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矮壮素的作用机制,可阻遏内源赤霉素的合成,促进细胞激动素含量的增加,而细胞激动素的增多对开花坐果有利。
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【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
Interacting with one another to produce different chemicals.
B.
Pleasing specific chemical messengers from a plants cell walls.
C.
Reoducing the hormones that cause plant cells to differentiate to perform different functions.
D.
Influencing the development of a plant’s cells by controlling the expression of the cell’s genes.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
trace the passage of chemicals through the walls of cells.
B.
pinpoint functions of other plant hormones.
C.
artificially control specific aspects of the development of crops.
D.
alter the complement of genes in the cells of plants.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
trace the passage of chemicals through the walls of cells.
B.
pinpoint functions of other plant hormones.
C.
artificially control specific aspects of the development of crops.
D.
alter the complement of genes in the cells of plants.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
trace the passage of chemicals through the walls of cells.
B.
pinpoint functions of other plant hormones.
C.
artificially control specific aspects of the development of crops.
D.
alter the complement of genes in the cells of plants.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
way in which hormones are produced by plant
B.
hierarchical nature of the functioning of plant hormones.
C.
differences between the best-known plant hormones.
D.
concept of pleiotropy as it is exhibited by plant hormones.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
way in which hormones are produced by plant
B.
hierarchical nature of the functioning of plant hormones.
C.
differences between the best-known plant hormones.
D.
concept of pleiotropy as it is exhibited by plant hormones.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
To stimulate a particular plant cell to become part of a plant’s root system.
B.
To activate enzymes that release specific chemical messengers from plant call walls.
C.
To duplicate the gene complement in a particular plant cell.
D.
To produce multiple effects on a particular subsystem of plant cells.
相关题目：
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
Interacting with one another to produce different chemicals.
B.
Pleasing specific chemical messengers from a plants cell walls.
C.
Reoducing the hormones that cause plant cells to differentiate to perform different functions.
D.
Influencing the development of a plant’s cells by controlling the expression of the cell’s genes.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
trace the passage of chemicals through the walls of cells.
B.
pinpoint functions of other plant hormones.
C.
artificially control specific aspects of the development of crops.
D.
alter the complement of genes in the cells of plants.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
trace the passage of chemicals through the walls of cells.
B.
pinpoint functions of other plant hormones.
C.
artificially control specific aspects of the development of crops.
D.
alter the complement of genes in the cells of plants.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
trace the passage of chemicals through the walls of cells.
B.
pinpoint functions of other plant hormones.
C.
artificially control specific aspects of the development of crops.
D.
alter the complement of genes in the cells of plants.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
way in which hormones are produced by plant
B.
hierarchical nature of the functioning of plant hormones.
C.
differences between the best-known plant hormones.
D.
concept of pleiotropy as it is exhibited by plant hormones.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
way in which hormones are produced by plant
B.
hierarchical nature of the functioning of plant hormones.
C.
differences between the best-known plant hormones.
D.
concept of pleiotropy as it is exhibited by plant hormones.
【单选题】A Hierarchy of Hormones All of the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and from structures as different as roots, stems, lea...
A.
To stimulate a particular plant cell to become part of a plant’s root system.
B.
To activate enzymes that release specific chemical messengers from plant call walls.
C.
To duplicate the gene complement in a particular plant cell.
D.
To produce multiple effects on a particular subsystem of plant cells.
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