Plants and Their Needs — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. What is the correct order of a plant's life cycle?
A) flower, seed, sprout, adult plant
B) seed, sprout, adult plant, flower
C) adult plant, seed, flower, sprout
D) sprout, flower, seed, adult plant
A plant starts as a seed, pushes out a sprout, grows into an adult plant with stems and leaves, and then finally makes flowers that can produce new seeds.
2. Why do some plants have colorful flowers?
A) To scare away animals.
B) To attract insects that carry pollen.
C) To hide from the sun.
D) To store extra water.
Bright petals act like a "come here!" sign for bees and butterflies, and when these insects visit they carry pollen between flowers so seeds can form.
3. What would happen if a plant never got any water?
A) It would grow faster.
B) It would turn blue.
C) It would wilt and die.
D) It would grow more flowers.
Without water, the plant's stems and leaves lose their firmness, droop over, and eventually dry up because water is what keeps every part of the plant alive.
4. Which part of the plant holds it upright and carries water?
A) the flower
B) the leaf
C) the stem
D) the seed
The stem works like a strong pipe — it stands the plant up tall and also has tiny tubes inside that carry water from the roots up to the leaves.
Part B: Fill in the Blank
Write the correct answer on each line.
1. After a flower is pollinated, it begins to make seeds.
Once pollen reaches the inside of a flower, the flower starts building seeds so future plants can grow from them — that is the whole point of pollination.
2. A plant that loses all its leaves cannot make food from sunlight.
Leaves are the plant's food factories where sunlight, air, and water get turned into sugar; without them, the plant has no way to feed itself.
3. The life cycle of a plant starts and ends with a seed.
A plant begins life as a seed, and once it grows up it flowers and creates new seeds, making the cycle go around and around forever.
4. Pollen is carried from flower to flower by insects or the wind.
Pollen is too light to walk on its own, so some plants let bees and butterflies carry it while others simply let the wind blow their pollen to nearby flowers.
5. A fruit grows around the seeds to protect them.
Fruit is like a soft wrapper that shields seeds from bumps and bugs, and when animals eat the fruit they help spread the seeds to new places.