Ques:[All of what have a characteristic life cycle that includes alternation of descendants?
Options:
- (A) Conifers
- (B) flowers
- (C) apples
- (D) plants
- (E) amoeba
- (F) Trees
- (G) Oak
- (H) Spruce]
Ans:[All plants have a characteristic life cycle that includes alternation of generations. Descendant includes descendants of all generations. All plants have a characteristic life cycle that includes alternation of descendants.
(D)]

Ques:[_ bind to allergens.
Options:
- (A) to stay warm
- (B) mammals
- (C) fur and fat
- (D) animals
- (E) protect them
- (F) Most plants
- (G) Antibodies
- (H) Chemical energy]
Ans:[Antibodies are large, Y-shaped proteins that recognize and bind to antigens. Allergens are also called Antigens. Antibodies bind to allergens.
(G)]

Ques:[An earthworm is an important
Options:
- (A) allow growth
- (B) cleaner for earth
- (C) Plant reproduction
- (D) more abundant
- (E) parasite
- (F) Something that makes plants green
- (G) predator
- (H) deposit feeder for earth]
Ans:[Earthworms are important deposit feeders that help form and enrich soil. Earth stands for soil, dust or ground. Earthworms are important deposit feeders that help form and enrich earth.
(H)]

Ques:[What has a special excretory structure?
Options:
- (A) Silk plants.
- (B) Insects.
- (C) a fish
- (D) animals
- (E) plants
- (F) Architecture structures.
- (G) barnacles
- (H) Corset structure.]
Ans:
[Some arthropods have special excretory structures. All insects are arthropods. Insects have special excretory structures.
(B)]