What is the advantage, if any, of direct development in gnathostomulids? 2. What are the implications of the reproductive strategies of rotifers in their survival?
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1. What is the advantage, if any, of direct development in gnathostomulids?
2. What are the implications of the reproductive strategies of rotifers in their survival?
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Solved in 4 steps
- 1. What are the characteristics of acanthocephalans that support their parasitic nature? Cite examples. 2. What is the advantage, if any, of direct development in gnathostomulids?1. How do the larval forms of the trematodes and the cestodes differ? 2. How do their life cycles differ?The first juvenile larva of Ascaris is known as- (A) Filiform larva (B) Rhabditiform larva (C) Miracidium larva (D) Microfilariae
- 1. What are the implications of the reproductive strategies of rotifers in their survival? 2. What are the major adaptations that allow nemertines to thrive in the marine environment? Support your answer.1. State the function of the following parts of the genus Romalea (grasshopper): antenna, tympanum, spiracles, ovipositor (female), gastric caeca, malphigian tubules, tracheae, air sacs What are the hairlike appendages called that anchor into the skin of annelids? What structures do earthworms have to help dispose of nitrogenous wastes? Briefly describe how earthworms reproduce and what structures are involved.1. Indicate the Phylum, Class, Order, Family, Genus and the species name of any one grasshopperof agricultural importance. 2. What is the difference between a swarm and a hopper band? 3. What is the evolutionary significance of parthenogenesis in the Class Insecta? 4. What is the scientific name of the locust causing havoc currently in the horn of Africa? 5. How does paurometabolous metamorphosis differ from hemimetabolous metamorphosis?
- 1. What would you say is the most important function or role of arthropods and why? 2. What are the major similarities and differences between parasitic and free-living nematodes?1. How are the lifestyle (free – living vs parasitic) related to the morphology of the annelids? 2. What are the different adaptations of phylum Annelida in different habitat?1. Among the phylum porifera, Cnidaria, platyhelminthes, annelids, mollusca, Nematoda, Arthropoda, echinodermata, and chordate, what animal phylum undergo ecdysis?
- 2. Differentiate between the rhabditiform and filariform of Ancylostoma, Necator and Trichostrongylus. 3. Why do we have to use special techniques for the recovery of pinworm eggs?1. Classify jellyfish and ant based on the following characteristics: d) Mechanism of coelom formation, if coelomate e) the origin of mouth? f) symmetry of cleavage? g) cleavage pattern, determinate or indeterminate? h) protostome or deuterostome?Reproduction is usually sexual with both male and female sexes, however asexual reproduction does exist with several unique adaptations. a) Discuss comprehensively the types of parthenogenesis and give an example of insect of each type. b) Enumerate and briefly explain four major factors that influence the ability of the female to produce eggs and the number that are oviposited