WorksheetsEndangered Species
Total questions: 25
Worksheet time: 14mins
¨The type of species that offers the best opportunity to apply the prevention principle is the
indicator species.
endangered species.
keystone species
alien species.
Illegal hunting for profit is called
sport hunting.
poaching.
commercial hunting.
subsistence hunting.
Why do endangered species matter?
Because they are cute
Biodiversity
Because if they die we cannot have them as pets
Because they cannot be in the zoo
Responsible for the determination of endangered species status and monitoring the level of endangerment.
US. Fish and Wild Life Services
Park Rangers
DEA
Coast Guard
What is a habitat?
Where animals live
Where animals go and play
Where vertebrates live
Where invertebrates live
The status of a "threatened species" means:
they are almost extinct
they are likely to become endangered
they are extinct
their numbers are increasing
Migration
survival of the fittest
a behavior that must be taught
movement to a different geographical or climatic region where food is more available
the process of selecting organisms with desired traits to be parents of the next generation
When mangrove trees are removed, it results in a rapid build-up of acid sulfides in the soil and increases shoreline erosion. What is a LIKELY impact of the removal of mangroves from their habitat?
The number of aquatic species would gradually increase.
Inshore breeding areas would be affected, and aquatic species would decline
The sedimentation rate would increase, and new hatcheries would form
The food web in the region would stabilize rapidly.
If an animal, such as duck, has no immediate threat to the survival of its species, it is listed as _____.
least concern
near-threatened
vulnerable
endangered
A vital part of keeping species alive and thriving even if they are threatened or endangered is _____.
over-fishing
habitat destruction
poaching
conservation
The majority of species extinctions are caused by _____.
human practices such as hunting, overfishing, and deforestation
sickness
giant meteors hitting the planet
an imbalance in the ecosystem
A species in which the only living members are in captivity is known as _____.
vulnerable
extinct in the Wild
extinct
endangered
After the population of Florida panthers (Puma concolor) fell to several dozen, scientists developed a plan to save this endangered species. They moved eight panthers from a different subspecies in Texas into the Florida panthers’ habitat so that the two would interbreed. This interbreeding will help the panthers because:
matings between subspecies will produce offspring with recessive phenotypes
a higher rate of homozygosity will ensure that more individuals are able to fight diseases
natural selection can favor panthers that respond positively to changes in the environment
the new population will carry a greater proportion of dominant alleles
ll but one of the factors may cause an animal species to be placed on the endangered list. The factor that does not directly contribute to the endangered status is
habitat loss because of city construction..
introduction of non-native animals to the range of the animal.
introduction of the animal into places that it has previously gone extinct.
pollution from human sources.
Adaptations that enable a species to blend in with its environment are called
mimicry
variations
stems
camouflage
adaptation
a characteristic that an organism can pass on to its offspring through its genes.
an inherited characteristic that increases an organism's chance of survival; a trait that makes a species more suited to its environment
a disease
the process of selecting organisms with desired traits to be parents of the next generation
the place or role that an organism has in its habitat
function
habitat
status
niche
over hunting
When people hunt a species until it cannot recover
native to a certain area
species that enter new ecosystems and multiply, harming native species and their habitats
Release of harmful materials into the environment
Which of these is NOT a status of endangered species?
Critically endangered
Most threatened
Endangered
Vulnerable
Endangered Species Act
the state of being held against one's will; loss of freedom
non domesticated organisms
identifies threatened and endangered species in the US, and puts their protection ahead of economic considerations
species that enter new ecosystems and multiply, harming native species and their habitats
The status of a "threatened species" means:
their numbers are increasing
they are extinct
they are almost extinct
they are likely to become endangered.
all of the actions and reactions of an animal
interact
behavior
instinct
actions
In North America, the spotted owl and the red-cockaded woodpecker are two of the main indicator species. Red-cockaded woodpeckers are very picky when it comes to nesting, as they need bigger and thus older trees to create nests. In terms of the criteria for indicator species, they are easy to monitor and count and they are sensitive to specific environmental changes such as
the health and abundance of old growth forests.
the influence of pollutants on an ecosystem.
the decline of species found in their representative food
chain.
the amount of predation and competition in their range.
