(question). What kind of bodies do earthworms have?
Options:
- (A) non-segmented
- (B) roots
- (C) slimy
- (D) fertile
- (E) bioaerosols
- (F) vertebrate
- (G) more abundant
- (H) segmented
(answer). Annelids are worms such as the familiar earthworm. Annelids have bodies that are segmented. Earthworms have segmented bodies.
The answer is (H)

(question). What has a three chambered heart?
Options:
- (A) alpacas
- (B) goats
- (C) elms
- (D) bats
- (E) orchids
- (F) mammals
- (G) a fish
- (H) toads
(answer). Amphibians have a relatively complex circulatory system with a three-chambered heart. Toads and frogs are both amphibians. Toads have a relatively complex circulatory system with a three chambered heart.
The answer is (H)

(question). What do organisms in the lowest trophic level use as food?
Options:
- (A) Organic compounds
- (B) food and shelter
- (C) heat energy
- (D) Chemical energy
- (E) Chlorophyll
- (F) members of their own species
- (G) scarce resources
- (H) inorganic molecules
(answer). Producers make food from inorganic molecules. Primary producers make up the lowest trophic level. The lowest trophic level makes food from inorganic molecules.
The answer is (H)

(question). 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
(answer).
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.
The answer is (E)