Question

biochemical pathway used by plants to make glucose.

1. j j__________ showed that plants only produce oxygen when exposed to light.
2. j v h________ carefully measured the mass of a growing plant and concluded the increase came from water.
3. orange and yellow colored pigments called _c___________ absorb different wavelengths of light and help chlorophyll use more of the sun’s energy.
4. t_____________, amount of _w_______, and _l_______ intensity are all factors that affect the rate of photosynthesis.

Explanation:

1. Jan Ingenhousz demonstrated plants produce oxygen only in light.
2. Jan Baptist van Helmont measured plant mass increase from water.
3. Carotenoids (orange/yellow pigments) expand light absorption for chlorophyll.
4. Key factors affecting photosynthesis rate include temperature, water amount, and light intensity.

Answer:

1. Jan Ingenhousz
2. Jan Baptist van Helmont
3. carotenoids
4. Temperature, Water, Light