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Polar bears live in the Arctic.
Adaptations for Survival
This Biology quiz is called 'Adaptations for Survival' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.
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For an organism to be successful, it needs to be well adapted. Adaptations for survival are the ways in which an organism is suited to life in a particular environment or habitat. These adaptations can be characteristics, behavior or both. Organisms that are perfectly adapted to a particular way of life in a habitat will change little over long periods of time, unless something changes.
1 .
Animals compete with each other for which of the following resources?
A habitat
A territory
An ecosystem
An adaptation
Competition can lead to changes in behavior or characteristics
2 .
Which of the following is a special adaptation for survival in desert plants?
Larger surface area to volume ratio
Reduced leaf surface area
Thorns
Increased number of stomata
This helps them to conserve water. Having a larger surface area to volume ratio or an increased number of stomata would have the opposite effect. Thorns are not an adaptation that is special to desert plants, they occur in a other climate zones and habitats. The most common desert plants studied for the middle school are cacti, which develop spines (adapted leaves) and not thorns (adapted branches)
3 .
Animals can display features similar to those of poisonous animals, to deter predators. What is this known as?
Marquetry
Mimicry
Mockery
Minimalism
Often animals with the markings of poisonous animals will be less likely to be eaten by predators, thus increasing their chances of survival
4 .
Which of the following statements is true of extremophiles?
Extremophiles are tolerant to high temperatures
Extremophiles are intolerant to high pressure
Extremophiles are tolerant to light intensity variations
Extremophiles are intolerant to low salt levels
They are also tolerant to other extremes such as high or low pH
5 .
How does camouflage help an animal to survive?
Helps it to thermoregulate
Ensures that it blends in with the surroundings
Makes sure that the predator or prey cannot see it
Helps to cool it down
It is important for survival that the predator and prey find it hard to see each other
6 .
Microorganisms have to compete with each other for which of the following?
A mate
CO2
Light
Nutrients
Bacteria reproduce rapidly and can adapt to new conditions in a few generations
7 .
In order to survive, plants need: light, space, nutrients, water and what else?
Carbon dioxide
Hydrogen
Soil
Glucose
Carbon dioxide is a resource for which plants don't compete
8 .
Arctic animals have which adaptation to allow survival?
Brown fur in the summer and white fur in the winter for camouflage
Thick layer of fat so they can survive hibernation
Small eyes and ears to keep out the cold
Ability to swim faster than their prey
The layer of fat also helps to insulate their bodies against the extreme cold
9 .
Which one of the following resources is the least likely to be a limiting factor for plants?
Water
Carbon dioxide
Light intensity
Temperature
Growth is controlled by the scarcest resource so if there is light and water but the temperature is low, growth would be limited. The same works for the other two factors but there is always more than enough carbon dioxide in the air for plants as air is a gas and is constantly circulating
10 .
How does a cactus avoid being eaten by animals?
It has spikes which prevent water loss by evaporation
It has a thick fleshy stem which stores water
It has deep roots to absorb as much water as possible
It has spikes which hurt the animal
Cacti avoid being eaten by having sharp spines which deter animals from coming near
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