The Laboratory
This glass container is used to hold or heat liquids during experiments.
What is a beaker?
Describe one way carbon moves from animals to the atmosphere.
What is through respiration or decomposition?
What is the main source of energy for photosynthesis?
What is sunlight?
Explain how the structure of a leaf is adapted to absorb maximum light for photosynthesis.
What is the leaf is thin, wide, and flat with many chloroplasts and air spaces to allow light and gas movement?
Fossil fuels such as coal and oil are formed from what?
What are the remains of ancient plants and animals?
Why is the leaf boiled in alcohol during the starch test?
What is to remove chlorophyll so the color change with iodine can be seen clearly?
Explain how magnesium, nitrate, and the carbon cycle work together to keep ecosystems balanced.
What is magnesium enables photosynthesis, nitrate supports plant growth, and both help plants absorb and store carbon, maintaining CO₂ balance in the atmosphere?
Which test is used to check if a leaf has made starch after photosynthesis?
What is the iodine test?
Describe how water and minerals reach the leaf for photosynthesis.
What is they travel through the xylem in the veins from the roots to the leaf?
What can happen if a very large asteroid hits Earth?
What is it can cause explosions, craters, or climate changes?
In an experiment to test for photosynthesis through gas production, which gas is released by the leaf when exposed to light?
What is oxygen?
In photosynthesis, carbon dioxide is changed into this type of compound inside plants.
What is glucose or carbohydrates (carbon compounds)?
Write the word equation for photosynthesis.
What is carbon dioxide + water → glucose + oxygen (with light and chlorophyll)?
These tall, tightly packed cells near the top of the leaf contain many chloroplasts.
What are palisade cells?
Explain how burning fossil fuels contributes to global warming.
What is it releases greenhouse gases like CO₂ that trap heat in the atmosphere?
This piece of lab equipment produces a flame and is used for heating substances.
What is a Bunsen burner?
This mineral is needed by plants to make chlorophyll so they can trap light energy for photosynthesis.
What is magnesium?
Why is chlorophyll important for photosynthesis?
What is it absorbs light energy needed to convert CO₂ and water into glucose?
Explain how the structure of the palisade cell helps in photosynthesis
What is it has many chloroplasts to absorb light and is tightly packed near the surface to catch more sunlight?
Give one long-term effect of climate change on ecosystems.
What is loss of biodiversity, rising sea levels, or melting ice?
Describe how you can test a leaf for starch after photosynthesis.
What is by boiling the leaf in water, then alcohol, rinsing it, and adding iodine to see if it turns blue-black?
How does combustion disturb the balance of the carbon cycle?
What is it releases large amounts of stored carbon into the atmosphere faster than plants can absorb it, increasing CO₂ levels?
During the experiment, which observation shows that a leaf has produced oxygen?
What is bubbles forming in the water around the plant?
These small openings on the underside of the leaf allow gases to move in and out.
What are stomata?
What is a large rock that travels in space called?
What is an asteroid?