Studied by 3 peopleWhich of the options, A to D, describes the role of CITES?
A) making conservation a part of normal farming practices
B) restricting the trade in individuals of endangered species
C) stopping the movement of endangered species
D) requiring countries to develop strategies for sustainable development
B
The following statements describe the benefits of ex situ conservation.
Conditions can be maintained at the optimum.
Many specimens can be conserved in a small space.
The health of individuals can be monitored constantly and treatment provided if necessary.
Which of the following, A to D, identifies the statement(s) that apply to seed banks?
A) 1, 2 and 3
B) only 1 and 2
C) only 2 and 3 D only 1
B
Which of the statements, A to D, best defines the term species evenness?
A) the number of species in an area
B) the relative abundance of each species in an area
C) the relative number of individuals of a species in an area
D) the spread of species over an area
B
"A garden pond is a dynamic environment that is home to a variety of organisms. The temperature of the pond varies depending on the weather and the time of year, and this affects the populations of the species that live there." Which of the following terms applies to the description of the garden pond?
A) a community
B) an ecosystem
C) a habitat
D) a niche
B
Which of the following is an aesthetic reason for maintaining biodiversity in Dawlish Warren?
A) maintaining the 200 different animal species
B) maintaining the area as a tourist destination to support local businesses
C) preventing the disappearance of the coastal landscape
D) protecting the sparrowhawk, which is a keystone species
C
Moving North from a large solitary tree in the school field, some students studied changes in plant species. They laid a tape measure due North from the base of the tree trunk and dropped a quadrat at 1 m intervals for 15 m. Which of the following correctly describes the students’ sampling method?
A) arbitrary
B) random
C) stratified
D) systematic
D
Recently trial reintroduction in Scotland for beavers found they ‘transformed the landscape’.
After 5 years the beavers had:
constructed dams – the largest of which was 18 m long and 1.6 m high
felled trees
created canals
built lodges (large nests)
successfully reproduced
One benefit of the reintroduction of beavers in Scotland was an increase in habitat diversity. Explain how the following activities could have contributed to increased habitat diversity. (Constructed dams, Felled trees, Built lodges)
Constructed dams - reduced flow rate of river for aquatic species
Felled trees - open up tree canopy, allowing sunlight to reach ground level
Built lodges - creates sheltered habitat for insects etc.
Recently trial reintroduction in Scotland for beavers found they ‘transformed the landscape’.
After 5 years the beavers had:
constructed dams – the largest of which was 18 m long and 1.6 m high
felled trees
created canals
built lodges (large nests)
successfully reproduced
Increasing habitat diversity may lead to an increase in species diversity and genetic diversity. Explain why species diversity and genetic diversity may be increased as a result of the beavers' activity.
species diversity: increase because more species live in new habitats created by beavers
genetic diversity: increase because species have wider range of conditions to live in
Recently trial reintroduction in Scotland for beavers found they ‘transformed the landscape’.
After 5 years the beavers had:
constructed dams – the largest of which was 18 m long and 1.6 m high
felled trees
created canals
built lodges (large nests)
successfully reproduced
Suggest two arguments that may be used by local business leaders against the introduction of beavers. State whether these outweigh the arguments presented by the naturalists.
argument one: loss of farmland bc of flooding. not strong argument bc small area affected but depends on how much is flooded.
argumen two: trees cut down because of beavers. not strong argument bc probably only occur near water but damage to river banks need repairs
A study was carried out on butterflies in two different habitats in the north of England. The two habitats were farmland and mixed deciduous woodland.
Surveys were completed in 1992 and then at four year intervals.
Data were collected from butterfly transect sites in both habitats. Using this data, the total butterfly population in each habitat was estimated.
In 2012, the general populations of butterflies in these two habitats reached historical lows as a result of the prolonged cold and wet weather.
Between 1992 and 2012 the woodland had become overgrown due to lack of active management. In particular the number of open spaces in the woodland had decreased.
State one variable that scientists should control when carrying out surveys such as this.
time of year/ day/ between samples recorded
Note
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