BIOA02H3 Lecture Notes - Lecture 6: Niche Differentiation, Commensalism, Interspecific Competition

40 views3 pages

rubykangaroo678

15 Apr 2018

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

hans15149 and 39222 others unlocked

BIOA02H3 Full Course Notes

Verified Note

43 documents

Document Summary

Describe and explain the significance of all red terms: a community is where interacting populations of different species are found in the same place and time. Interrelationships (where two or more things is related to the other) govern the flow of energy and nutrient cycling within community. A species" niche includes all of its interactions with the biotic (living factors) and abiotic factors of its environment. Abiotic factors are the conditions (which are infinite such as sunlight) and resources (which are finite such as food). Defined by all the needs and tolerances of an organism. It relates observed presences of a species to values of environmental variables at those sites. A niche is a combination of the physical habitat of a species and its ecological role in that habitat which is determined by both abiotic and biotic factors that affect the species.

Related Questions

16. Which of the following statements best describes a commensal symbiotic relationship between two species? Both species benefit. One species benefits and the other is unaffected. One species benefits and the other is harmed. Both species are harmed.

17. The fundamental niche of an organism is determined by ______ factors, while the realized niche is determined by ______ factors. biotic; abiotic abiotic; biotic biotic; biotic abiotic; abiotic

18. Competition between species can be reduced as a result of character displacement. This is because one of the species becomes extinct. the species will no longer compete for the same resource. the niche of at least one of the species is changed. Both B and C are correct.

19. When they winter in Central and South America, robins form flocks and feed on fruit. During the summer, they migrate to North America, where they feed on caterpillars, earthworms and other animals. These birds are best described as herbivores. omnivores. detrivores. carnivores.

20. For your final examination before you receive your degree from Penn State, you have been given a slide that contains an unknown tissue from a multi-cellular eukaryote. You have been asked to identify if that tissue is from an animal, a fungus, or a plant. As you stare through the microscope at the slide, you remember that you learned the major differences between these cells in Biology 11. You look for the presence of ______, found only in plant cells, and the absence of ______, never seen in animal cells. But, the cells that you are looking at have a cell wall and do not have chloroplasts. You confidently circle ______ on the answer sheet. chloroplasts; mitochondria; animal mitochondria; chloroplasts; animal chloroplasts; cell walls; fungus mitochondria; cell walls; fungus

Question 1

Which is a population?

		All the members of a species inhabiting a given location.
		All the interacting populations in a given area.
		The living community and the physical environment functioning together as an independant and relatively stable system.
		All of the above

5 points

Question 2

Which is not an abiotic factor?

		Intensity of light
		type of substratum
		range of temperatures
		living things

5 points

Question 3

What does the fertility rate have to be in order to keep a population stable (neither increasing or decreasing)?

		1
		2
		3
		4

5 points

Question 4

Japan's population is falling due to a low fertility rate.

True

False

5 points

Question 5

When the population remains relatively constant over a number of years this is known as

		steady state
		abiotic state
		biotic state
		Both abiotic and biotic states

5 points

Question 6

Which are the living components of the environment?

		biotic factors
		abiotic factors
		neutrality factors
		non-organic factors

5 points

Question 7

What is carrying capacity?

		The maximum number of organisms the resources of an area can support.
		The amount of abiotic factors in an area.
		The amount of energy.
		The density of a star.

5 points

Question 8

Which can synthesize their own food?

		heterotroph
		herbivore
		autotroph
		carnivore

5 points

Question 9

Which is an example of a saprophyte?

		vulture
		bacteria
		mouse
		frog

5 points

Question 10

This consumes both plants and animals.

		Carnivore
		Herbivore
		Omnivore
		Tachivore

5 points

Question 11

Global warming might actually cause global freezing.

True

False

5 points

Question 12

There are good odds that a future virus can cause the extinction of the human race.

True

False

5 points

Question 13

A heterotroph can make its own food.

True

False

5 points

Question 14

According to the 1st Law of Thermodynamics, disorder always increases.

True

False

5 points

Question 15

In 5 billion years the Sun will expand and burn up the Earth.

True

False

5 points

Question 16

Einstein stated that World War 4 will be fought with sticks and stones.

True

False

5 points

Question 17

Which is not true of the First Law of Thermodynamics?

		Energy cannot be created
		Energy cannot be destroyed.
		Energy can change forms.
		All are true.

5 points

Question 18

According to the Second Law of Thermodynamics, the heat death of the universe is its ultimate fate.

True

False

5 points

Question 19

Which is organic?

		CH₄
		CO₂
		H₂O
		N₂

5 points

Question 20

The Sun and the core are the primary energy sources for the Earth.

True

False

limejackal967

Question 13

Species that are purposely or accidentally introduced to a new geographical region

Answers:	frequently form hybrids with native species
	die out quickly
	can become serious pests by killing the native species
	experience increased mutation rates that help them adapt to the new ecosystem

______________

Match the following terms with correct definition.

Question
biome
population
ecosystem
community

All Answer Choices
A. all of the individuals of a species in a specific area
B. comprises all of the biotic and abiotic factors in a particular area
C. interacting species occupying a given habitat
D. large scale interactions of species defined on land by the type primary type of vegetation

_______________

Question 24

Which of the following is an example of a species distributed in a random distribution?

Answers:

oak trees that drop their seeds to the ground

a herd of elephants traveling to the watering hole

dandelion seeds that are blowing in the wind

nesting penguins

________________

Question 33

________

Which of the following is a threat to biodiversity?

Answers:

habitat loss

overharvesting

climate change

all of the above

_____________

Some theories around why more diversity in species or areas known as [a___________] are found near the [b_______] are: more energy or greater [c_____] of the ecosystems, giving the opportunity for more [d________].

Answers:

age

speciation

equator

size

hotspots

evolution

BIOA02H3 Lecture Notes - Lecture 6: Niche Differentiation, Commensalism, Interspecific Competition

BIOA02H3 Full Course Notes

Document Summary

Get access

Related Documents

BIOA02H3 Lecture Notes - Lecture 6: Lichen, Coevolution, Semibalanus Balanoides

BIOA02H3 Lecture Notes - Lecture 6: Ecological Niche, Interspecific Competition, Lichen

BIOA02H3 Lecture Notes - Lecture 6: Semibalanus Balanoides, Ecological Niche, Intertidal Zone

Related Questions