BIOL 1902 Lecture Notes - Ruffed Grouse, Baculum, Atlantic Puffin

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goldeel903

20 Jul 2012

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Internal fertilization: donors never meet, freshwater sponges just spew sperm into the water. Sperm can be delivered in packages called spermatophores. Most animals use internal fertilization with personal delivery. When needed, a penis is inflated by liquid (blood: but some animals have another type of support, os penis, baculum (penis bone for support) carnivores, bats. Not all auditory advertisements are vocal: woodpeckers use their bills, they drum instead, ruffed grouse drum with their wings. Crickets and grasshoppers rub wings and/or legs together. Stridulation: mostly produced by insects, = rubbing body parts together to make sound. Male toads and frogs have extensible throats sacs that act as resonating. Birds also advertize with vocalizations: song is a product of sexual selection, songs have two functions. Some mammals use vocalizations to attract mates: during the rut, cow moose call to attract bulls. Making courtship sounds has risks: predators and parasitoids can hear you and , cheaters called satellite males can exploit your efforts.

Related Questions

1. Invertebrates colonized terrestrial environments independently of vertebrates. However, they faced similar challenges adapting to land. A) Describe three (3) main challenges animals had to face when colonizing land. B) Vertebrates had some key traits derived during their existence in water, which later proved beneficial for colonizing land. Explain how vertebral column, jaws, lungs, and lobed fins paved the way for vertebrates to move from water into land.

C) List 4 different reproductive strategies found in animal species (e.g. parthenogenesis, hermaphroditism, external fertilization, internal fertilization, viviparity, etc). D) For each strategy, describe at least one advantage and one disadvantage.

orangeox422

1. How do marine reptiles eliminate salt?

2. Describe the function of malpighian tubules in insects?

3. What is the nitrogenous waste in the following:

-most fish

-repties

-birds

-mammals

-insects

4. What is the mode of reproduction in Protists, Cnidarians and Tunicates?

5. Compare the external and internal fertilization.

6. What is the advantage of an amniotic egg? Which animals have these eggs?

7. What is the nervous system in sponge?

This is all part of the same questions?

1) Which of the following is true of freshwater fish?

2) Which part of the functional unit of the kidney consists ofcapillaries?

3) The functional unit of a kidney is called the__?

4) The ___descends into the renal medulla only in juxtamedullarynephrons?

5) The thermostat of vertebrates is located in the?

6) Which vertebrates are generally endotherms?

7) What is a hormone that is important in both reproductivedevelopment development and adult sexual cyceles?

8)What is the advantage of asexual reproduction?

9)What is a simultaneous hermaphrodite?

10) True or False. Most animals that utilize externalfertilization also give a lot of parental care to theiroffspring?

11) True or False Most female mammals are only receptive tocopulation during one phase of the estrous cycle?

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BIOL 1902 Lecture Notes - Ruffed Grouse, Baculum, Atlantic Puffin

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