What is essential for cellular respiration for all aerobic organisms.
Options:
- (A) electron
- (B) glucose
- (C) Energy
- (D) Energy.
- (E) chemicals
- (F) Plants
- (G) fungi
- (H) bacteria
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Let's think first: Oxygen is essential for cellular respiration for all aerobic organisms. Oxygen, for example, is produced by plants. Plants are essential for cellular respiration for all aerobic organisms.... So the answer is [(F)]

What will be the result of female sperm fusing with an egg to form a diploid zygote?
Options:
- (A) baby girl
- (B) pollen
- (C) seeds
- (D) allow growth
- (E) Leptospirosis
- (F) litter
- (G) Plants growth
- (H) offspring
--
Let's think first: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. If a female sperm fertilizes the egg, the result is a baby girl. A baby girl will be the result of female sperm fusing with an egg to form a diploid zygote.... So the answer is [(A)]

How do many plants respond to days getting shorter in autumn?
Options:
- (A) Change colors
- (B) spread seed
- (C) Exfoliation
- (D) bioaerosols
- (E) grow a layer of fur
- (F) go dormant
- (G) adding heat
- (H) enlarge themselves
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Let's think first: Many plants respond to the days growing shorter in the fall by going dormant. Autumn or Fall is already here. Many plants respond to the days growing shorter in the autumn by going dormant.... So the answer is [(F)]

What shares a location with spiracles?
Options:
- (A) wings
- (B) pistons
- (C) white
- (D) bats
- (E) animals
- (F) insects
- (G) pollen
- (H) ovaries
--
Let's think first: Wings are part of the exoskeleton and attached to the thorax. Spiracles are located on the abdomen and thorax. Wings and spiracles share a location.... So the answer is [(A)]

What do echinoderms lack?
Options:
- (A) Lungs
- (B) Mass
- (C) oxygen
- (D) eardrum
- (E) gills
- (F) ovaries
- (G) Organs
- (H) Bodies
--
Let's think first: Echinoderms lack respiratory and excretory systems. Lung mechanics and gas exchange are topics during study of the respiratory system. Echinoderms have no lungs.... So the answer is [(A)]

Most types of what have motility?
Options:
- (A) gastropod shells
- (B) members of their own species
- (C) single-celled organisms
- (D) Something to move
- (E) remains of prehistoric life
- (F) microbial fuel cells
- (G) microorganisms
- (H) share properties
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Let's think first: Most protists have motility. Protists Protists are single-celled organisms. Most single-celled organisms have motility.... So the answer is [(C)]