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1. Choanocytes are present in
a. Excurrent canals
b. Incurrent canals
c. Radial canals
d. Spongocoel
2. Free living platyhelminthic forms belong to the class
a. Trematoda
b. Turbellaria
c. Nematoda
d. Cestode
3. Flame cells are associated with excretory organs of
a. Schistosoma
b. Dracunculus
c. Ancylostoma
d. Ascaris
Step by step
Solved in 3 steps
- Proboscis gland is an excretory organ in a. Saccoglossus b. Carcharodon c. Myxine d. CatlaThe function of pharyngeal gills includes: ( can be more than one anwser) a. gas exchange b. generating a feeding current c. eliminating excess water during feeding d. producing a mucous net1. Insect blood cells are hemocites also carry oxygen circulate whole body including wing veins circulate only dorsal vessel are generally red 2. The followings are constructed at least partly of cuticle prothorax the peritrophic membrane appendicular ovipositor fat body esophagus 3. The correct order of mouthparts, anterior to posterior is mandibles, labrum, maxillae, labium maxillae, proventriculus, labrum, mandibles labrum, mandibles, maxillae, labium labium, gonocoxa, basalare, mandibles clypeus, labium, mandibles, maxillae, labrum
- Which of the following in sponges form the outermost epithelium-like layer that is in contact with the external, aquatic environment? a. Pinacocytes and choanocytes b. Pinacocytes only c. Choanocytes and collencytes d. Pinacocytes and collencytes e. Choanocytes only f. Collencytes onlyThe function of the contractile vacuole in many freshwater protozoans is to: a) aid in mechanical digestionb) store carbon dioxidec) eliminate wastes such as ammoniad) eliminate excess waterThe muscles of an entropneust (acorn worm) pericardium are responsible for, which of the following processes? Group of answer choices a. Blood flow. b. Coelom fluid circulation. c. Ultrafiltration. d. A & C.
- Describe the differences between protonephridia and metanephridia. Give an example of any animalthat possesses either of these structures.The osculum of a sponge is entirely blocked by a fungal infection. Predict what will happen. A)The flow of water out of the sponge will decrease. B)Water will be unable to enter the sponge. C)Choanocytes will no longer be able to function. D)Digestion will be prevented from occurring.In arthropods, the tracheal system isa. a unique set of structures that function in ingestion and digestion offood.b. a series of branching tubes extending into the body that allow for gasexchange.c. a series of tubules that allow waste products in the blood to bereleased into the digestive tract.d. the series of ommatidia that form the compound eye.e. none of the above.
- 1. The process of bringing oxygenated water or air into contact with a gas-exchange surface is: A. Respiration B. Ventilation C. Inspiration D. Exhalation 2. Why does gill comb filter out grains and sand water that into the gills? A. To allow countercurrent B. To maximize the transportation of oxygen C. To prevent gill filaments from injuries D. To increase the surface area for effective gas exchange 3. What is the function of stomata? A. Absorbing sunlight B. Allowing gases to enter and exit C. Protecting inner tissue layers D. Transporting mineralsa) How can Strongyloides and hookworms be differentiated in terms of their morphology? b) Why does A. lumbricoides need to embryonate? c) What are the distinguish characteristics of T. trichuiria and C. philippinensis? *kindly answer all questions. thank you!Alveoli is related to which of thefollowing system of human body?A. Circulatory systemB. Excretory systemC. Reproductive systemD. Respiratory system
