Animal orientation responses Flashcards
1
Q
Taxes
A
Movement of an animal towards or away an environmental stimulus
2
Q
Kinesis
A
Non directional response to a stimulus in animals
3
Q
Adaptive advantages for kinesis
A
- Avoiding unfavourable conditions
- Spending more time in favourable conditions
4
Q
Homing
A
- The ability of an individual to return home through unfamiliar territory
- Involves navigation
5
Q
Advantages of homing
A
- Young that need to be fed
- Shelter
- Protection
- A familiar site
6
Q
Migration
A
Seasonal movement of a population of animals between habitats
7
Q
Adaptive advantages of migration
A
- Access to ideal breeding areas
- Avoid adverse weather
- Avoid predators
- Access to food
- May have access to large potential number of mates
8
Q
Disadvantages of migration
A
- May get lost of killed on journey
- Use energy stores
- May get predated
- Takes time
9
Q
7 factors of migration (IPALIGI)
A
- Involves a return journey
- Purpose
- Active
- Long distances
- Involves populations
- Genetically controlled - instinctive
- Initiated by environmental factors
10
Q
Triggers for migration
A
- Temperature
- Daylength
- Innate drive
- Desire to reproduce
11
Q
Visual navigation
A
- using landmarks to navigate
- objects that point them in right direction
12
Q
Solar navigation
A
Sun moves from east to west so gives animals sense of direction
- Have to have an internal clock to compensate for movement of sun
13
Q
Star navigation
A
Birds orienting to brightest northern stars
14
Q
Chemical navigation
A
Familiar scents and chemical trails that organisms follow
15
Q
Adaptive advantages for taxis
A
- Moving away from unfavourable conditions ie. heat, light
- Moving towards favourable conditions ie. food, mates
