Solution idea: Pollen consists of tiny grains that are the male gametes of plants. Haploid plants produce gametes. Pollen comes from haploid plants.
Q: What kind of plants produce pollen?
Options:
- (A) white
- (B) insects
- (C) seeds
- (D) haploid
- (E) bees
- (F) swea
- (G) grass
- (H) Conifers
A: (D)

Solution idea: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. Male gametes are called sperm. Fertilization occurs when a male gamete and an egg fuse together to form a diploid zygote.
Q: What is formed when a male gamete and an egg fuse together?
Options:
- (A) Plant reproduction
- (B) simple zygote
- (C) spread flower seeds
- (D) diploid zygote
- (E) Chemical energy
- (F) peachleaf willow
- (G) duplex zygote
- (H) reproductive zygote
A: (D)

Solution idea: Head hair is especially important in preventing heat loss from the body. Hair is actually composed of a protein called keratin. Keratin is especially important in preventing heat loss from the body.
Q: What is important in preventing heat loss from the body?
Options:
- (A) hydration
- (B) a cuticle
- (C) stay warm
- (D) sweating
- (E) warmth
- (F) skin
- (G) keratin
- (H) Animal fur
A: (G)

Solution idea: Menopause occurs when menstruation stops occurring, usually in middle adulthood. Clearly, middle adulthood is a time change and development. During menopause comes a time of change and development, including when menstruation stops.
Q: What is a major change that happens in menopause?
Options:
- (A) forest is destroyed
- (B) breasts develop
- (C) Plant growth is reduced
- (D) direct damage to the lungs
- (E) pubic bones expand
- (F) menstruation begins
- (G) menstruation stops
- (H) decreases its bodily water
A: (G)