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New
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Year 10
AQA

Plant and animal adaptations, issues relating to biodiversity

I can understand that plants and animals are well adapted to the physical conditions in hot deserts and that there are issues related to biodiversity.

icon-background-square
New
New
Year 10
AQA

Plant and animal adaptations, issues relating to biodiversity

I can understand that plants and animals are well adapted to the physical conditions in hot deserts and that there are issues related to biodiversity.

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Lesson details

Key learning points

  1. Hot deserts are home to a variety of plants and animals.
  2. Plants in hot deserts are well adapted to the physical conditions.
  3. Animals in hot deserts are well adapted to the physical conditions.
  4. There are issues related to biodiversity in hot deserts.

Keywords

  • Adaptation - evolutionary changes that improve an organism’s chance of survival in its environment

  • Nocturnal - active at night and resting during the day

  • Biodiversity - the variety of different types of life found in a particular area

  • Ecosystem - a community of living organisms and their interactions with their environment

Common misconception

A camel's hump stores water.

A camel's hump does not hold water at all – it actually stores fat. The camel uses it as nourishment when food is scarce. If a camel uses the fat inside the hump, the hump will become limp and droop, but with food and rest the hump will normalise.


To help you plan your year 10 geography lesson on: Plant and animal adaptations, issues relating to biodiversity, download all teaching resources for free and adapt to suit your pupils' needs...

It is advisable to watch short clips of wildlife programmes about animal and plant adaptations in the hot desert.
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This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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6 Questions

Q1.
What is a hot desert?
Correct answer: A region that is hot and arid, with extremely low rainfall
A region that has high temperatures year-round and heavy seasonal rainfall
A region with consistently warm temperatures, high humidity and dense forests
A hot region near the Equator with frequent rain showers and lush vegetation
Q2.
How much rainfall falls annually in hot desert environments?
Correct answer: 0-249 mm
250-499 mm
500-749 mm
750-999 mm
1000 mm+
Q3.
Why is the soil store in hot deserts bigger than the biomass or litter stores?
Correct answer: There isn’t much water to leach nutrients out of the soil
Correct answer: There aren’t many plants to take nutrients out of the soil store
Correct answer: Decomposition takes a long time in hot deserts
Desert soils are constantly enriched by nearby rivers and streams
Plants constantly take up nutrients from the soil store
Q4.
Match the keywords to their definitions.
Correct Answer:Hot deserts,hot areas experiencing low rainfall, generally below 250 mm per year
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hot areas experiencing low rainfall, generally below 250 mm per year

Correct Answer:Biome,a global land area characterised by its plants, animals and climate
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a global land area characterised by its plants, animals and climate

Correct Answer:Biotic,the living elements of an ecosystem (e.g. plants, animals)
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the living elements of an ecosystem (e.g. plants, animals)

Correct Answer:Abiotic,the non-living elements of an ecosystem (e.g. water, nutrients)
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the non-living elements of an ecosystem (e.g. water, nutrients)

Correct Answer:Interdependence,links between environmental components depending on one another
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links between environmental components depending on one another

Q5.
Where are hot deserts found?
Between the tropic of Cancer (23.5°N) and the tropic of Capricorn (23.5°S)
Along the Equator (0°) only
Correct answer: Between 15° and 30° north and south of the Equator
Mainly in South America
Q6.
Urbanisation is a key factor in the decrease of biodiversity in hot desert environments. What does the term 'urbanisation' mean?
The process of improving rural areas with better infrastructure and services
The movement of people from cities to the countryside for a quieter lifestyle
Correct answer: The growth in the percentage of people living in urban areas rather than rural
The expansion of agricultural land to support population growth

6 Questions

Q1.
Why do some desert plants have thick, waxy skin?
Correct answer: To reduce water loss through transpiration
To increase water absorption from rainfall
To attract pollinators
To release heat during hot days
Q2.
Match each adaptation with its purpose.
Correct Answer:Large ears,Helps release heat
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Helps release heat

Correct Answer:Spines instead of leaves,Reduces water loss, provides protection
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Reduces water loss, provides protection

Correct Answer:Wide feet,Helps reduce energy loss from moving in sand
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Helps reduce energy loss from moving in sand

Correct Answer:Nocturnal behaviour,Avoids daytime heat
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Avoids daytime heat

Q3.
Which of the following is not a reason for low biodiversity in hot deserts?
Limited rainfall
Correct answer: High soil nutrient levels
Extreme temperature fluctuations
Strong desert winds
Q4.
Ephemeral in hot deserts rapidly complete their life cycles during brief wet periods.
Correct Answer: plants
Q5.
Which of the following is a human threat to biodiversity in hot deserts?
Frequent rainfall
Correct answer: Soil erosion due to overgrazing
Low nutrient levels in the soil
High temperature fluctuations
Q6.
Which of the following is a characteristic of xerophytes?
Growing quickly after rainfall and dying when water dries up
Having broad leaves to increase photosynthesis
Correct answer: Storing water in their stems, roots, or leaves
Releasing water during hot days