Plant Life Cycles

Grade 3 Science Worksheet

Circle the answer.

1. 1.

   Look at the tomato plant life cycle. Which stage is missing?

   • flower
   • leaf
   • root
   • stem
2. 2.

   Which stage of a strawberry plant can make new seeds?

   • the adult plant with flowers
   • the young plant with leaves
   • the seedling
   • the seed in the soil
3. 3.

   What must happen to a flower before it can make seeds?

   • its petals must fall off first
   • it must lose all its leaves
   • pollen must reach it
   • its roots must stop growing
4. 4.

   How is a pine tree's life cycle different from an apple tree's?

   • pine seeds form in cones, not in fruit
   • pine trees never make seeds
   • pine trees skip the seedling stage
   • pine trees grow from spores
5. 5.

   A fern does not make seeds. What does a fern use to start new ferns?

   • spores
   • cones
   • bulbs
   • fruit
6. 6.

   Wind blows dandelion seeds far from the parent plant. How does this help?

   • the seeds turn into flowers right away
   • the seeds grow faster in the air
   • the parent plant grows more flowers
   • new plants get space to grow
7. 7.

   Maple seeds have wings and spin as they fall. What does this help the seeds do?

   • grow leaves while falling
   • travel away from the parent tree
   • stay right under the parent tree
   • hold more water
8. 8.

   A sunflower dies after it makes seeds. Does its life cycle end?

   • no, the dead plant grows again from its stem
   • yes, seeds cannot grow without the parent
   • no, its seeds can grow into new sunflowers
   • yes, the cycle stops when it dies
9. 9.

   Which stage comes right before an apple forms on a tree?

   • the seed
   • the apple blossom
   • the seedling
   • the young tree
10. 10.

    Corn grows from seed to sprout to a tall plant with ears of corn. What happens next?

    • the tassels grow into roots
    • the kernels can be planted as new seeds
    • the corn turns back into a sprout
    • the leaves become new kernels