Worksheetsgrade 4 , concept 1
Total questions: 20
Worksheet time: 10mins
Fennec fox and caracal have............ that help them blend in with desert landscapes.
colorful scales
thick white fur
sandy-colored feathers
sandy-colored fur
Desert lizards have desert. that make them hide among the colorful rocks in the
tan-colored fur
colored scales
sandy colored feathers
dark fur
Camouflage means that the animal
can be seen easily among its surrounding environment.
is hard to be seen among its surrounding environment.
is easily to be seen by its preys.
can be seen easily by its predators.
Which of the following birds is more difficult to be seen by its predator?.
A red bird on a green tree.
A blue bird on a green tree.
A yellow bird on a green tree.
A green bird on a green tree.
Bull sharks can live in
fresh water only.
salt water only.
seas, rivers and mud.
rivers, seas and oceans.
One of structural adaptations of bull sharks is that they
can live in both salt water and fresh water.
are flexible about what they eat.
hunt in the day as well as the night.
can live in salt water only.
When a panther chameleon stands within leaves of trees, the color of its scales changes into color.
white
green
blue
black
Special eyes of the panther chameleon belong to adaptation.
only structural
only behavioral
both structural and behavioral
neither structural nor behavioral
is considered as a behavioral adaptation in the panther chameleon.
Puffing up its body during danger
Each eye can move independently
V-shaped feet
Tail like a hand
All the following are structural adaptations in the panther chameleon, except
each eye can move independently.
openning its mouth wide during danger.
its V-shaped feet.
its tail like a hand.
Palm tree has tiny leaves like
pine tree.
kapok tree.
acacia tree.
water lily plant.
One of the structural adaptations of water lily plant is that
it has long roots.
it has sharp spines.
it has tiny leaves.
it has wide leaves.
Mangrove tree has long and strong roots to
resist the strong wind.
resist the water waves.
prevent the loss of water.
absorb the underground water.
Pine tree has a triangular shape to make snow slides over its branches without breaking it. This structural adaptation makes this tree face the extreme cold climate like the feet of
caracal.
penguin.
fennec fox.
brown bear.
Barbary fig keeps animals away like acacia trees by its
sharp spines.
poison.
smell.
long leaves.
Pollution of an ecosystem can affect
plants and animals only.
animals and humans only.
humans and plants only.
plants, animals and humans.
If the environment is slowly changed, plants to survive and grow.
must have a taproot
must have buttress roots
must decrease their adaptation
must land their seeds in another better place
From the negative effects of human activities on the human health are
lung damage and asthma.
asthma and wounds.
heart problems and wounds.
lung damage and wounds.
Human can help restoring ecosystem by all of the following activities, except
replanting the cleared forests.
removing air and water pollutants.
producing more factories exhausts.
preserving existed plants and animals.
Blood vessels that carry oxygen gas in amphibians, present in
skin and digestive system.
lungs and eyes.
digestive system and eyes.
skin and lungs.
