September 28 Flashcards Preview

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Flashcards in September 28 Deck (29):
1

What six factors do plants require to survive?

Light
Heat
Air
Nutrients
Mechanical support
Water

2

What is liebigs law of the minimum?

All organisms have minimum requirements to live, limiting factors.

3

What is shelfords law of tolerance?

All species live within certain environmental limitations with respect to growth factors. These limitations are a tolerance range or maximum.

4

True or false
More species exist at the poles than the equators.

False

5

Why do more species exist at the equator compared to the poles?

The conditions are less extreme at the equator so there are less limitations on things like available light, water, nutrient rich soil

6

What is a niche?

A combination of physical, chemical and biological factors necessary for life.

7

What is competitive exclusion?

No two species can have the exact same niche.

8

What is a habitat?

Where an organism lives

9

Why is a specialized species more likely to be endangered than a generalized species?

Because it is less adaptable to changing environments. So if something gets altered by humans the plant can't move to a different location

10

The composition of a community refers to the ....

Amount of species in a community

11

Communities can have different structural layers meaning?

Layers from the ground, the more layers mean higher growth in a forest, more mature

12

What are some limiting factors of the Arctic tundra?

Water and temperature

13

What is a limiting factor of the temperate rain forest?

Light and nutrients

14

The temperate rain forest has the ______ biomass of large trees and biodiversity

Largest

15

What are some adaptations of trees that allow them to compete for more sunlight?

Larger leaves

16

What is an epiphyte?

A plant that has the ability to grow up different objects to get higher to receive more sunlight

17

What is a detritus food chain?

Decomposes

18

A saprotroph is not photosynthetic but lives off the _______ food chain

Detritus

19

What is a Lobaria?

A form of lichen photosynthetic algae and a nitrogen fixing fungi (BNF) involved

20

True or false
Lots of evapotranspiration occurs in the temperate rain forests.

True

21

What is Evapotranspiration?

It is the combination of transpiration from trees and evaporation bringing water into the air

22

What is a hermaphrodite?

A species with both female and male parts

23

Tropical rain forests represent __% of the earths forests.

6

24

Tropical rainforests have the ________ diversities

Greatest

25

Tropical rainforests have an excess of ....

Heat energy and water

26

What are the limiting factors of the tropical rain forest?

Light and nutrients

27

True or false
Lots of plants in the tropical rainforest grow on other plants.

True, these are epiphytes

28

What are buttress roots?

A shallow root system

29

What is a biome?

The largest category to describe different life forms