Reproduction and Growth of Animals

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Reproduction Noun

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[ree-pro-duk-shun]

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Reproduction

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The biological process by which new individual organisms, known as offspring, are produced from their parent or parents.

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Example: The image shows how a new hydra forms from a parent hydra through budding.

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Behavior Noun

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[bi-heyv-yer]

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Behavior

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The way an organism reacts to other organisms or to changes and stimuli within its environment.

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Example: A dog salivates when a bell rings, showing a conditioned response to stimuli.

Front

Courtship Behavior Noun

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[kort-ship bi-heyv-yer]

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Courtship Behavior

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A set of specific actions an animal performs to attract a mate and signal its desire to reproduce.

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Example: A bird displays its feathers to attract a mate, demonstrating courtship behavior.

Front

Pheromones Noun

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[fair-uh-mohnz]

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Pheromones

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Chemical substances released by an animal that affect the behavior of others of its species, especially for attracting mates.

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Example: The image shows how moths use pheromones to find mates, with a female releasing and a male detecting the chemical.

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Stimuli Noun

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[stim-yuh-lie]

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Stimuli

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Events or changes in the internal or external environment that cause a specific functional reaction in an organism.

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Example: A cactus pricking a girl's finger shows how a stimulus (prick) causes a reaction (pain).

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Sensory Receptors Noun

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[sen-suh-ree ri-sep-terz]

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Sensory Receptors

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Specialized cells or nerve endings that detect stimuli, such as light, sound, or chemicals, from the environment.

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Example: Sensory receptors in skin detect touch, pressure, and temperature.

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Arachnologist Noun

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[uh-rak-nol-uh-jist]

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Arachnologist

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A scientist who specializes in the scientific study of spiders and related animals like scorpions, mites, and ticks.

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Example: An arachnologist studies spiders and related animals, like the one shown in the person's hands.

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Pedipalps Noun

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[ped-i-palps]

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Pedipalps

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The second pair of appendages on an arachnid, used for sensing, manipulating prey, and transferring sperm in males.

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Example: The image shows the pedipalps on a spider, highlighting their position and function.

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Offspring Noun

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[awf-spring]

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Offspring

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The young organisms born to living things, produced either by a single parent or through sexual reproduction.

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Example: The image shows a hydra producing offspring through budding, illustrating asexual reproduction.

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Innate Behavior Noun

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[in-eyt bi-heyv-yer]

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Innate Behavior

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A behavior that is genetically determined and inherited from parents rather than being learned through experience or observation.

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Example: Birds migrate instinctively, following genetic patterns shown by arrows on the map.