Name: 
 

Gateway Practice 5



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

1. 

Nonvascular plants differ from vascular plants in
a.
How they make food.
b.
Where they obtain water and nutrients.
c.
How they transport water and nutrients.
d.
How they reproduce.
 

2. 

What happens in the phloem?
a.
Water moves up.
b.
Food moves down.
c.
Food moves up.
d.
Water moves down.
 

3. 

All angiosperms
a.
produce cones
b.
produce fruits
c.
are seedless
d.
are tropical
 

4. 

What characteristics do all gymnosperms share?
a.
They live only in hot, dry climates.
b.
They produce naked seeds.
c.
They are trees.
d.
They grow cones.
 

5. 

The reproductive structures of gymnosperms are called
a.
pollen.
b.
ovules.
c.
cones.
d.
sperm cells.
 

6. 

The raw materials of photosynthesis are
a.
sugar and water
b.
sugar and oxygen
c.
carbon dioxide and oxygen
d.
carbon dioxide and water
 

7. 

Directions: Use the diagram to answer the question.
gateway_practice_5_files/i0080000.jpg
The flowers in the drawing above are demonstrating
a.
a negative plant tropism
b.
phototropism
c.
thigmotropism
d.
a gynosperm
 

8. 

How do sponges reproduce sexually?
a.
Sperm from a sponge fertilize eggs in the same sponge.
b.
Water carries sperm from one sponge to eggs in another sponge.
c.
Water carries eggs from one sponge to sperm in another sponge.
d.
Eggs are fertilized by sperm within the sponge's collar cells.
 

9. 

Which of these characteristics is shared by all worms?
a.
They have a digestive system that is a tube.
b.
They are parasites.
c.
They live in soil.
d.
They have sense organs.
 

10. 

Directions: Use the diagram to answer the question.
gateway_practice_5_files/i0110000.jpg
How does an echinoderm use structures A and B?
a.
To defend itself from predators.
b.
To regenerate broken limbs.
c.
To sense when food is near.
d.
To capture food and move.
 

11. 

At some point in its life, each chordate has a flexible supporting rod in its back called a
a.
notochord
b.
gill
c.
nerve cord
d.
backbone
 

12. 

Which of the following fish has a skeleton made of hard bone?
a.
A shark
b.
A ray
c.
A goldfish
d.
A hagfish
 

13. 

Most adult amphibians can obtain oxygen through
a.
gills and lungs
b.
gills and thin, moist skin
c.
lungs and thin, moist skin
d.
lungs only
 

14. 

Directions: Use the chart to answer questions 14 and 15.
gateway_practice_5_files/i0150000.jpg
To which class of chordates does animal C belong?
a.
Birds
b.
Amphibians
c.
Mammals
d.
Reptiles
 

15. 

What characteristic tells you that animal A is a mammal?
a.
It lacks the ability to fly.
b.
It lays eggs.
c.
It has a bill.
d.
It has a diaphragm.
 

16. 

Which characteristic is NOT common to all mammals?
a.
They are ectotherms.
b.
Their hearts have four chambers.
c.
Their skin is covered with hair or fur.
d.
Their young are fed with milk produced in the mother's body.
 

17. 

Directions: Use the diagram to answer questions 17 through 19.
gateway_practice_5_files/i0180000.jpg
Which organisms are the top-level consumers in this food web?
a.
Wheat, carrots, shrubs, and trees.
b.
Mice, rabbits, grasshoppers, and deer
c.
Moles, snakes, and frogs
d.
Hawks and coyotes
 

18. 

Which animal population would probably decrease if all the grasshoppers were killed?
a.
Snake
b.
Frog
c.
Mouse
d.
Coyote
 

19. 

Which food chain would cease to exist if all the flowering shrubs were destroyed?
a.
Deergateway_practice_5_files/i0200000.jpgcoyote
b.
Micegateway_practice_5_files/i0200001.jpgsnakegateway_practice_5_files/i0200002.jpghawk
c.
Grasshoppergateway_practice_5_files/i0200003.jpgfroggateway_practice_5_files/i0200004.jpghawk
d.
None of the above
 

Short Answer
 

20. 

gateway_practice_5_files/i0220000.jpg
 

21. 

gateway_practice_5_files/i0230000.jpg
 

22. 

gateway_practice_5_files/i0240000.jpg
 

23. 

gateway_practice_5_files/i0250000.jpg
 

24. 

You want to find out which brand of plastic cement is the strongest. First you buy two of the most popular brands -- Super Stick and Mighty Stick.
Next you get 4 pieces of plastic. You take 2 of the pieces and put a lot of Super Stick on them and squeeze them together for 5 minutes. Then you take the other two pieces of plastic and put a small dab of Mighty Stick on both pieces and squeeze them together for 3 minutes. In the morning you try to pull the pieces of plastic apart. First you pull on the pieces that were joined together by Super Stick. You cannot pull them apart. Then you pull on the pieces held together by Mighty Stick and they come apart easily.

1. Can you conclude that Super Stick is stronger than Mighty Stick? If yes, why? If no, why?     
2. What variables need to be controlled?     

3. What is the manipulated variable?

4. What is the responding variable?
 

25. 

Amy wanted to find out if the temperature of water affected plant growth. For her experiment she used 24 plants. She divided them into six groups of four plants each. She watered one group with hot water, one with lukewarm water, one with water from the tap, and one with ice water.
List the variables Amy needs to control in her experiment:
 

26. 

Wayne likes to drink hot chocolate. Therefore, he decided to find out what kind of cup would keep chocolate hot for the longest time. He tested cups made of Styrofoam, glass, metal, pottery, and plastic.
List the variables Wayne needs to control in his experiment:           
 

27. 

Lisa arrived at school and went directly to her life science class. Her teacher gave Lisa three small corn plants of equal size and asked Lisa how water might affect their growth. Lisa measured the plants and found them each to be 8 milliliters tall. She marked the pots for the plants 1, 2, and 3. Each morning for 10 days she sprayed plant 1 with a little bit of water, plant 2 with more water, and plant 3 with the most water. She exposed plant 1 to 2 hours of sunlight, plant 2 to 3 hours of sunlight, and plant 3 to 4 hours of sunlight. She memorized all of these facts. At the end of the 10 days, Lisa again measured the plants and found that plant 1 was 5 inches tall, plant 2 was 6 inches tall, and plant 3 was 2 inches tall. Lisa concluded that corn plants grew best when given a moderate amount of water.

1. What was wrong with Lisa's first measurement of the plants?

2. What was wrong with Lisa's water spraying procedure?

3. What should Lisa have done with her data rather than committing it to memory?

4. What was wrong with Lisa's measurements at the end of 10 days?

5. What was wrong with Lisa's conclusion?
 



 
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