Animalscaretips
Fertilization - page 3
Which animal produces a hard-shelled egg that matures outside the mother?
Most fish, amphibians, reptiles, dinosaurs, birds, monotremes, arthropods and molluscs lay eggs outside the mother's body. They are always in some kin...
When can you say that fertilization in sexual reproduction took place?
After the sperm reaches the egg, fertilization takes place. Most external fertilization happens during the process of spawning where one or several fe...
Does a stickleback use internal or external fertilization?
Short fertilization times are generally assumed for externally fertilizing fish such as the three-spined stickleback (Gasterosteus aculeatus). In this...
What are the 2 kinds of fertilization?
But the fusion of gametes may take place inside or outside the body. Based on this, fertilization is of two types – internal and external fertilizatio...
Why do land animals fertilise internally?
Internal fertilization has the advantage of protecting the fertilized egg from dehydration on land. The embryo is isolated within the female, which li...
Why do animals that use external fertilization release large numbers of eggs?
External fertilization in an aquatic environment protects the eggs from drying out. ... Therefore, millions of eggs must be produced by individuals. T...
Are fish fertilized externally or internally?
Fertilization is external in most fish species. Large quantities of eggs and sperm are simultaneously released into the water by females and males. Th...
Why do animals have internal fertilisation?
Internal fertilization protects the fertilized egg or embryo from predation and harsh environments, which results in higher survival rates than can oc...
What is type of fertilisation?
In fertilization, male and female sex cells or gametes fuse to form a single cell called a zygote. ... These include external fertilization in which e...