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WorksheetsBIOLOGY (Methods for measuring population)
Total questions: 13
Worksheet time: 11mins
What is the primary purpose of direct observation in measuring populations?
To mark and recapture individuals
To estimate population density visually
To conduct aerial surveys
To set up pitfall traps
Which method involves placing a line or path through a habitat to count the number of individuals that intersect with the line?
Quadrat sampling
It simplifies ecosystem dynamics
It improves agricultural productivity
It contributes to ecosystem stability and resilience
In quadrat sampling, what is the purpose of placing a defined area (quadrat) in a habitat?
A) To capture elusive species
To conduct aerial surveys
To estimate population density
To mark and recapture individuals.
Which example demonstrates high species diversity?
A monoculture farm with a single crop
A grassland dominated by a few plant species
A forest with a variety of tree, plant, and animal species
A desert with limited vegetation and animal life
What is the fundamental concept behind mark and recapture methods?
Direct observation of individuals
Counting individuals in quadrats
Estimating population density visually
Capturing, marking, releasing, and recapturing individuals
When there is higher biodiversity
more organisms are likely to die because they can't adapt to environmental changes.
there is less diversity.
there is more diversity and higher sustainability of life.
there is more diversity and lower sustainability of life
Which method involves capturing and marking individuals, releasing them back into the population, and then recapturing to estimate population size?
Camera trapping
Transect sampling
Mark and recapture
What is the primary purpose of transect sampling in ecological studies?
Capturing aquatic organisms
Observing vocalizations of species
cEstimating population density along a predetermined path
Setting up pitfall traps
an ecological hotspot is
an area where temperatures reach at least 120 degrees F
an area of very high biodiversity
an area where almost no species can be found
a species that is only found in one part of the world
How is transect sampling conducted?
Placing containers in the ground
Walking along a predetermined line and counting individuals or signs of their presence
Using motion-activated cameras
Burying marked individuals
Which of the following is a common application of remote sensing?
Mark and recapture
Quadrat sampling
Aerial surveys
Pitfall traps
How is the population size estimated in mark and recapture studies?
By direct observation of individuals
Using quadrat sampling
Counting individuals along transect lines
What is the assumption in mark and recapture studies regarding the marked individuals?
They don't change their behavior after marking
They migrate to different habitats
They become more elusive after marking
They avoid recapture intentionally
