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Animals (Reproduction Layan (-Hermaphrodites, which produce both eggs and…
Animals
Reproduction Layan
-Hermaphrodites, which produce both eggs and sperm in the same animal body.
-Fertilization occurs when the sperm penetrates the egg to form a fertilized egg cell called the zygote.
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habitat fajer
terretrail: live on land, ex. forests and deserts
freshwater: live on fresh water, ex. lakes
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marine: live on sale water, ex. oceans
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Support shomookh
- Between 95 and 99 percent of animal species are invertebrates—animals without backbones.
- The bodies of many invertebrates are covered with exoskeletons, which are hard or tough outer coverings that provide a frame work of support.
- Some invertebrates, such as sea urchins and sea stars, have internal skeletons called endoskeletons. If an animal has an endoskeleton and a backbone, it is called a vertebrate.
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