls. Animal cells, not plant cells, have plasma membranes that contain cholesterol. Both animals and plants have cells with mitochondria and have ribosomes attached to the endoplasmic reticulum. Also only animal cells contain flagella and plant cells do not contain flagella at all.
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What structure in plants allows for CO2 and O2 exchange and transpiration?
What structure in plants allows for CO2 and O2 exchange and transpiration?
The stoma allows for gas exchange and transpiration. The stoma usually opens following stimulation by sunlight and closes in low water environments. Other answers are parts of a typical plant, however do not play a role in gas exchange or transpiration.
The stoma allows for gas exchange and transpiration. The stoma usually opens following stimulation by sunlight and closes in low water environments. Other answers are parts of a typical plant, however do not play a role in gas exchange or transpiration.
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In plants, leaves contain specialized pores used for gas exchange. Each pore is formed by a pair of cells that control its closing and opening. What are these cells called?
In plants, leaves contain specialized pores used for gas exchange. Each pore is formed by a pair of cells that control its closing and opening. What are these cells called?
For proper functioning, plants must take in carbon dioxide, expel oxygen, and limit the loss of water vapor. This gas exchange takes place via pores called stomata. These pores are formed by a pair of adjacent cells that can open and close in response to a number of factors. These cells are called guard cells.
The cuticle and epidermis are layers of leaf structure, and do not correspond to specific cell types. The stoma is the name of a single pore itself, not its surrounding cells.
For proper functioning, plants must take in carbon dioxide, expel oxygen, and limit the loss of water vapor. This gas exchange takes place via pores called stomata. These pores are formed by a pair of adjacent cells that can open and close in response to a number of factors. These cells are called guard cells.
The cuticle and epidermis are layers of leaf structure, and do not correspond to specific cell types. The stoma is the name of a single pore itself, not its surrounding cells.
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The layer of cells that separates the a leaf from the environment (the outermost layer of leaf tissue) is called the
.
The layer of cells that separates the a leaf from the environment (the outermost layer of leaf tissue) is called the .
The outer layer of cells on a leaf is called the epidermis. It is composed of the upper epidermis and the lower epidermis and the two have somewhat different structures and function, but both serve to protect the leaf from the outside environment. Spongy mesophyll and bundle sheath cells are both structures on the interior of the leaf, which house chloroplasts. Stomata are found on the outside layer of a leaf, but they are pores that allow gas exchange. Xylem is a transport structure that is used to conduct water and nutrients through a plant.
The outer layer of cells on a leaf is called the epidermis. It is composed of the upper epidermis and the lower epidermis and the two have somewhat different structures and function, but both serve to protect the leaf from the outside environment. Spongy mesophyll and bundle sheath cells are both structures on the interior of the leaf, which house chloroplasts. Stomata are found on the outside layer of a leaf, but they are pores that allow gas exchange. Xylem is a transport structure that is used to conduct water and nutrients through a plant.
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In which of the following leaf tissues does the most photosynthesis take place?
In which of the following leaf tissues does the most photosynthesis take place?
The mesophyll of a leaf contains palisade parenchyma cells (along with other cell types) which contain a high concentration of chloroplasts and are located near the edge of the leaf. These parenchyma cells in the mesophyll perform the bulk of the photosynthesis in a plant, though any part of a plant that contains chlorophyll can photosynthesize, including the spongy mesophyll.
The mesophyll of a leaf contains palisade parenchyma cells (along with other cell types) which contain a high concentration of chloroplasts and are located near the edge of the leaf. These parenchyma cells in the mesophyll perform the bulk of the photosynthesis in a plant, though any part of a plant that contains chlorophyll can photosynthesize, including the spongy mesophyll.
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What is the name of the structure of the leaf that attaches the leaf to the stem?
What is the name of the structure of the leaf that attaches the leaf to the stem?
The petiole attaches the leaf to the stem. Xylem is a tissue that transports water and minerals from the roots to other areas of a plant. Phloem is a tissue that transport water and nutrients from the leaves down to other areas of the plant. A filament is a part of a flower, not a leaf. Mesophyll is the tissue that makes up much of the body of the leaf and is where most photosynthesis takes place, but does not attach the leaf to the stem.
The petiole attaches the leaf to the stem. Xylem is a tissue that transports water and minerals from the roots to other areas of a plant. Phloem is a tissue that transport water and nutrients from the leaves down to other areas of the plant. A filament is a part of a flower, not a leaf. Mesophyll is the tissue that makes up much of the body of the leaf and is where most photosynthesis takes place, but does not attach the leaf to the stem.
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