What produces a diploid zygote?
Options:
- (A) salamanders
- (B) Plant reproduction
- (C) peachleaf willow
- (D) permineralization
- (E) sexual reproduction
- (F) Veins and arteries.
- (G) Chlorophyll
- (H) Most plants
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Let's think first: Fertilization of gametes produces a diploid zygote. Sexual reproduction requires formation of gametes, followed by fertilization. Sexual reproduction produces a diploid zygote.... So the answer is [(E)]

Earthworms have the amazing capacity to regrow segments that:
Options:
- (A) reproduce
- (B) tadpoles
- (C) Loose
- (D) form sand
- (E) are still attached
- (F) allow growth
- (G) break off
- (H) fungal
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Let's think first: Annelids have the amazing capacity to regrow segments that break off. Earthworms Earthworms are in the phylum Annelids. Earthworms have the amazing capacity to regrow segments that break off.... So the answer is [(G)]

Saltwater excretion reduces what?
Options:
- (A) emissions
- (B) dehydration
- (C) light energy
- (D) bacteria
- (E) sweat
- (F) energy usage
- (G) evaporation
- (H) body heat
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Let's think first: Sweating reduces body heat. Sweat is made of salt and water. Saltwater excretion reduces body heat.... So the answer is [(H)]

What kind of animal is classified as having a vertebrae?
Options:
- (A) it keeps an organism warm
- (B) invertebrate
- (C) vertebrate chordate
- (D) gastropod shells
- (E) the body's largest organ
- (F) remains of prehistoric life
- (G) hard boned animals
- (H) roundworm
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Let's think first: Vertebrate chordates have a backbone. Invertebrates have no vertebrae or backbone. Vertebrate chordates have a vertebrae.... So the answer is [(C)]

What is an important deposit feeder that helps form and enrich soil?
Options:
- (A) A reptile
- (B) swamp vegetation
- (C) bacteria
- (D) A male
- (E) shrub beds
- (F) A hermaphrodite
- (G) An amphibian
- (H) peachleaf willow
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Let's think first: Earthworms are important deposit feeders that help form and enrich soil. Life Cycle Earthworms are hermaphrodites. A hermaphrodite is an important deposit feeder that helps form and enrich soil.... So the answer is [(F)]

What describes something that requires activation energy to get started?
Options:
- (A) igniting fuel and oxidiser
- (B) heating liquids
- (C) Fully cooking the oysters
- (D) Riding a bike
- (E) an engine
- (F) burning coal
- (G) chemical equations
- (H) Firecrackers
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Let's think first: All chemical reactions require activation energy to get started. Chemical equations describe chemical reactions. Chemical equations describe something that requires activation energy to get started.... So the answer is [(G)]