Question

State Ty zip Code 1705 Based on pages 820-841, 852-869, 880-897, and 908-923 in your textbook 51-56 in your study guide. and discussions Circle T if the statement is true; F if it is false. During embryonic development, the vertebral column is replaced by the notochord 2. TF The ncural crest is important because several significant vertebrate features develop from it. 3. TF There are more species of living fishes than of all other species of vertebrates combined. 4. TFCrayfish, jellyfish, and shellfish are true fishes. . TFFishes are poor bioindicators of the environmental health of an aquatic system. 6. T F Most amphibians have characteristics that include four legs, moist skin without scales, lungs, and a double-loop circulatory system. In recent decades, amphibian populations increased worldwide leading to increased competition for food and other resources. 7. TF Reptiles are able to survive on land because of characteristics that include a shelled egg, scaly skin, and efficient circulatory and respiratory systems. 8. TF Birds have adaptations that include feathers, lightweight bones, and the ability to generate their own body heat. . TF 0. TFAs a rule, the teeth in a given mammal's mouth look very similar because they all IL. TF Class Mammalia is divided into two subgroups: marsupials and placental mammals. 12. T F As a practical matter, it is rather casy to distinguish innate behaviors from learned have the same function. behaviors in animals. continue American School-Lansing, IL 2341A

Answer 1

Answer 1. True.

Notochord is present in the early stages, it is a significant feature of the Chordata.

Answer 2. True.

Answer 3. True

The number has reached to 33100 species, surpassing the other mammals, birds, amphibians, and the reptiles.

Answer 4. False

Some belong to phylum-porifera some to molluscs, whereas true fishes belong to the class pisces.

Answer 5. False

Salmon is used as an indicator

Answer 6. True as seen in the member of amphibian Eg. Frog

Answer 7. False.

The population has decreased because of the global change in the climate and because of the disease chytridiomycosis.

Answer 8. True Eg is crocodile

Answer 9. True. These are the adaptations with Aves. Pneumatic bones helps in flying.

Answer 10. False

Different organisms have different teeth, because functionally they are different and give different appearance to the jaw.

Answer 11. False

They are divided into Monotreme, Marsupials and placental animals

Answer 12. True