Standardized Test Prep

Multiple Choice

1. Which of the following is a basic requirement of plants?

   1. sunlight

   2. carbon dioxide

   3. water

   4. all of the above

2. What stage in the alternation of generations is represented by fern fronds?

   1. sporophyte

   2. female gametophyte

   3. male gametophyte

   4. zygote

3. Which of the following is NOT a characteristic of dicots?

   1. branched veins

   2. taproot

   3. parallel veins

   4. two cotyledons

4. Which of the following is a structure associated with gymnosperms?

   1. flower

   2. cone

   3. fruit

   4. enclosed seed

5. The mature plant ovary is also referred to as the

   1. gymnosperm.

   2. pollen grain.

   3. fruit.

   4. cotyledon.

6. Plants cultivated for food are mostly

   1. gymnosperms.

   2. woody plants.

   3. angiosperms.

   4. bryophytes.

Questions 7–9

A group of students placed a sprig of a conifer in a beaker of water. They measured the amount of oxygen given off during a set period of time to determine the rate of photosynthesis. They changed the temperature of the water in the beaker using an ice bucket and a hot plate. Their data are summarized in the graph below.

d

7. What is the independent variable?

   1. light intensity

   2. temperature

   3. oxygen bubbles

   4. photosynthesis rate

8. Which variable(s) should the students have held constant?

   1. plant type

   2. temperature

   3. light intensity

   4. plant type and light intensity

9. What can you conclude based on the data?

   1. The higher the temperature, the more oxygen bubbles are released.

   2. There is an optimum temperature for photosynthesis in this species of conifer.

   3. All plants are most efficient at 30°C.

   4. The lower the temperature, the more oxygen bubbles are released.

Open-Ended Response

10. Explain why seeds were an important adaptation for the success of plants on Earth.

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