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A: Answer
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Q: Describe three key amniote adaptations for life on land
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A: INTRODUCTION Given below is the comparison between insects and arachnids.
write a paragraph that discusses the evolution of viviparity in amniotes.
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- Draw and describe the stages of embryonic development of chordates. Cleavage Gastrulation Neurulation OrganogenesisImagine that you are asked to predict the reproductive mode (oviparous or viviparous) for a number of newly discovered amniote species. In your own words, and giving examples, explain why this task would be easy for some groups of amniotes but very difficult for other groups of amniotes.Compare the process of gastrulation in amphioxus and birds
- Define amniotesAristotle classified all warm-blooded fur-covered tetrapod vertebrates that give birth to live young as: the viviparous quadrupeds the malacostraca the fish the ostracoderms the oviparous quadrupedsDescribe the phases of embryonic development in a chordate. Recognize the difference between a blastula and gastrula.
- Describe amniote adaptations to life on landDraw and describe the different types of egg as to the distribution of yolk they contain. Give examples of chordates that have the said type of egg. Alecithal Meiolecithal Mesolecithal PolylecithalWhich of the following statements is correct for all amniotes? A. They have internal fertilization, three embryonic membraes, are independent of water for reprodction B. They have external fertilization if they live in water, have alantoic membranes to carry oxygenated blood to the embryo, and lack a shell on their eggs. C. They lay eggs covered with a shell, are viviporous and have a marsupium D. They have an embryonic chorionic membrane that becomes part of the placenta, has cells with Golgi bodies,and a yolk sac E. They have three embryonic membranes, have notochords, and are ovoviviparous.
- The largest cycloneuralians are also the only ones with external fertilization. Which phylum is this? Explain the relationship between adult body size, mode of fertilization, and type of larval development in marine invertebrates.Draw and describe the two types of fertilization. Which representative chordates exhibits each type of fertilization. Internal fertilization External fertilizationthe phylum of animals in which many species possess a radula for feeding is