the first organism to move into habitat.

what is primary succession

the series of changes in an area with no soil or organisms

Which characteristics are correct for K-strategists.

Slow growth, few larger offspring, high parental care.

Define a keystone species:

Animal who serves a crucial role in the way a ecosystem runs

An interacting group of species in a common location

We can use a transect to...

Look at the distribution of an organism in a habitat

What causes Nitrogen Fixation

When bacteria convert nitrogen gas into nitrogen compounds that plants use

The competitive exclusion principle states that ________________________.

no two species can occupy the same niche in the same habitat

What type of population is a higher risk of extinction?

small population, low genetic diversity

What is denitrification?

Bacteria change NO3 to N2 to return to atmosphere

definition of carrying capacity

maximum number of organism that supports an ecosystem

Which two features below represent r-strategists?

Short-lived, Produce many offspring

What is the correct definition for realised niche?

The part of fundamental niche that an organism occupies.

Many young, no parenting, reproduce once, fast maturation

What is a Quadrat used for?

Estimating the population of small, slow animals and plants

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Biology Unit 3 Questions

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12 Biology Quiz Random Questions: QLD QCAA ATAR Biology - Units 3 - External Exam Revision.

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Questions 42

Answers

1
Which classification system would be used to identify this Australian vegetation?
Specht's
Australian National Aquatic Ecosystem (ANAE)
Holdridge Life Zone
European Nature Information System (EUNIS)
2
Exponential or logistic?
neither
Exponential
Logistic
I don't know
3
Pioneer species?
Climax community
the first organism to move into habitat.
ecological succession
Idk
4
what is primary succession
changes that occurs in an area were organisms still exist
the series of changes in an area with no soil or organisms
the series of predictable changes that occur in a community
the first species to accupy an area
5
Which characteristics are correct for K-strategists.
Slow growth, few larger offspring, high parental care.
Rapid growth, many small offspring, little parental care.
Rapid growth, many small offspring, high parental care.
Slow growth, few larger offspring, little parental care.
6
Define a keystone species:
An animal who serves as an emotional support in your life
Another word for endangered
Another word for threatened
Animal who serves a crucial role in the way a ecosystem runs
7
What is a Community?
The ability to fly
An interacting group of species in a common location
A feeling of fellowship with others
An organism that can interbreed and create fertile offspring
8
Species Richness
Different phenotypes in an ecosystem.
Relative abundance of species
Number of species in an area.
Number of individuals in a species
9
Which population growth curve is shown below?
Average Curve
Exponential Curve
S-curve
J-curve
10
Arboreal means
Tree dwelling
Water swimmers
Bush divers
Land living
11
What are the three domains?
bacteria, archaea, and eukarya
bacteria, protists, and fungi
plants, animals, and fungi
mammals, amphibians, and reptiles
12
The picture shows secondary succession
False
True
13
We can use a transect to...
Measure the height of plants
Look at the distribution of an organism in a habitat
Find out which way is north
Measure light intensity
14
Which of the following is a density independent limiting factor?
natural disaster
competition
amount of space
disease
15
What is a abiotic factor?
Air, wood, dead grass
Table, water, sun
Rocks, fish, chicken nuggets
Air, water, sun
16
what is a key characteristic of an autotroph?
they make their own food
they hunt their own food
none of the above
they make their own shelter
17
The end goal of succession is a climax community
true
false
18
What causes Nitrogen Fixation
When bacteria convert nitrogen gas into nitrogen compounds that plants use
temporary bulges of a plants cell
Photosynthesis
19
Environmental factors that determine the realised niche of an organism or species
Habitat
Limiting factors
Temperature
Mates
20
The competitive exclusion principle states that ________________________.
interaction between species shape the ecosystem
species must compete for the resources they need
no two species can occupy the same niche in the same habitat
different species require different biotic factors
21
Exponential or Logistic?
Exponential
Logistic
Neither
I don't know
22
What type of population is a higher risk of extinction?
large population, high genetic diversity
small population, low genetic diversity
large population
small population, high genetic diversity
23
Identify the producers in this food web.
Squid, Krill
Phytoplankton, seaweed.
Fish, seagull.
Blue whale, killer whale.
24
What is transpiration?
the loss of water from leaves
None of the above
how plants get their color
the female reproductive structure of a flower
25
What is denitrification?
Bacteria change N2 to NH4
Plants uptake nitrogen
Bacteria change NO3 to NH4 for animals
Bacteria change NO3 to N2 to return to atmosphere
26
biotic or abiotic factor that resist the growth of a population
competition
limiting factor
interdependent relationship
carrying capacity
27
definition of carrying capacity
maximum number of organism that supports an ecosystem
A single self contained entity that performs basic functions
biotic or abiotic factor that resist the growth of a population
28
Definition: development & change in plant communities over time, leading from bare ground to climax community.
Secondary Succession
Founder Effect
Migration
Primary Succession
29
Which is the correct formula for Population Growth Rate:
r = immigrants - emigrants
r = (b + i) - (d + e)
r = births - deaths
r = births + death
30
Competition between different species:
Interspecific
Intraspecific
31
Symbiosis: a bird eats the bugs that get stirred up in the grass while the cow is eating
Commensalism
Mutualism
Parasitism
Friendship
32
What are the types of Biodiversity?
Ecosystem
Species
All of the above
Genetic
33
Which two features below represent r-strategists?
Large in size
Short-lived
Extensive parental care
Produce many offspring
34
What is the correct definition for realised niche?
The entire niche that an organism could inhabit
The part of fundamental niche that an organism occupies.
Where an organism realises it should live
35
r-Strategists
Few young, intensive parenting, slow maturation,
Many young, no parenting, reproduce once, fast maturation
Predators that compete with each other for resources
Herbivores that live in herds for protection
36
the pioneer species of primary succession are
flowers grasses
birds and bugs
lichens and mosses
animals and trump
37
The picture shows secondary succession
True
False
38
Which measure would you use to estimate population size from secondary and primary data?
Simpson's Diversity Index
Percentage Cover
Lincoln Index
Specht's
39
What does dichotomous mean?
Folded in two
Broken in two
Branching in two
Two equal parts
40
Where humans around for the first extinction?
obviously
maybe
Yes
No
41
What is a Quadrat used for?
Measuring how many square meters you can fit in an area
Measuring the growth of grass
Estimating the population of large, fast animals
Estimating the population of small, slow animals and plants
42
What is the classification of Humans using Binomial Nomenclature?
Homo sapiens
Homo Sapiens
Homo delphinus
Mammalia sapiens

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