Biology  by Bradford
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8.1 Responses to the Environment: revision map

The subtopic in the middle and four tasks round it: label a diagram, complete a table, put a process in order and fill 7 gaps. Every box rests on a learning objective of the topic in the AP Biology course and exam description. Type into the blanks and check them, or print it on A4, Letter or A3 with an answer key.

Unit 8 practice questionsThe whole Unit 8 map

Topic 8.1

Responses to the Environment

AP Biology ยท Unit 8 EcologyName

8.1.AResponses and what triggers them

ResponseTriggerAdvantage
direction of lightleaves are held to catch more light
length of the nightflowering at a season that suits pollinators
Migrationday length, temperature, foodmoves to where conditions are better
Hibernationcold and short dayssaves energy when food is scarce
Alarm callsight of a predatorwarns relatives and the group

8.1.A, 8.1.BBehavior and signals

Organisms detect stimuli and respond in ways that improve their survival. Some behavior is , so it does not need experience, and some is learned. Signals pass between organisms too: pheromones carry messages in the air, and animals use sound and display to warn, to attract mates and to coordinate a group. Living in a group lets animals share the work of watching for danger, as in a flock, herd or school, and some animals give up their own chances for their relatives' sake, which spreads shared alleles.

Topic 8.1Responses to the Environment

8.1.A, 8.1.BA shoot bends towards light

1234
  1. 1
  2. 2
  3. 3
  4. 4

8.1.APhototropism

Number the steps in order.

  1. Auxin moves to the shaded side of the shoot.
  2. The shoot bends towards the light.
  3. Cells on the shaded side elongate more than cells on the lit side.
  4. Light shines on the shoot from one side.
Word bank auxinelongating cellsinnatelight sourcePhotoperiodismPhototropismshoot tip

Answer key

Every box on the sheet with its gaps filled in, as the subtopic reads in full.

  1. LabelA shoot bends towards light

    1. light source
    2. auxin
    3. shoot tip
    4. elongating cells

  2. OrderPhototropism

    1. Light shines on the shoot from one side.
    2. Auxin moves to the shaded side of the shoot.
    3. Cells on the shaded side elongate more than cells on the lit side.
    4. The shoot bends towards the light.

  3. TableResponses and what triggers them

    ResponseTriggerAdvantage
    Phototropismdirection of lightleaves are held to catch more light
    Photoperiodismlength of the nightflowering at a season that suits pollinators
    Migrationday length, temperature, foodmoves to where conditions are better
    Hibernationcold and short dayssaves energy when food is scarce
    Alarm callsight of a predatorwarns relatives and the group

  4. GapsBehavior and signals

    Organisms detect stimuli and respond in ways that improve their survival. Some behavior is innate, so it does not need experience, and some is learned. Signals pass between organisms too: pheromones carry messages in the air, and animals use sound and display to warn, to attract mates and to coordinate a group. Living in a group lets animals share the work of watching for danger, as in a flock, herd or school, and some animals give up their own chances for their relatives' sake, which spreads shared alleles.