wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

8th Science Unit 1 Reivew

Total questions: 24

Worksheet time: 15mins

Name
Class
Date
1.

What type of asexual reproduction is taking place?

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Regeneration

e)

Vegetative Reproduction

2.

What type of asexual reproduction is taking place?

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Regeneration

e)

Vegetative Reproduction

3.

What are some advantages of asexual reproduction are: (select all that apply - there are 3)

a)

it only requires one organism

b)

it takes less energy than sexual reproduction

c)

offspring are already well-adapted for the environment

d)

there is a lot of genetic variety

4.

Some advantages of sexual reproduction include: (select all that apply - there are 3)

a)

genetic variation

b)

improves chances of adapting to the environment

c)

helps species survive catastrophes

d)

it doesn't take as much energy as asexual reproduction

5.

Genetically identical offspring are _____________ the parent organism.

a)

opposite of

b)

clones of

c)

superior to

d)

inferior to

6.

How many parents are required for sexual reproduction?

a)

0

b)

1

c)

2

d)

3

7.

The transfer of pollen, containing the sperm cells, to the female part of the flower.

a)

seed disperal

b)

pollination

c)

germination

d)

fertilization

8.

Brightly colored parts of flowers that attract insects.

a)

petals

b)

pistils

c)

stamen

d)

filaments

9.

After fertilization what does the ovary develop into?

a)

Fruit

b)

Bud

c)

Seed

d)

Flower

10.
Fertilization is the process by which an 
a)
egg and pollen combine
b)
embryo grows into a plant
c)
animal carries pollen between plants
11.

The yellow, powdery stuff on the anthers

a)

Pollen

b)

Dust

c)

dirt

d)

Germs

12.

What is letter B?

a)

Anther

b)

Ovule

c)

Ovary

d)

Sepal

13.
Why do peppered moths tend to be the same color as the trees on which they live?
a)
The coloring goes along with tasting like the tree. 
b)
It keeps the moth the same temperature as the tree. 
c)
It makes the moths faster than the birds
d)
It makes the moths harder to see.
14.
Which of these is an example of natural selection?
a)
The largest animal in a population will have more opportunities for reproduction.
b)
Several species of organisms work together so that they all succeed.
c)
One species takes all the resources in an environment leaving none for others.
d)
Organism that are best suited to an environment tend to survive and reproduce more often.
15.
Which of the following explains adaptation.
a)
An individual organism changes to meet its needs in the environment. These changes pass down to their offspring.
b)
The species as a whole changes their characteristics.
c)
Beneficial traits allow organism to survive and pass on those traits
d)
New characteristics arise in a species as needed.  If these traits are helpful, they are passed down.
16.
The clear wing moth and the wasp look similar to each other. Why? 
a)
The wasp mimics the moth to attract prey.
b)
The moth and the wasp are closely related
c)
The moth mimics the wasp to repel predators
d)
The moth had one wasp parent
17.
When an environment changes faster that an species can adapt, the most likely outcome is...
a)
...biological evolution.
b)
...voluntary mutation
c)
...species extinction
d)
...selective breeding
18.
Evolution works by 
a)
individuals changing to suit their environment
b)
Individuals learned new traits and pass them on
c)
sudden change in the environment cause a species change 
d)
small changes pass down through many generations
19.

This is the practice of inserting the DNA of another species into an organism's DNA so that the organism gains a new trait.

a)

Cloning

b)

Gel Electrophoresis

c)

Genetic Engineering

d)

DNA Fingerprinting

20.

This is the practice of producing a genetically identical cell or organism

a)

Cloning

b)

Gel Electrophoresis

c)

Genetic Engineering

d)

DNA Fingerprinting

21.

This is the practice of choosing individuals of a species to mate based on their desirable characteristics

a)

Bacterial recombination

b)

Natural selection

c)

Genetic modification

d)

Selective breeding

22.
Which of these is not a way in which biotechnology can benefit agriculture?
a)
increase crop population
b)
reducing the loss of crops to insects
c)
producing better-tasting fruits
d)
improving farm machinery
23.

Which parenting behavior does NOT increase the probability that offspring will survive?

a)

producing milk to feed offspring

b)

protecting the offspring from predators

c)

keeping the offspring warm in cold environments

d)

abandoning young before the eggs are hatched

24.

Which of these is a courting behavior that can increase a male's probability of reproductive success?

a)

a male spider performing a little dance in front of the female

b)

a male bird showing off its feathers to a female bird

c)

a male beetle winning the ideal territory for the female beetle

d)

All of these are true

Similar Resources on Wayground

Word of the Days quiz

20 questions

Word of the Days quiz

quiz

Worksheet

•

8th Grade

Ionic Bonds VS. Covalent Bonds

19 questions

Ionic Bonds VS. Covalent Bonds

quiz

Worksheet

•

8th Grade

Unit 2 Lesson 3 (7th Science)

23 questions

Unit 2 Lesson 3 (7th Science)

quiz

Worksheet

•

6th - 8th Grade

honors science - final exam

23 questions

honors science - final exam

quiz

Worksheet

•

6th - 8th Grade

Atoms

24 questions

Atoms

quiz

Worksheet

•

5th - 8th Grade

วาเลนไทน์สดใส ลูก พ.น ห่างไกลโควิท 19

20 questions

วาเลนไทน์สดใส ลูก พ.น ห่างไกลโควิท 19

quiz

Worksheet

•

6th - 12th Grade

Penambahan dan penolakan cahaya

20 questions

Penambahan dan penolakan cahaya

quiz

Worksheet

•

3rd - 9th Grade

The Sun Quiz

20 questions

The Sun Quiz

quiz

Worksheet

•

8th Grade