ASVAB General Science Practice Test 818582 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.32
Score	0%	66%

Review

What part of the food chain serves only as food for other organisms?

72% Answer Correctly

	primary consumers
	producers
	decomposers
	secondary consumers

Solution

Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis

Which of the following does not filter air as part of the respiratory system?

60% Answer Correctly

	epiglottis
	trachea
	pharynx
	nasal cavity

Solution

After air enters through the nose, it passes through the nasal cavity which filters, moistens, and warms it. Further filtering takes place in the pharynx, which also helps protect against infection, and then in the trachea which is just past the epiglottis which prevents food from entering the airway.

Which is the proper order of Earth's atmospheric layers from the surface up to space?

57% Answer Correctly

	stratosphere, troposphere, mesosphere, thermosphere
	mesosphere, thermosphere, stratosphere, troposphere
	troposphere, stratosphere, mesosphere, thermosphere
	thermosphere, mesosphere, stratosphere, troposphere

Solution

The troposphere is the closest layer to Earth, followed by the stratosphere, mesosphere, and finally the thermosphere which borders space.

In the food chain, bacteria and fungi convert the organic matter in the dead bodies of plants and animals into simple nutrients. Bacteria and fungi are:

86% Answer Correctly

	decomposers
	producers
	scavengers
	primary consumers

Solution

Decomposers (saprotrophs) are organisms such as bacteria and fungi that break down the organic matter in the dead bodies of plants and animals into simple nutrients.

Which of the following is not part of the carbon cycle?

59% Answer Correctly

	precipitation
	photosynthesis
	respiration
	decomposition

Solution

The carbon cycle represents the ciruit of carbon through Earth's ecosystem. Carbon dioxide (CO₂) in the atmosphere is absorbed by plants through photosynthesis. Plants then die and release carbon back into the atmosphere during decomposition or are eaten by animals who breathe (respiration) the carbon into the atmosphere they exhale and produce waste which also releases carbon as it decays.