Biology test for all you!?

Question

1.The zone of light penetration in aquatic ecosstems is____.
a.unlimited
b.the aphotic zone
c.the photic zone
d.unpopulated by autotrophs

2.A primary abiotic limiting factor of the tundra biome is____.
a.temperature
b.lack of plant life
c.too much water
d.altitude

3.The orderly changes that take place in communities are____.
a.called succesion
b.a climax
c.a range of tolerance
d.limiting factors

4.A species that first occupies and lives in an area is a____.
a.limiting species
b.pioneer species
c.consumer
d.predator

5.The zone in which most organisms of a population congregate is the____.
a.aphotic zone
b.photic zone
c.optimum range
d.zone of intolerance

6.The major difference between climates of grassland and forest is that grasslands are____.
a.cooler
b.water
c.drier
d.brighter

7.Stable community populations results in a(n)____.
a.country
b.desert
c.climax community
d.ecosystem

8.Coastal bodies of water,partially surrounded by land, in which fresh water and salt water mix are

____.
a.estuaries
b.marine
c.planktonic
d.usually deep

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Answer 1

1. c
2. a
3. a
4. b
5. c
6. c
7. c
8. a

Answer 2

1. C. the photic zone
2. A. temperature
3. A. called succesion
4. B. pioneer species
5. C. optimum range
6. A. cooler
7. C. climax community
8. A. estuaries