Question

value: 10
all plants are considered
a. autotrophs
b. heterotrophs
value: 10
_____ contain the highest energy in the electromagnetic spectrum.
a. violet
b. ultraviolet
c. x rays
d. gamma rays
e. infrared
value: 10
what are the reactants of photosynthesis?
a. carbon dioxide and oxygen
b. carbon dioxide and glucose
c. carbon dioxide and water
d. calcium and iron
e. proteins and lipids
f. glucose and oxygen

Explanation:

1. Plants can produce their own food through photosynthesis, so they are autotrophs. Heterotrophs rely on other organisms for food.
2. Gamma - rays have the shortest wavelength and highest frequency in the electromagnetic spectrum, thus the highest energy.
3. The chemical equation for photosynthesis is \(6CO_2 + 6H_2O

ightarrow C_6H_{12}O_6+6O_2\), so the reactants are carbon dioxide and water.

Answer:

1. a. autotrophs
2. d. Gamma rays
3. c. Carbon dioxide and water