Plants Exam

After studying photosynthesis, Jesse drew the illustration of a tomato plant shown below. Which arrow represents where the primary release of oxygen (O2) occurs?

• A. 1

• B. 2

• C. 3

• D. 4

Patrick and Estella added water plants to their goldfish bowl and placed the bowl in direct sunlight. A few hours later, they noticed the underwater plants had tiny air bubbles on the surface of the leaves. What caused the air bubbles to form on the leaves?

• the process of evaporation

• the process of photosynthesis

• goldfish breathing on the plants

• an increase in water temperature

The stem is an important part of many plants. Which of the following is most similar to the role performed by the stem of a plant?

• an anchor holding a boat in place

• a snack company producing energy bars

• a colorful sign attracting people into a store

• an elevator transporting supplies from one floor to another

4. Plants are classified according to their structures. The plant pictured below reproduces without seeds and has simple tubes for transporting water.

• A. Fern

• B. Moss

• C. Pine

• D. Oak

In which group of plants would this plant be classified?

• spore-producing plants with many leaves

• plants that produce fruit on their leaves

• plants that carry seeds on their leaves

• flowering plants with many leaves

Fungus is found on the forest floor. This fungus is an example of-

• predator

• consumer

• decomposer

• producer

The roots of the prickly pear cactus spread out in a wide underground network. How does this type of root system benefit a prickly pear cactus?

• By producing fruit and storing water

• By capturing sunlight and getting rid of waste materials

• By absorbing water and supporting the plant in loose, sandy soil

• By releasing nutrients into the sandy soil and taking in oxygen

Tropical climates have warm temperatures and abundant sunlight all year. What must be available for plants in these climates to make their own food throughout the year?

• Bacteria

• Birds

• Shade

• Water

Which of the following is the main role of flowers found on most flowering plants?

• to take in air

• to produce seeds

• to absorb nutrients

• to protect the stem

Photosynthesis must occur in plants in order for them to survive. Which of the following is the major product of photosynthesis that helps the plants survive?

• carbon dioxide (CO2)

• chloroplast

• sugar

• sunlight