Bullfrogs do not have mammary glands. This is because mammary glands are features found only on mammals, and bullfrogs are not mammals, but are amphibians.
REPTILES:
Reptiles do not have mammary glands and are incapable of nursing their young in the same fashion as mammals.
BIRDS:
Birds don't have nipples, as they are not mammals. Although, we talk about birds' breasts they don't have mammary glands which mammals use to feed their young milk.
MAMMAL:
Like hair, mammary glands are uniquely mammalian. These glands develop from distinctive mammary ridges running along both sides of the trunk of a mammalian embryo. Mammary glands are found in both sexes, but cease development in males well before puberty.
Answers & Comments
CHARACTERISTICS
MAMMARY GLANDS
FISH:
fish do not have mammary glands
AMPHIBIANS:
Bullfrogs do not have mammary glands. This is because mammary glands are features found only on mammals, and bullfrogs are not mammals, but are amphibians.
REPTILES:
Reptiles do not have mammary glands and are incapable of nursing their young in the same fashion as mammals.
BIRDS:
Birds don't have nipples, as they are not mammals. Although, we talk about birds' breasts they don't have mammary glands which mammals use to feed their young milk.
MAMMAL:
Like hair, mammary glands are uniquely mammalian. These glands develop from distinctive mammary ridges running along both sides of the trunk of a mammalian embryo. Mammary glands are found in both sexes, but cease development in males well before puberty.
✏ DIRECTION
Choose which type of animals have the same characteristics as listed on the left.
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✏ ANSWER
➀ Dry scales
➸ Reptiles
➁ Moist skin
➸ Amphibians
➂ Lateral line
➸ Fish
➃ Undergoes metamorphosis
➸ Fish and Amphibians
➄ Cold blooded
➸ Fish, Amphibians, and reptiles
➅ Warm blooded
➸ Mammals and birds
➆ Have lungs for breathing
➸ Reptiles, Birds, Amphibians, and Mammals
➇ Mammary glands
➸ Mammals
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Explanation:
➙ I researched
Hope it helps.
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