Altricial - Study guides, Study notes & Summaries

3 ways cowbirds find hosts - 1. sit high on perch and look around 2. walk on ground and look 3. drive birds off by scaring them so that they can lay their eggs 4 advantages of seed dispersal - -Avoids crowding competition -Prevents spread of disease -Prevents in-breeding -Saves some offspring from being eaten 5 adaptations of obligate brood parasites - 1. fast egg laying (20-40 sec for cowbirds) 2. thicker egg shells 3. fast hatching egg 4. removal of host egg prior to laying 5. baby ...

6 orders of birds cursorial psittaciformes passeriformes columbiformes anseriforms galliformes cursorial birds -flightless birds -precocial young -no keel bone ex: ostrich, emu precocial babies are more mature when born Psittaciformes -hooked bills -X shaped feet, 2 toes forward, 2 toes back -can "talk" -altricial young ex: macaw, cockatoo, parrots altricial babies not mature when born, less developed Passeriformes -songbirds, perching -not often kept as pets -deve...

_____ eggs have elaborate nests why? - small because these young birds stay in nests for a long time after birth (they are altricial) ______ eggs have litte effort in nest building - big ________ moving animals tend to be hermaphroditic - 1) slow Antlers are used as an indicator of: - 1. age Are clams ectoparasites? - Only baby clams Are ectoparasites normally flat bodied or round bodies? - Flay bodied Are intromittent organs always on display? - no, when it is not needed it is typically...

1# problem for predators - Starvation Active searching - (search and capture) Walking around until they pick up a trail of prey. Wolfs, wolf spiders, Tiger beetles. Adaptations for storing food - Enlarged salivary glands that make food sticky can stick to places. Nest early, Memory (a large hippocampus provides excellent spatial memory). Chickadee's hippocampus grows larger before winter. Adaptions of Brown Headed Cowbirds - Fast egg laying, 20-40 seconds compare to hour to not get caugh...

What is not a physical method of euthanasia? - Carbon Dioxide Mice exhibit postpartum estrus. They will normally come into estrus within ______ hours after giving birth. - 24 A male ferret is called a ____ and a female is called a _____. - Hob; jill Scientific technology has developed the technique for introducing genetic material from one animal into the fertilized egg of a different animal. When the offspring are born they are called ____. - Transgenics Eating feces is termed _____. - C...

(T/F) Crop milk is similar to mammalian milk. - False (T/F) Only birds in the order columbiformes produce crop milk. - True What nonhuman primate commonly gives birth to twins? - Marmosets The gestation period in goats is ____________ days. - 143-154 How often should shelving and cage racks for rats be sanitized? - Once every two weeks At what age do dogs reach sexual maturity? - 6-10 months Do pigs defecate in a particular area in their pens? - Yes, they defecate near their waterers. A m...

What is not a physical method of euthanasia? - Answer- Carbon Dioxide Mice exhibit postpartum estrus. They will normally come into estrus within ______ hours after giving birth. - Answer- 24 A male ferret is called a ____ and a female is called a _____. - Answer- Hob; jill Scientific technology has developed the technique for introducing genetic material from one animal into the fertilized egg of a different animal. When the offspring are born they are called ____. - Answer- Transgenics...

ALAT Final Exam Practice Questions with Correct Answers What is not a physical method of euthanasia? - Answer-Carbon Dioxide Mice exhibit postpartum estrus. They will normally come into estrus within ______ hours after giving birth. - Answer-24 A male ferret is called a ____ and a female is called a _____. - Answer-Hob; jill Scientific technology has developed the technique for introducing genetic material from one animal into the fertilized egg of a different animal. When the offspri...

ZOL1502 Exam Notes. Detailed working, solutions, memo, notes & explanations. 1. Sinus venosus is a a. Vein from sinuses to the heart. b. Large chamber receiving blood from the body. c. Diverticulum of the alimentary system d. Base of truncus arteriosus e. A complex of sinuses proximal to the kidneys 2. By the late Carboniferous, the amniotes had separated into three lineages which are a. Turtles, Sphenodons and Amphisbaenians b. Turtles, Thecodonts and Ichthyosaurs c. Anapsids, Synapsi...

ALAT Final Exam Practice | 100% Correct Answers | Verified | Latest 2024 Version What is not a physical method of euthanasia? - Carbon Dioxide Mice exhibit postpartum estrus. They will normally come into estrus within ______ hours after giving birth. - 24 A male ferret is called a ____ and a female is called a _____. - Hob; jill Scientific technology has developed the technique for introducing genetic material from one animal into the fertilized egg of a different animal. When the o...