Most frogs hatch from eggs and start life as fully aquatic tadpoles. ©iStock.com/Suwatwongkham Like mostamphibians, nearly all species of frogs and toads lay eggs. They fertilize their eggs and raise their young in various different ways depending on their species. Most commonly, female frog...
题目 四、 任务型阅读(共5小题,每小题2分,共10分)跨学科)生物(新独家原创,★★☆)Where do frogs (青蛙) come from? _ 41_ Do they look like frogs or fish? Let's read on and find out the truth. A mother frog lays many eggs. 42_ The eggs hatch (孵出) and babies are born. Th...
Frogs:Frogs are members of several species that make up a group of amphibians. The other types of amphibians are toads, salamanders, newts, sirens, and caecilians.Answer and Explanation: Frogs use their integumentary system at all times. The primary function of the integumentary system in all ...
However, the mother does not lay the eggs outside of her body for the babies to finish developing. She keeps them inside her until the babies are fully developed. The young snakes hatch out of their eggs while still inside their mother, and she then gives birth to them. In ovoviviparous...
How many eggs can amphibians lay? Can amphibians have gills? Do all amphibians breathe through their skin? How do amphibians move on land? Where do amphibians reproduce? What types of amphibians don't hatch from eggs? Are all amphibian eggs soft?
In this species,female frogs attach jellylike clumps(果冻一样的块状物)of their eggs to the undersides of leaves.The leaves hang on branches that dangle(悬挂)over ponds.After they hatch from the eggs,the tadpoles(蝌蚪)then fall into the water,where they eventually grow...
The Helmeted Water Toad is also one of the bird-eating frogs that mates in high numbers. The female frog lays up to 10.000 eggs in the water. Around 1.000 of these will eventually hatch into Helmeted Water Toads. 4. Cane Toad
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In this species,female frogs attach jellylike clumps(果冻一样的块状物)of their eggs to the undersides of leaves.The leaves hang on branches that dangle(悬挂)over ponds.After they hatch from the eggs,the tadpoles(蝌蚪)then fall into the water,where they eventually grow intoadult frogs.Tree ...
During this time, they go through four life stages: egg, larva, nymph, and adult. After the eggs hatch, the ticks must have a blood meal at every stage to survive. Blacklegged ticks can feed frommammals, birds, reptiles, and amphibians. The ticks need a new host at each stage of the...