Behaviors Aid Reproduction - Middle School Life Science
- What is migration for breeding?
- Seasonal movement to reach suitable mating or nesting sites. Animals travel to optimal breeding habitats or conditions.
- Which behavior most directly prevents eggs from drying out in many amphibians and fish?
- Choosing moist, protected egg-laying sites. Maintains proper moisture for egg development and hatching.
- What is synchronized spawning, and why does it increase reproductive success?
- Many release eggs and sperm together to boost fertilization. Timing increases chances gametes meet in water.
- What is a courtship display in animals?
- A behavior used to attract a mate and increase mating success. Shows fitness through elaborate visual, auditory, or behavioral signals.
- What is pheromone signaling in the context of reproduction?
- Chemical signals that attract mates or indicate readiness. Scent molecules communicate reproductive status between individuals.
- What is a lek, and what reproductive behavior occurs there?
- A display area where males court and females choose. Males compete through displays while females select mates.
- What is nest building as a reproductive behavior?
- Constructing a safe place for eggs or young. Provides shelter and protection for vulnerable offspring.
- Which behavior most directly increases the chance of finding a mate: courtship display or hibernation?
- Courtship display. Displays directly attract mates; hibernation is for survival.
- Identify the behavior where an animal migrates to a breeding ground to reproduce.
- Breeding migration. Ensures access to optimal breeding habitat and conditions.
- Identify the term for animals mating only during a specific time of year.
- Seasonal breeding. Ensures offspring born when resources are most abundant.
- What is parental care?
- Actions by parents that increase offspring survival. Feeding, protecting, and teaching help young reach maturity.
- Identify the term for a pair bond where two parents cooperate to raise young.
- Monogamy (pair bonding). Both parents investing doubles offspring care quality.
- Identify the reproductive behavior: a salmon returns to its birth river to reproduce.
- Migration for breeding (natal homing). Returning to birthplace ensures suitable spawning conditions.
- Which behavior best increases offspring survival in herd or flock species?
- Group living that provides protection for young. Many eyes detect predators; dilution effect protects individuals.
- Identify the term for males fighting or displaying to win access to mates.
- Male-male competition. Winners gain exclusive mating rights with females.
- What is nest building most likely to increase in reproduction?
- Offspring survival by protecting eggs or young. Safe location reduces predation and environmental threats.
- What is cooperative breeding?
- Non-parents help raise young, increasing offspring survival. Extra caregivers improve feeding and protection of young.
- Identify the reproductive advantage of territorial behavior during breeding season.
- Secures resources and space that attract mates or support offspring. Good territories show male quality and provide nesting sites.
- What is territorial behavior, and how can it support reproduction?
- Defending an area to secure mates and resources. Protects breeding sites and resources needed for raising young.
- What is mate choice (sexual selection by choice)?
- Selecting a mate based on traits that signal fitness or quality. Females often choose males with best genes or resources.
- What is a mating call used for in many animals?
- To attract mates and signal species identity and readiness. Sound travels far and helps same-species recognition.
- Which behavior increases fertilization success in internal fertilization: copulation or shedding skin?
- Copulation. Direct sperm transfer ensures fertilization; shedding aids growth.
- What is a pheromone in the context of reproduction?
- A chemical signal that attracts mates or signals reproductive status. Airborne molecules trigger mating behaviors in receivers.
- Which behavior most directly increases offspring survival after birth: parental care or molting?
- Parental care. Care directly helps young survive; molting is growth-related.
- What is mate guarding?
- Staying with a mate to reduce mating with rivals. Prevents other males from fertilizing the female's eggs.
- Identify the term for one male mating with many females in a breeding group.
- Polygyny. Maximizes male reproductive output with multiple partners.
- Which behavior most increases reproductive success in animals whose young need long care?
- Forming pair bonds and sharing parental care. Two parents can better feed and protect dependent young.
- Which behavior reduces the chance of mating with the wrong species?
- Species-specific courtship signals. Prevents hybrid offspring that may be less fit.
- Which behavior best increases fertilization success in species with external fertilization?
- Synchronized release of eggs and sperm. Timing ensures sperm meets eggs in water before dispersal.
- Which behavior directly helps offspring survive by providing food, warmth, or protection?
- Parental care. Increases offspring survival rates through active investment.
- What is incubation behavior in animals that lay eggs?
- Keeping eggs warm and protected until hatching. Body heat and protection ensure successful egg development.
- Which behavior helps ensure access to food and nesting sites for offspring: territorial defense or basking?
- Territorial defense. Territory provides resources; basking regulates temperature.