Science Test on Chapter 3 Study Guide

Students will receive a copy of the questions and answers below. This test will cover concepts taught throughout chapter 3 (5 lessons).

Students will have time to review in class on Tuesday, Wednesday, and Thursday. The test is on Thursday the 25th. Study guides CANNOT be used on the test. Students MUST study.

Lesson 1
1. How would you classify a pine tree? As a nonflowering plant
2. How can you classify a rosebush? As a plant that has a prickly stem
3. What kind of tree has cones and leaves that look like needles? Conifer trees

Lesson 2
4. What might happen to a plant if the tiny holes on the surface of the leaves were covered? Leaves would NOT produce much oxygen and sugar.
5. Leaves turn carbon dioxide and water into what 2 things? Sugar and oxygen
6. How do leaves help plants? They help make food through photosynthesis.
7. Where in a plant can you find tubes that move nutrients from the roots to the leaves? Stem
8. What do plants need for photosynthesis? Carbon dioxide, water, and sunlight
9. What do the tall thin parts inside of a leaf do? Take in sunlight

Lesson 3
10. Why should you NOT worry about which direction to plant seeds so that the roots grown down into the soil? Roots respond to gravity. No matter which direction a seed is planted, the roots will grow down toward Earth's center.
11. What structures or parts help keep a cactus from losing too much water? Thick, waxy stems
12. How are roots important to a plant? They store food and take in water.
13. A cactus stores the most water in its? Stem
14. What will happen if you plant a bean seed upside down? The roots will still grow down.
15. Which plant has a taproot? Carrot
16. Why do plant roots grow toward Earth's center? Gravity pulls them
17. What is MOST LIKELY the reason a plant bends to the side? It is turning toward the sun.

Lesson 4
18. How do confer plants make seeds? Pollen from a small cone sticks to a large cone and seeds grow under each scale.
19. When seeds begin to grow they? Germinate
20. A new plant that has just grown out of the soil is a? Seedling
21. What do bees do to flowers? Pollinate
22. After taking a walk through a field, Jenna picked burs off her socks and dropped them. What did she do by dropping them? She helped to scatter a plant's seeds.
23. A young plant beings to grow after a seed germinates. What is this young plant called? Seedling  

24. Plants need water, air, food, and space to live and grow. Tell how 2 parts of a plant help it meet these needs. (lessons 2, 3 and 4)
Water enters a plant through the roots. Water is moved from the roots to the leaves by the stems.
Air- Plants take in carbon dioxide from the air through tiny holes in leaves.
Food- Leaves use air, water, and energy from sunlight to make sugar, or food for the plant. Food moves from the leaves to other parts of the plant through the stem.
Space- After plants make seeds, the seeds are scattered. Some plants are scattered far from the parent plant. This gives new plants space to grow.

Lesson 5
25. How are flowering and coniferous plants alike? They begin the life cycles with a seed that germinates.