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Science 20 Questions

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

True Or False

The outer planets are small,rocky planets with iron cores

a)

True

b)

False

2.

True or False

Photosynthesis stores energy?

a)

True

b)

False

3.

True or false

Fruits that are picked green will never ripen

a)

True

b)

False

4.

MIstakes can happen during replication of genes.

a)

CLIMATE

b)

DNA

c)

75%

5.

____ humidity is a measure of the amount of water vapor that air is holding compared to the amount needed for saturation at a specific tempature

a)

Total

b)

partial

c)

relative

d)

none of above

6.

photosythesis is the process in which plants use energy from light to produce______-

a)

new cells

b)

food

c)

organelles

d)

none of above

7.

Which of the following is not a chromosome?

a)

protiens

b)

cell

c)

acid

d)

dna

8.

the tempature at which air is saturated and condensation forms in the ____________-

a)

dew point

b)

rain point

c)

wind point

d)

relative humidity

9.

the venus flytrap will close its trap when touched.what is the repsonse called

a)

Gravitropism

b)

envirnmentaltropism

c)

phototropism

d)

thigmotropism

10.

To Keep track of hig and low pressure areaś, weather maps are drawn wit lines connecting points of equal atmospheric pressure.these lines are called?

a)

isotherns

b)

equibars

c)

fronts

d)

isobars

11.

protiens are made with the help of

a)

DNA

b)

RNA

c)

PNA

d)

MNA

12.

the most powerful severe storm is the

a)

thunderstorm

b)

tornado

c)

hurricane

d)

front

13.

which of following is NOT an external cause of mutation

a)

exposure to X-rays

b)

exposures to ultraviolent light

c)

exposure to neon light

d)

exposure to radioactive materials

14.

in corss between two pea plants, the offspring are

a)

50 smooth 50 wrinkled

b)

100 smooth

c)

75 wrinkled 25 smooth

d)

75 smooth 25 wrinkled

15.

how does the atmosphere protect life on earth?

a)

maintain tempature

b)

absorb radiation

c)

burns up meteriod

d)

all of above

16.

as much as 90 percent of the oxygen in our atmosphere is th result of

a)

photoperiodism

b)

respiration

c)

thigmotropism

d)

photosynthesis

17.

plants require short nights to fower are called____plants

a)

long day

b)

short day

c)

day neutral

d)

periodic

18.

a recessive trait is observed when _recessive genetic factor are present in offspring

a)

0

b)

1

c)

2

d)

3

19.

cellur respiration takes place in the cells of most organisms

a)

true

b)

false

20.

C6H12O6 and 602 are the start if phtotsynthesis

a)

true

b)

false