What is the structure? placenta

Transcription

1

2 What is the structure? placenta What hormones does it secrete? HCG, Progesterone, Estrogen (3 types) Whose tissue is it composed of? Maternal + embryonic Where was this organism fertilized? Oviduct What is the only extra- embryonic layer that is also found in the chicken egg? Amnion What is its purpose? Cushion, prevent drying out

3 Which of the following organisms (A,B, C,D, E, F) has: (use letters, if none, write none): Closed Circulatory System: Spiral Cleavage: Gizzard: Coelom: In addition to muscles and cilia, what does A use to move? Uric acid is secreted by which organism (s): (use letters) Hemocyanin can be found in: (use letters) The cleavage of organism D is spiral, radial, triploblastic or diblastic? Closed = B,D Spiral = A, B, C,E,F Gizzard = F Coelom = B,D,E,F (B, E,F have small one) Parenchymal = solid mass of cells Uric acid =F Hemicyanin = B, E radial 3

4 a. Is this structure to the right part of the male or female reproductive system? Neither b. What is the name of this structure? It is the glomeruli of the kidney c. What hormones does it secrete? No hormones 4

5 Name two advantages of asexual reproduction. No worry about finding mate, less energy spent on doing that, genotype is preserved Name the above organism that undergoes asexual reproduction. Give its smallest known group name and the type of asexual reproduction occurring above. Sea anemone, anthozoa, fission In what developmental stage is the notocord formed? Neurala stage What is the purpose of the allantois and how does it change over time? 1 st storage of nitrogenous waste, 2 nd gas exchange

6 Label the stage. Ovum Label the animal and vegetal pole. Dark = A, light = V Fill in the chart. Stage Defining characteristic Step Ovum Pronucleus on A side, 2 separate regions, no cleavage Gastrula Presence of blastopore 3 0 Nerula Neural tube 4 Blastula Hollow ball of cells, blastocoel 2

7 What is the type of symmetry? Radial Name the germ layers found? epidermis, gastrodermis What is the highest level of organization? True tissue What is the analogous structure to the kidney in an earthworm? Metanephridia What analogous to the pseudoheart in an Asteroidea? No heart, all circulation via WVS

8 Label the fertilization membrane What is the purpose of the fertilization membrane? Blocks polyspermy What are possible mechanisms to prevent polyspermy? 1. slow block 2. fast block What do somites become? LAB LECTURE

9 LAB LECTURE MATERIAL!!! What structure does the ulna and humerus develop from in the developmental stage? What was the original developmental layer that gave rise to the liver? Endoderm

10 What is this type of development? Holometabalous What are the growth steps? Egg larva pupa adult Is this species a protostome or deuterstome? Pro What is the exoskeleton composed of? Chitin

11 The pseudohearts are lateral to the esophagus. Name the structure for the nervous system. suprapharyngeal ganglion Respiratory pigment: hb Analogous structure in rat = pharynx What is the purpose of this structure? Digest/breakdown food What is the analogous structure in a arthropoda? Digestive caeca

12 The esophagus is to the trachea. REFER TO LAB HANDOUT The phalanges is to the scaupula. The ulna is to the radius.

13 What organism did this come from? Frog What type of cleavages occured? Holo Is it a protostome or deuterstome? deutro How is the coelom formed? From outpocketing of archenteron Name the stage that comes after this one. Ovum, morula, cleavages

14 Name the analogous structure in 1. Lumbricus Chloragogen tissue 2. Cockroach fat 3. Dugesia ACTUALLY ABOUT THIS ONE. NOT COVERED IN SECTION What is the function of the pancreas? Neutralize the acidic chyme from stomach What system is the thymus involved in? lymphatic system

15 Identify this structure. FOOT Does this organism undergo external or internal fertilization? External? What is the structure involved in nitrogenous waste and what type of waste is it. Ammonia

16 A B 1 C Put the developmental stages in order from oldest to youngest. B, C, A Name structure 1 and its purpose. Fert. Membrane Name the stage that comes after stage A, and its defining characteristic. LAB MANUAL What type of division occurs before stage C. LOOK IN LAB MANUAL

17 What is the purpose of accessory glands. Name and label two. Seminal vesicle provide sperm nutrients like frustose Coagulating gland coagulate the semen What was the evolutionary advantage of internal fertilization? More care for growing fetus,

18 Name the phylum. Annelisa Name the smallest known group. Hirudinea Name a characteristic trait of this phylum. Metanephridia How does this organism feed? Sucking thing Compare its digestive pathway to cnidaria. Complete tract

19 What phylum is found in this picture? Echinodermata Name two deuterostomes by their smallest group names. Asteroidea, echinoidea Oral or aboral? Aboral Dioceous or monocious? Dioceous What is the type of symmetry in adult? Radial And larvae? Bilateral

20 Name two advantages of internal reproduction. 1. More care for fetus 2. 2 mates have to cooperate Name the organisms that undergo external reproduction. Sea urchin, Place the organisms that undergo internal fertilization on a phylogeny using their scientific names.

21 Identify the purpose of this cell. Leydig, make T Name the analogous structure in the opposite gender. Theca Label where mature cells go with an A. Trace the development pathway including chromosomes amount and DNA amount. Spermatogonium S Phase - - > 1 st spermatocyte meiosis 2 nd spermatocyte meiosis spermatid spermatozoa

22 Identify the structure with the same role as protonephridia. Metanepridia Trace the digestive system through this organism. Mouth pharynx esophagus crop gizzard intestine anus Identify this structure. Septum Name the smallest group that contains this organism and fan worms annelida

23 What is this structure? Neural tube What does it become in the mature form? Spinal cord What is this structure? Digestive cavity What is the analogous structure in a planaria? GVC

24 What is the type of cleavage in a protostome? What forms the coelom in deuterstomes? Is an octopus a deuterostome or protostome? What type of cleavage occurs within the first few divisions of development for Xenophus?

25 Name the structure that has the function of nitrogenous waste removal for each organism and give the form of nitrogenous waste

26 What is the analogous structure of the Malpighian tubules in a Dugesia? In a oligochaete? Trace the digestive system. BSP LAB HANDOUTS Give the purpose of the digestive caeca. Sex the cockroach.

27 LAB LECTURE!!! Where would the yolk be located? What is the purpose of the yolk? What is this strucutre? What will eventually become in the mature form? What tissue layer was it formed from?