According to the video shown in class, evidence that whales evolved from land ma
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According to the video shown in class, evidence that whales evolved from land mammals comes from finding fossils of whales with legs. The similar way whales swim and dogs run. The fact that fish have vertical tails and whales have horizontal tails. All of the above. What is the simplest type of eye capable of focusing an image on its retina. Pin eye cup eye. An eye with a lens. An eye with a iris diaphragm. Looking at the may different kinds of eyes found in present-day animals, one can say only mammals can see objects. Human eyes are more like insect eyes than octopus eyes. Human eyes evolved from simpler eyes. All eyes need a lens to focus the image. Which of these behaviors does have any genetic component? Hybrid lovebirds making nests, rats learning to avoid certain tastes. Chick fear-crouch response. All have some genetic component. In Japanese macaques, the last group to learn the new potato washing behavior was juvenile females. Juvenile males. Adult females. Adult males. The fear-crouch response seen in new born chicks shown that instincts evolve when the cost of learning the behavior is high. The triggering stimulus remains the same generating after generation. It gives individuals a survival advantage over individuals who lack the instinct. All of the above. Animals can avoid serious fights over resources by using ritualized displays. Which of these in understood as a threat display? Ears pulled back in dogs. Yawning in baboons. Grimacing in monkeys. Presenting in chimps. Why haven't the genes for altruistic behaviors(like giving warning calls) gone extinct? Natural selection is a very slow process. Altruism is never seen in animals. The altruistic behavior helps kin who also carry the genes for that behavior. The reason is still not understood. The reason most species of animals do not form social groups is because nonspecific's are their closest competitors. They don't have any predators. Their food is abundant. They are genetically monolithic. In his studies of bat mating systems. Dt. Morrison used radio tracking and bat feeding stations. DNA fingerprinting artificial hollow trees. All of the above. How do scientists explain the fact that both humans and vampire bats help nonspecific's who are not genetic relatives? Direct altruism. Kin selection. Reciprocal altruism. Disruptive selection. In the Hammer headed fruit bat, females come to the leek to mate with the male with the deepest voice the biggest eyes the safest tree hollow. The best feeding territory Our Universe is 13.8 billion years old. This estimate was based on red-shifted light from galaxies radioisotope dating of meteorites. The half-life or heavy elements. The inorganic geochemical record.Explanation / Answer
13. Evidence that whales evolved from land mammals comes from D. All of the above
Because there are fossils of whales with legs, known as the Rodhocetus, the similarity in the way the whales can swim and dogs can run as evident by the fossil of Pakicetids and the difference in the tail pattern of fish and whales is an evidence of their separate lineage.
14. C- An eye with a lens is the simplest type of eye capable of focusing an image on its retina.
Insect eyes have evolved from this type of eyes
15. D. All eyes need a lens
Because the simplest type of eyes found in primitive insects from wich the compound eyes have evolved, had a lens to focus the image on the retina.
16. D. All have some genetic component.
Because the genes influence the morphology and physiology which forms a framework within which the behavior is shaped.
17. D. Adult males in the Japanese macaques, were the last group to learn new potato washing behavior.
This is because the older males were ignorant of the new behavior and later got accustomed to it. Whereas the females were first to learn it and the juveniles imitated their mothers.
18. The fear crouch response seen in newborns chicks show that instinct evolved when B. the triggering stimulus remains the same generation after generation.
This response along with freezing is the same generation from generation. It is in response to an alarm sensed. The stimulus is a preying bird.
19. B. Yawning in baboons
Because baboons use the different type of yawning to send messages. More intense yawn showing gums and teeth is used during tension and can be considered as a signal to threat.
20. C- Altruistic behavior helps kin who also carry the genes for that behavior.
21.A. Their conspecifics are their closest competitors
This can be in terms of food, mating partner or habitat.
22. C- Artificial hollow trees
Because the harem organization in bats which is beneficial to mating was an environmental factor.
23. Both humans and vampire bats help conspecifics who are not genetic relatives due to the C. reciprocal altruism in response to advantage for survival.
24. C- safest tree hollow
Because it provides a shelter for their copulation behavior.
25. B- radioisotope dating of meteorite
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