Question 49 of 60 1.667 Points
Aaron is studying a desert ecosystem containing (1) seeds, (2) rat-eating snakes, (3) snake-eating lizards, and (4) seed-eating rats. Arrange these into a food chain ending with a tertiary consumer.
A. 1>4>3>2.
B. 1>4>2>3.
C. 2>1>3>4.
D. 2>3>1>4.
E. 3>2>4>1.
Question 50 of 60 1.667 Points
You are studying an ecosystem in which weasels prey upon mice and you estimate that the biomass of mice is much greater than the biomass of the weasels. How is this best explained?
A. The weasels must heat their bodies.
B. The mice are unusually large.
C. The weasels have a reproductive problem.
D. The weasels are unusually small.
E. The mice are difficult to catch.
Question 51 of 60 1.667 Points
Photosynthesis is a biochemical reaction which converts oxygen and carbohydrates to carbon dioxide and water.
True
False
Question 52 of 60 1.667 Points
ECB refers to:
A. Edible corn byproducts
B. An insect pest that reduces corn yield
C. None of the above
D. A genetically engineered plant that is resistant to insect pests
E. European corn borer
Question 53 of 60 1.667 Points
In cancerous tissue:
A. The number of cells at rest is greater than the number of cells dividing.
B. The number of cells dividing are equal to the number of cells at rest.
C. The number of cells at rest is less than the number of cells dividing.
D. The number of cells dividing are less than the number of cells at rest.
Question 54 of 60 1.667 Points
Cells found in the resting stage of the cell cycle are said to be in:
A. metaphase
B. interphase
C. anaphase
D. prophase
E. telophase
Question 55 of 60 1.667 Points
Which type of tissue would have a higher mitotic index?
A. cancerous ovarian tissue
B. both a and b
C. neither a or b, the mitotic index cannot be calculated for ovarian tissue.
D. normal ovarian tissue
Question 56 of 60 1.667 Points
Several plant grow in moist tropical rain forest. Compared to other plants transpiration is likely:
A. The same in all plants
B. Lower
C. Higher
Question 57 of 60 1.667 Points
In your study which plant was most likely taken from a tropical rainforest?
A. The zebra plant
B. The arrowhead
C. The rubber plant
D. The coleus
Question 58 of 60 1.667 Points
For plants to manufacture their own food by the process of photosynthesis they need the following:
A. sunlight, water, chlorophyll and carbon dioxide
B. hot water, hydrogen sulfide gases and Fe and Mg
C. ice, water, oxygen and nitrogen
D. brown sugar, oil, hot sun and butter
Question 59 of 60 1.667 Points
Chemosynthesis is the process by which the organisms manufacture food using hydrogen sulfide, heavy metals and hot water (600 deg C):
True
False
Question 60 of 60 1.667 Points
The ultimate source of energy for most ecosystems is:
A. Sunlight
B. Water
C. Carbon
D. Oxygen
Quick Reply
