SAT Biology Practice Test 15: Ecology, Part 2

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Question 4 questions

Time 3 minutes

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1. Which processes remove nitrogen from the atmosphere?

I. Fertilizer production

II. Eutrophication

III. Nitrogen fixation

IV. Denitrification

A. I and II
B. I and III
C. I and IV
D. II and III
E. II and IV

2. The net primary production (NPP) of a stable lake ecosystem is roughly equal to the amount of

A. phytoplankton present in the photic zone
B. phytoplankton consumed by heterotrophs
C. dissolved nutrients used by phytoplankton
D. dissolved oxygen used by phytoplankton
E. dissolved oxygen used by all consumers

3. Which type of biome is found at the lowest latitudes?

A. Rain forest
B. Desert
C. Chaparral
D. Tundra
E. Taiga

4. Which of these are plant adaptations to hot, dry climates?

I. CAM

II. Mycorrhizae

III. C4photosynthesis

A. I only
B. II only
C. I and II
D. I and III
E. I, II, and III