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Ch. 4: Plants
Review
Name: __________________*** 5 bonus points for parent signature:____________________
photosynthesis- the process by which plants use light, water and CO2 to make sugar
xylem- tubes in vascular plants that carry water and other materials
phloem- tissue or tubes that carry sugar away from the leaves to the rest of the plant
pollen- a grainy yellow powder made at the top of the stamen of the flower
pollination- the moving of pollen from the stamen to the pistil
embryo- the baby plant growing inside the seed
spore- a single plant cell that can develop into a new plant
tropism- ways that plants change their direction of growth in response to the environment
1. How are plant spores different from seeds?
Spores- single celled; many inside spore case; not made by fertilization (asexual reproduction)
Seeds- multi-celled; protected by seed coat; made by fertilization
2. What is the function of the stoma (pore)?
Lets gases in and out of the leaf
3. What part of a leaf helps to protect the plant?
Epidermis
4. A leaf is an organ.
5. Name the components for photosynthesis to occur and the product.
Sunlight + CO2+ Water --- Sugar + Oxygen (photosynthesis)
6. Name some plants that reproduce using spores.
Mosses, ferns & duckweed
7. Explain what cellular respiration is.
The process in which cells take in water and food to make energy. CO2 and water are given
off. This process takes place in the mitochondria.
8. Label the parts of the flower.
9. Compare and contrast monocots and dicots.
Monocots- one area of stored food (one cotyledon); veins are parallel; fibrous root system
Dicots- two areas of stored food (two cotyledons); veins that branch out; usually tap roots
10. What is the correct name for the seed leaves of the plant embryo?
cotyledons
11. Explain…
a. thigmotropism- a plants growth in response to touch. Ex. Kudzu, grape vine
b. phototropism- a plants growth in response to a source of light. Ex. Having to turn a
plant in a windowsill because it grows toward the window
c. gravitropism- the growth of a plant in response to gravity. Ex. The roots grow down
toward soil and the stem grows up toward the sun
12. Why do plants have more in them sugar during the day than at night?
During the day because the sun is shining and that is when a plant can photosynthesize. During
this process the plant makes sugar. At night the plant has to use its stored sugar.
13. Name the three types of asexual reproduction in plants that we learned.
Spores, runners & budding
14. Describe what happens from the time pollen lands on the top of the pistil until a seed forms.
Once pollination takes place a tube grows from the pollen down to the egg cells in the bottom of
the pistil. Special cells called sperm cells travel down through the tube and join the egg cells
and a seed forms