Factors Influencing Growth

While out hiking in the woods, Ian sees several wild grapevines wrapped around some tree trunks and branches. He notices the broad leaves and curling, forking tendrils of the vines that loop around the tree branches. This makes him think about the factors that influence the way things grow. Which factors contribute to the way organisms grow and develop? Choose the three that apply.

• genetics

• size

• response to stimuli

• structures

• access to resources

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Chemicals that affect growth and development.

• hormones

• dormancy

• auxin

• tropism

hormone that speeds up the rate at which plant cells grow and controls a plant's response to light.

• hormones

• dormancy

• auxin

• tropism

Vivienne visits a botanical garden in a nearby city and sees a plant commonly called Touch-Me-Not. She touches the tip of the leaf of this plant, known as Mimosa pudica, with her finger and watches the leaves close. She later learns that chemicals trigger this reaction. Plants respond to stimuli in different ways. Grows toward light is an example of?

• positive gravitropism

• negative gravitropism

• thigmotropism

• phototropism

Which of the following is a genetic factor that affects an organism's growth?

• Temperature

• Nutrition

• Genes inherited from parents

• Amount of sunlight

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How do environmental factors influence the growth of plants?

• By altering their genetic makeup

• By providing the necessary conditions for growth

• By changing the color of the plants

• They have no effect

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Which of the following best describes how environmental factors and genetic makeup interact to determine the height of a human?

• Environmental factors have no impact on height, which is determined solely by genetics.

• Height is determined solely by environmental factors like diet and exercise.

• Genetics set the potential for height, while environmental factors such as nutrition can influence whether this potential is reached.

• Height is randomly determined and not influenced by genetics or environmental factors.

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How can pollution affect the growth of organisms in an ecosystem?

• By increasing their growth rate

• By having no effect

• By decreasing their growth rate or causing mutations

• By improving their genetic makeup

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What role does water play in the growth of plants?

• It has no role

• It acts as a genetic carrier

• It is essential for photosynthesis and nutrient transport

• It changes the genetic structure of plants

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Which of the following environmental factors can cause stress that affects an organism's growth?

• Genetic diversity

• Social interactions

• Extreme temperatures

• Inherited traits

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