What contains the green pigment chlorophyll?
Options:
- (A) seeds
- (B) orchids
- (C) barnacles
- (D) cacti
- (E) plastids
- (F) ferns
- (G) Most plants
- (H) bioaerosols
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Let's think first: Chloroplasts contain the green pigment chlorophyll. Chloroplasts are the most familiar plastids. Plastids contain the green pigment chlorophyll.... So the answer is [(E)]

Millipedes lack what?
Options:
- (A) epidermal
- (B) segmented body
- (C) leg pairs
- (D) a cuticle
- (E) a vertebral column
- (F) diplosomites
- (G) Chlorophyll
- (H) biological diversity
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Let's think first: Invertebrates are animals that lack a vertebral column, or backbone. Millipedes, spiders and other invertebrates are probably taken as well. Millipedes lack a vertebral column.... So the answer is [(E)]

After an infection or injury to the lung, what can happen?
Options:
- (A) Destroy crops
- (B) a lot of human deaths
- (C) Plant growth is reduced
- (D) destroying life
- (E) forest is destroyed
- (F) opportunistic infections
- (G) death and devastation
- (H) negative impact
--
Let's think first: Pneumonia may be caused by an infection or injury of the lungs. Opportunistic infections, such as Pneumocystis carinii pneumonia, begin to occur. Opportunistic infections may be a result of an infection or injury of the lungs.... So the answer is [(F)]

What has a nervous system?
Options:
- (A) Nerve tonic
- (B) Jellyfish
- (C) Air
- (D) fur seals
- (E) Cardiovascular system
- (F) animals
- (G) chickens
- (H) elephants
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Let's think first: Most invertebrates have a nervous system. Jellyfish and insects are invertebrates. Jellyfish have a nervous system.... So the answer is [(B)]

What does immunization cause?
Options:
- (A) amino acids
- (B) sweating
- (C) immunoglobulin deficiency
- (D) nutrition
- (E) resistance
- (F) recovery
- (G) fever
- (H) immunity
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Let's think first: Immunity results from immunization. An effect is the result or outcome of some cause. Immunization causes immunity.... So the answer is [(H)]

What animal can regrow middle segments when broken?
Options:
- (A) amoeba
- (B) geckos
- (C) humans
- (D) insects
- (E) Wasps
- (F) worms
- (G) toads
- (H) snakes
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Let's think first: Annelids have the amazing capacity to regrow segments that break off. Annelids include earthworms and leeches. Earthworms have the ability to regrow segments that break off.... So the answer is [(F)]