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- 6) In the cnidarians, Choanocytes, the cells responsible for filtration, are located in the ectoderm. The cnidocytes, located in the endoderm, are the cells specialized in capturing prey. Cnidocysts, located in the ectoderm, are the cells specialized in prey capture. Choanocytes, located in the ectoderm, are the cells specialized in prey capture. The cnidocytes, located in the ectoderm, are the cells specialized in prey capture.1. What would be the effects if metamerism is absent in annelids? 2. Account for the variety of environment occupied by annelids and relate them to their morphological and physiological adaptations.4. The Malpighian tubules of insects grind food into find particles before it goes to the hind-gut have ostia around the outer edge are functionally equivalent to the vertebrate kidney secrete juvenile hormone are found in the mesothorax 5. Lepidoptera caterpillars differ from sawfly caterpillars by having more prolegs by having parthenogenesis in many species by having a pair of stemmata rather than multiple stemmata on each side by being crochets on their feet in movement through looping for some family 6. Hemipterans are also known as book lice have piercing and sucking mouthparts are hexapods are endopterygotes include aphids, scale insects and earwigs
- 1. In Deuterostomes, nutrient molecules (monomers) are taken into the space between the endoderm and the ectoderm because a) the ectoderm makes protein for movement, b) the endoderm cells release hydrolytic enzymes that act on polymers, c) the endoderm releases enzymes that carry out dehydration synthesis of proteins. d) mRNA polymerase causes transcription. e) all are correct. 2.The Amoeba cell exhibits specialized abilities that enable it to react to a stimulus by producing a response or a behavior. It can do this because it has adapted properties exhibited by simpler more primitive cells. These cellular properties include a) Separation of the fluid environments inside and outside the cell. b) Active transport of Na+ out of and K+ into the cell, c) diffusion of Na+ in to and K+ out of a cell in reaction to a stimulus, d) the stimulus interacting with a receptor site in a membrane embedded protein, e) All of these are true.54. In protostomes and deuterostomes, the space between the endoderm and the ectoderm is important because: a) it provides a perfect environment that can be maintained for all the cells even if the outside environment change b) protostomes use their ectoderm to develop digestive organs inside it c) deuterostomes develop their brain from the mesoderm in this space d) the endoderm forms the immune system in this space, e) all are important.-4. In the diagram below, the stages of development in a frog embryo are NOT arranged in the correct order. In what order should they be placed to show the normal sequence of development in the embryo? What process is occurring in this diagram? B. D Dorsal lip of blastopore Dorsal lip of blastopore Dorsal lip of blastopore Dorsal lip blastopon
- 1.What is the relationship of prolactin to hatching egg naturally? 2.What is the relationship between relative humidity and temperature inside the incubator compartment? 3.How does relative humidity effect embryonic devslopment? 4.What will happened to the developing embryo if all vents in the incubator are closed?why?8. The major event in the embryonic development of animals that results in a layered embryo is called Group of answer choices choanoflagellation transmogrification ecdysis compartmentalization desagellation gastrulation gelatinization cephalizationO potassium ions O sodium ions Question 18 In sea urchins, which of the following pairs of events most directly results in the short-lasting "fast block" and the longer-lasting "slow block" to polyspermy, respectively? O formation of the jelly coat and the vitellin membranes O the cortical reaction and the formation of yolk protein O the acrosomal reaction and vitellogenesis O membrane depolarization and the cortical reaction Question 19 Which of the following correctly describes a difference between the vegetal pole of a frog zygote and the animal pole? O The blastomeres originate only in the vegetal pole. O The vegetal pole has a higher concentration of yolk. O The polar bodies bud from this region. The vegetal pole cells undergo mitosis, but not cytokinesis. 1
- Which of the following is true about Sea urchin blastula formation and fate map? a) ectoderm that develops into the larval skin and neurons, is regularly produced by the vegetal half of the embryo. b) an1 layer generates cells that can enter either the ectodermal or endodermal organs of the larva. c) veg2 layer forms the endoderm, coelom (internal mesodermal body wall), and the non- skeletogenic mesenchyme. d) small micromeres differentiate into the PGCS e) large micromeres differentiate into the secondary mesenchyme cells1.State the functions of each egg part 2. What are the roles of the egg in animal development? 3. What about in plants, what is the counterpart of egg in plants? Why? 4. Compare between again and reptilian eggs.1. Define sessile. Name an invertebrate with a sessile adult stage. 2. Sponges have specialized cells called collar cells. Describe how collar cells are specialized for the functions they serve. 3. What is a nematocyst? What is its function? 4. How do coral reefs form? 5. How do free-living nematodes contribute to the carbon cycle? 6. Describe the basic body plan of a mollusk. 7. What are gills? What is their function?