A Botanist Discovers a Plant That Lacks the Ability to Form

question 54

Multiple Choice

A botanist discovers a plant that lacks the ability to form starch grains in root cells, yet the roots still grow downward. This evidence refutes the long-standing hypothesis that

• A) falling statoliths trigger gravitropism.
• B) starch accumulation triggers the negative phototropic response of roots.
• C) starch grains block the acid growth response in roots.
• D) starch is converted to auxin, which causes the downward bending in roots.
• E) starch and downward movement are necessary for thigmotropism.

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Definitions:

Physiological Needs

Physiological needs are the basic necessities of life required by the body for survival, including food, water, shelter, and sleep, as outlined in Maslow's hierarchy of needs.

Self-Transcendence

Describes the experience of going beyond one's own self-interests, limitations, and experiencing a greater sense of connection to others and the world.

Protein

Large, complex molecules essential to the structure, function, and regulation of the body's tissues and organs, made up of amino acids.

Fat Cells

Biological cells that store energy in the form of fat, also known as adipocytes, playing critical roles in metabolism and energy homeostasis.