Name:______________________________
Date:______________
Per:______________
WS 1.3 – Plants and Photosynthesis
1. What characteristics classify moss, ferns, cone plants, and flowering plants as plants?
2. Are all plants photosynthetic?
Identify whether or not the organism alternates generations in its life cycle (Y) or does not alternate generations in its
life cycle (N)
3. ________ Moss that has a sporophyte and gametophyte generation in its life cycle
4. ________ Gymnosperms that produces sperm and egg in one phase and spores or seeds in another phase
5. ________ Humans that produces sperm cells or eggs
6. ________ Flowering plants that have a portion of their life cycle where the cells produces have half the DNA and
another portion of its life cycle where all the cells have all of its DNA
7. ________ Animals that sexually reproduce
Fill in the life cycle of moss by answering the questions
10. The first cells of
the gametophyte
generation.
8. The portion
of the life
cycle that
produces
spores.
9. The portion
of the life
cycle that
produces
gametes.
13. The process of sperm unifying with
egg.
11. Part of the
life cycle that
makes eggs.
12. Part of the
life cycle that
makes sperm.
8. Why do plants photosynthesize?
9. What do plants need to make starches and glucose?
10. What do plants release when making their own food?
11. What part of photosynthesis uses light energy to split water into hydrogen and oxygen?
12. What allows plants to absorb light energy for the light reaction?
13. Use the colors of light absorbed and reflected by chlorophyll to sketch a rough diagram of the absorption spectrum
of chlorophyll:
Absorbs Best
Absorbs Worst
Violet
Blue
Green
Yellow
Orange
Red
14. What part of photosynthesis absorbs carbon dioxide to produce glucose?
15. Put a box around the reactants and products of the light reaction, and a circle around the reactants and products of
the dark reaction:
6CO2 + 6H2O  C6H12O6 + 6O2