What are the independent and dependent variables in plant growth?

What are the independent and dependent variables in plant growth?

The amount that the plants grow depends on the amount of sun they get. The independent variable is what you change, and the dependent variable is what happens because of the change. Examples include: how much water each plant gets, what kind of soil the plants are in, and the temperature of the air.

What is an independent variable in plants?

An independent variable is the variable the experimenter controls. Basically, it is the component you choose to change in an experiment. This variable is not dependent on any other variables. For example, in the plant growth experiment, the independent variable is the light color.

What are some independent variables that can influence plant growth?

Independent variables could include sunlight, rainfall, soil nutrients, and topographic location. Competition among trees could also be considered an independent variable. Environmental disturbances such as construction, fire, insects, weather patterns, and storms can also greatly influence tree growth.

How does the amount of light affect plant growth dependent variable?

Sunlight is related to plant growth. If the amount of sunlight is increased, then plant growth will increase. The hypothesis that plant growth increases as the amount of sunlight increases was supported by the data.

What is control independent variable and dependent?

Independent variable – the variable that is altered during a scientific experiment. Dependent variable – the variable being tested or measured during a scientific experiment. Controlled variable – a variable that is kept the same during a scientific experiment.

Is water salinity a dependent variable?

VARIABLES: The independent variable is the different amounts salt that will be added to the water (what is done by the scientist). The dependent variable is the boiling temperature of the water (what is being measured). III: HYPOTHESIS: If salt is added to water then, the boiling temperature is lowered.

What is the dependent variable in photosynthesis experiment?

Dependant variable – the number of oxygen bubbles given off (the rate of photosynthesis). Controlled variables – the size of the pondweed, the volume of water used and its temperature.

How does the amount of sunlight affect a plants growth?

Thus the amount of sunlight a plant receives will effect its rate and amount of growth. Other factors such as temperature and available soil nutrients are important, but without sunlight the plant cannot survive. Beans planted and keep in the dark will germinate and begin to grow, but this is due to the store of energy in the bean seed.

Can a plant survive in the absence of sunlight?

Dependent on the type of plant and its natural habitat, the amount of sunlight required for healthy growth will vary, but no plant will survive for long in the absence of light. For example, no green plants have been found in any of the world’s deep cave systems. Plants are classed as autotrophs, which means that they produce their own food.

Why do plants grow faster in the tropics?

In the tropics, with lots of sunlight and warmth, plants can grow much faster than in colder northern climates, where light levels are also much reduced. the other limiting factor in plant growth, of course, being the availability of water. Plants have adapted to this need for light in different ways.

Why do plants need to be in the Sun?

With the advent of time-lapse photography it has been shown that plants can actively ‘follow’ the sun through the course of a day. Leaves move to always present the maximum amount of leaf area to the suns rays. It is this need for sunlight, through the presence of chlorophyll that gives the majority of plants their green colour.