Why do some animals lay fewer eggs?
Increased predation pressure experienced by open-nesting birds also causes them to lay smaller clutches than cavity-nesting birds, literally having fewer eggs in one basket to spread the risk.”
Why does a fish lay a large number of eggs at a time?
fish lays thousands of eggs because some of them are eaten by big animals and some of them don’t get enough Oxygen and some more things that they can’t grow , So fish has to lay many Eggs so that so of them becomes a new one.
What animals that lay few eggs?
Oviparity occurs in all birds, most reptiles, some fishes, and most Arthropoda. Among mammals, the monotremes (four species of echidna, and the platypus) are oviparous.
Why do larger animals have fewer offspring?
Tiny Litters The presence or absence of predators is an important factor influencing the size of offspring and litters. In general, when comparing closely related snakes, the one with fewer natural predators often produces litters of fewer, larger young than those from predator-rich environments.
Which animal lay egg in soil?
(vi) Snakes and turtles lay eggs on the ground. Nearly all animals protect their young ones and take care of them.
Why do fish and amphibians produce so many eggs?
Fish and amphibians will typically produce more eggs while reproducing than mammals and reptiles. This is due, in part, to the method of egg fertilization during which amphibians and fish fertilize the eggs externally, while mammals and reptiles fertilize eggs internally. Become a Study.com member to unlock this answer!
Why do birds have fewer eggs than fish?
Female octopuses care for their eggs until they hatch, but the ones that produce more well-developed young have fewer eggs than the ones that hatch tiny young. Birds are more evolved than fish, reptiles, and amphibians in that they care for their young after laying the eggs.
Why are birds more evolved than fish and reptiles?
Birds are more evolved than fish, reptiles, and amphibians in that they care for their young after laying the eggs. Their care of the babies until they can fend for themselves makes a higher percentage of the babies live. Conversely, few fish, reptiles, or amphibians care for their eggs, they just lay them and leave.
Why do fish lay so many eggs at one time?
Fish lay a large number of eggs because only a few of them, out of thousands, will be fertilized and produce a fish. This is because they are fertilized outside of the body and are highly sensitive to temperature changes and external factors. Female salmon, for instance, will lay anywhere from 1,500 eggs to about 10,000 at one time.
What is the difference between laying eggs in reptiles and amphibians?
Answer. The difference between laying eggs in reptiles and amphibians is B. REPTILES LAY THEIR EGGS ON LAND AND AMPHIBIANS LAY THEIR EGGS ON WATER. Amphibians can live in both land and water. The first part of their life development must be lived in water, as they age, they grow lungs which help them breathe on land. They lay their eggs on water…
Why do reptiles lay soft shells while birds don’t?
Wild birds develop their egg shells by eating the shells of snails and other similar animals. Well, that’s a bit of a misconception; the eggs of some reptiles are soft when they’re laid, but harden later on. But basically, it has to do with their parenting methods. As David said, reptiles don’t incubate their eggs.
Birds are more evolved than fish, reptiles, and amphibians in that they care for their young after laying the eggs. Their care of the babies until they can fend for themselves makes a higher percentage of the babies live. Conversely, few fish, reptiles, or amphibians care for their eggs, they just lay them and leave.
Female octopuses care for their eggs until they hatch, but the ones that produce more well-developed young have fewer eggs than the ones that hatch tiny young. Birds are more evolved than fish, reptiles, and amphibians in that they care for their young after laying the eggs.
