Question

question 7
____ is the ability to do work.
a fuel
b conservation
c energy
d photosynthesis
e motion
question 8
the primary light - absorbing pigment in photosynthesis is
a chlorophyll.
b carotenoid.
c thylakoid.
d stroma.
e phospholipids.

Explanation:

• For Question 7: By definition in science, energy is the ability to do work. Fuel is a source of energy, conservation is about preserving resources, photosynthesis is a process to convert light - energy into chemical - energy, and motion is a result of applied energy.
• For Question 8: Chlorophyll is the main pigment in plants that absorbs light energy for photosynthesis. Carotenoids are accessory pigments, thylakoids are membrane - bound structures in chloroplasts, stroma is the fluid part of chloroplasts, and phospholipids are components of cell membranes.

Answer:

Question 7: C. Energy
Question 8: A. chlorophyll