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Life Cycles
Test Description: Unit 8
Instructions: Answer all questions to get your test result.
1) Through what structure do plants take in the most water?
A
roots
B
seeds
C
stems
D
leaves
2) What structure do jellyfish use to protect themselves?
A
stinging tentacles
B
special hooks
C
Camouflage
D
poisonous bite
3) American pit vipers are snakes that have shallow, heat-sensing pits located between their nostrils and eyes. These pits help them sense changes in temperature. What is the main function of these pits?
A
To find warm-blooded birds and mammals as prey
B
To know when it is a warm day
C
To help chew food
D
To help the snake hear
4) A student is an excellent swimmer. Which of the following traits would most support the idea that the student's skill is learned?
A
The student swims several times each week.
B
The student has long arms.
C
The student's father is an excellent swimmer.
D
The student has strong muscles.
5) Polar bears live in the Arctic where temperatures can be as low as –10°C. Which of the following structures most helps polar bears survive and reproduce in this cold climate
A
A large size and sharp teeth
B
Sharp teeth and white fur
C
Being a predator and camouflage
D
Thick fur and insulating body fat
6) Which trait comes from a plant's parents, not from its environment?
A
the number of seeds
B
the length of its root system
C
its leaf shape
D
the number of leaves
7) Which of these is not an inherited trait in a cat?
A
scent marking
B
tail wagging
C
meowing
D
trust of humans
8) A learned behavior
A
does not affect survival.
B
can be inhertied
C
only occurs in humans
D
cannot be inherited.
9) If you compare a plant life cycle and an insect life cycle, which stages would be similar?
A
seed and egg
B
larva and flower
C
adult and seedling
D
flower and pupa
10) In an insect that undergoes incomplete metamorphosis, what occurs between the nymph stage and the adult stage?
A
a resting stage
B
the pupal stage
C
molting
D
development of a chrysalis
11) A seed was planted. It grew into a plant. The plant died. What will happen next?
A
It will make a seed.
B
It will decay
C
It will flower.
D
It will grow into a new plant.
12) How is the life cycle of a cat different from the life cycles of frogs, chickens, and goldfish?
A
It has more stages
B
It takes much less time for young to become adults.
C
It includes an adult stage.
D
It does not include hatching from an egg
13) Which part of the plant is used for reproduction, or making new seeds?
A
roots
B
flower
C
leaf
D
stem
*select an answer for all questions
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