TOPICS: The living world

Question 1

Why are rainforest soils surprisingly infertile

Answer 1

because heavy rainfall dissolves and carries away nutrients

Question 2

What is the name for the highest level of the rainforest

Answer 2

emergents

Question 3

What is the name for the second highest layer in the rainforest

Answer 3

canopy

Question 4

what is the name for the third highest layer in the rainforest

Answer 4

understory

Question 5

what is the name for the bottom layer of a rainforest

Answer 5

forest floor

Question 6

what is an ecosystem cascade

Answer 6

a diagram showing the effect of a change in a food chain

Question 7

What are the 6 ecosystems

Answer 7

tundra
rainforest
desert
cold environment
grassland
temperate deciduous forest

Question 8

Features of tundra

Answer 8

very cold, with low rain and not much life, only moss and grass

Question 9

Features of grassland

Answer 9

very few trees, with a wet and dry season

Question 10

Features of temperate deciduous forests

Answer 10

four clear seasons, with rain throughout the year

Question 11

Features of tropical rainforest

Answer 11

hot and very humid, with lots of rainfall. Very dense with lifeforms

Question 12

Features of hot desert

Answer 12

Almost no rainfall, very very hot int eh day and very cold at night. Only cacti and other similar plants can survive

Question 13

Features of cold environments

Answer 13

freezing temperatures all year round.

Question 14

What are examples of producers in a freshwater pond

Answer 14

Algae or pond weed

Question 14

What are examples of consumers in a freshwater pond

Answer 14

Trout or similar fish

Question 15

Examples of decomposers in freshwater ponds

Answer 15

maggots

Question 16

temperature range of rainforests

Answer 16

21 to 30 degrees all year

Question 17

How many mm a year of rainfall in the amazon

Answer 17

2,000

Question 18

are most plants evergreen or not in rainforests

Answer 18

evergreen

Question 19

What are Epiphytes

Answer 19

Plants which grow on other plants, (common in tropical rainforests)

Question 20

What are buttress roots

Answer 20

Roots which are adapted so they spread a wide area and go deep underground.

Question 21

Why do buttress roots exist

Answer 21

They can absorb much more nutrients, and also give the tall trees more stability

Question 22

What is pointed leap tips

Answer 22

makes the water run off the leaf easily, so the leaf is not damaged by the heavy rainfall

Question 23

Why do trees in tropical rainforests have smooth and thin bark

Answer 23

To let the water run easily off the tree, so it doesn’t absorb too much

Question 24

How have chameleons evolved to suit the tropical rainforest

Answer 24

Their skin can change colour so as to blend in, to not be seen by predators

Question 25

How have jaguars evolved to suit the tropical rainforest

Answer 25

Their skin is camouflaged, so they can effectively sneak up on prey

Question 26

What percent of the earth is covered in rainforest

Answer 26

6 percent

Question 27

What are some environmental impacts of deforestation

Answer 27

less photosynthesis, so more CO2 in the atmosphere
Fewer trees, means the soil is less tightly bound, so soil erosion is more likely
Burning of trees releases lots of CO2

Question 28

What are 3 reasons for deforestation

Answer 28

logging and timber
mineral extraction
farming and agriculture

Question 29

how many drugs have been made from the amazon

Answer 29

7,000

Question 30

What is selective logging

Answer 30

only cutting down certain species of trees, or trees at a certain age

Question 31

average daytime and nighttime temp in sahara

Answer 31

45, -4

Question 32

Why do desert plants have spines instead of leaves

Answer 32

To give the plant the minimum possible surface area, to stop water loss via transpiration

Question 33

Why do jackrabbits have huge ears

Answer 33

large surface area to volume, so they can lose heat easily

Question 34

Why are desert animals nocturnal

Answer 34

To escape the heat of the day

Question 35

2 animal adaptations of tropical rainforests

Answer 35

spider monkey has long, strong limbs to help it climb through the canopy
Jaguars have spotted skin to hide from predators

Question 36

2 plant adaptations of tropical rainforests

Answer 36

Drip tip leaves, to stop water buildup from snapping the leaf
buttress roots, to support the very tall trees, and also outcompete other roots for nutrients

Question 37

What are 3 values of the tropical rainforest (things it can provide us)

Answer 37

Timber, Medicines, and energy (from dams)

Question 38

What are 3 causes of deforestation

Answer 38

Logging
Mineral exportation and extraction
Farming (63 percent of deforestation is due to cattle ranching)

Question 39

3 Impacts of deforestation

Answer 39

less CO2 is absorbed from the atmosphere, so global warming increases
Soil erosion will increase drastically
The extinction and endangerment of many animals

Question 40

What is one international, one national, and one local way of managing rainforests sustaniably

Answer 40

International - debt reduction in return for reduced deforestation
National - protecting areas of rainforest by making them into national parks
Local - selective logging, only deforesting mature trees