16 Questions
Tadpoles emerge from ______ and begin to feed on algae and small organisms.
eggs
Female frogs lay ______ in water, typically in clusters or strings.
eggs
Tadpoles have a ______ and gills, which allow them to breathe underwater.
tail
Frogs inhabit a range of ______, including ponds, lakes, forests, and grasslands.
habitats
During metamorphosis, tadpoles transform into ______ frogs, losing their tail and gills and developing lungs.
adult
Adult frogs have a ______ body shape, with a rounded body, long legs, and no tail.
distinctive
Adult frogs have a ______ skin that helps them to breathe and regulate their body temperature.
moist
Frogs have ______ feet for swimming and jumping.
webbed
Match the following stages of tadpole development with their characteristics:
Larval stage = Feeding and growing, with a tail and gills Transitional stage = Development of limbs and lungs, absorption of tail Metamorphic climax = Rapid transformation into a froglet Egg stage = Embryonic development within the egg
Match the following adaptations with their environments:
Webbed feet = Aquatic environments Moist, permeable skin = Aquatic environments Strong jumping legs = Terrestrial environments Waterproof skin = Terrestrial environments
Match the following characteristics with their descriptions:
Streamlined, elongated body = Body shape of an adult frog Moist, smooth, and often camouflaged = Skin of an adult frog Four limbs, with hind limbs larger than forelimbs = Limbs of an adult frog Large eyes, tympanic membrane, and a highly developed sense of smell = Sensory organs of an adult frog
Match the following stages of frog development with their durations:
Egg stage = 2-5 days Tadpole development = Several weeks to months Metamorphosis = Several weeks to months Adult frog stage = Variable, depending on the species
Match the following biological processes with their triggers:
Metamorphosis = Increase of thyroxine Egg fertilization = External fertilization by the male frog Tadpole development = Feeding on algae and small organisms Adult frog development = Completion of metamorphosis
Match the following characteristics with their purposes:
Webbed feet = Swimming and diving Moist, permeable skin = Gas exchange Strong jumping legs = Locomotion Waterproof skin = Preventing water loss
Match the following stages of tadpole development with their physiological changes:
Larval stage = Development of gills and tail Transitional stage = Development of limbs and lungs Metamorphic climax = Resorption of gills and tail Egg stage = Embryonic development within the egg
Match the following frog characteristics with their functions:
Large eyes = Sensing the environment Tympanic membrane = Hearing Highly developed sense of smell = Detecting food and predators Moist, smooth skin = Regulating body temperature
Study Notes
Life Cycle of a Frog
Egg Stage
- Female frogs lay eggs in water, typically in clusters or strings
- Eggs hatch into tadpoles after 2-5 days, depending on species and environmental conditions
- Eggs are fertilized externally, and the embryo develops within the egg
Tadpole Development
- Tadpoles emerge from eggs and begin to feed on algae and small organisms
- They have a tail and gills, which allow them to breathe underwater
- Tadpoles go through a series of molts, increasing in size and developing their organs
- During this stage, they are vulnerable to predators and must hide or swim to avoid detection
Habitat and Adaptation
- Frogs live in aquatic and terrestrial environments, depending on the species
- They inhabit a range of habitats, including ponds, lakes, forests, and grasslands
- Adaptations to their environment include:
- Camouflage and color-changing abilities to blend in with surroundings
- Webbed feet for swimming and jumping
- Sticky pads on their feet for climbing and perching
Metamorphosis
- After several weeks or months, depending on the species, tadpoles undergo metamorphosis
- During this process, they transform into adult frogs, losing their tail and gills and developing lungs
- The transformation is triggered by hormonal changes, and it can take several weeks to complete
Adult Frog Characteristics
- Adult frogs have a distinctive body shape, with a rounded body, long legs, and no tail
- They have a moist, permeable skin that helps them to breathe and regulate their body temperature
- Adult frogs are carnivorous, feeding on insects, worms, and other small invertebrates
- They have a highly developed sense of hearing and vision, and can jump long distances to catch prey or escape predators
Life Cycle of a Frog
Egg Stage
- Female frogs lay eggs in water, typically in clusters or strings
- Eggs hatch into tadpoles after 2-5 days, depending on species and environmental conditions
- Fertilization occurs externally, and the embryo develops within the egg
Tadpole Development
- Tadpoles emerge from eggs and begin to feed on algae and small organisms
- They have a tail and gills for underwater breathing and respiration
- Series of molts enable tadpoles to increase in size and develop their organs
- Vulnerability to predators during this stage necessitates hiding or swimming for survival
Habitat and Adaptation
- Frogs inhabit aquatic and terrestrial environments, depending on the species
- They occupy diverse habitats, including ponds, lakes, forests, and grasslands
- Adaptations to their environment include camouflage, color-changing abilities, webbed feet, and sticky pads on their feet
Metamorphosis
- Tadpoles undergo metamorphosis, transforming into adult frogs after several weeks or months
- This process involves the loss of their tail and gills, and the development of lungs
- Hormonal changes trigger the transformation, which takes several weeks to complete
Adult Frog Characteristics
- Adult frogs have a distinctive body shape, featuring a rounded body, long legs, and no tail
- Their moist, permeable skin enables breathing and body temperature regulation
- Adult frogs are carnivorous, feeding on insects, worms, and other small invertebrates
- They possess highly developed senses of hearing and vision, and can jump long distances to catch prey or evade predators
Life Cycle of a Frog
Metamorphosis
- Involves transformation of a tadpole into a frog through significant physical changes
- Physical changes include development of limbs and lungs, resorption of gills and tail, and transformation of skin and organs
- Triggered by hormonal changes, particularly the increase of thyroxine
Egg Stage
- Female frogs lay eggs in clusters or strings in aquatic environments
- Eggs are fertilized externally by the male frog
- Embryonic development occurs within the egg, taking 2-5 days
- Eggs hatch into tadpoles, which then begin to feed on the yolk sac
Habitat and Adaptation
- Frogs inhabit both aquatic and terrestrial environments, depending on the species
- Aquatic adaptations include webbed feet for swimming and diving, and moist, permeable skin for gas exchange
- Terrestrial adaptations include strong jumping legs for locomotion, and waterproof skin to prevent water loss
Adult Frog Characteristics
- Body shape is streamlined and elongated with a rounded snout
- Skin is moist, smooth, and often camouflaged
- Frogs have four limbs, with the hind limbs larger than the forelimbs
- Sensory organs include large eyes, tympanic membrane (eardrum), and a highly developed sense of smell
Tadpole Development
- Tadpoles hatch from eggs and begin feeding on algae and small organisms
- Tadpoles go through three development stages: larval, transitional, and metamorphic climax
- Larval stage involves feeding and growing, with a tail and gills
- Transitional stage involves development of limbs and lungs, and absorption of tail
- Metamorphic climax involves rapid transformation into a froglet
- Tadpole development takes several weeks to months, depending on the species
This quiz covers the different stages of a frog's life cycle, from egg stage to tadpole development. Learn about the process of fertilization, hatching, and growth.
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