Description : In case of poriferans, the spongocoel is lined with flagellated cells called: (1) oscula (2) choanocytes (3) mesenchymal cells (4) ostia
Last Answer : (2) choanocytes
Description : Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of Phylum (a) Mollusca (b) Protozoa (c) Coelenterata (d) Porifera.
Last Answer : (d) Porifera.
Description : The cells of the retinal pigment epithelium: a. are of mesenchymal origin b. are shorter at the fovea than else where in the retina c. have intracellular melanosomes d. regenerate visual pigment e. form the inner outer blood-retina barrier
Last Answer : have intracellular melanosome
Description : Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct? (a) Penguin is homoiothermic while the remaining three are poikilothermic. (b) ... cells called choanocytes, not found in the remaining three. (d) All are bilaterally symmetrical.
Last Answer : c) Spongilla has special collared cells called choanocytes, not found in the remaining three.
Description : In the absence of a closed vascular system, how do sponges manage to distribute the nutritive substances from choanocytes to rest of the cells ?
Last Answer : In the absence of a closed vascular system, how do sponges manage to distribute the nutritive ... Through cell - to -cell diffusion and amoebocytes
Description : What are the main cells of which poriferans are made?
Last Answer : Sponges have their outer wall covered by flat cells called pinacocytes and having pores well-delimited by special cells called porocytes. The internal wall is filled with choanocytes, ... made of spicules and organic fibers.) Sponges Review - Image Diversity: pinacocytes porocyteschoanocytes
Description : Select the wrong statement. (a) Bacterial cell wall is made up of peptidoglycan. (b) Pili and fimbriae are mainly involved in motility of bacterial cells. (c) Cyanobacteria lack flagellated cells. (d) Mycoplasma is a wall-less microorganism.
Last Answer : (b) Pili and fimbriae are mainly involved in motility of bacterial cells.
Description : Slime molds differ from the moldy fungi A- in their mode of nutrition: phagocytosis for the slime molds; absorptive heterotroph for moldy fungi B- in that the moldy fungi produce amoeboid or flagellated cells and the slime molds do not C- Both (a) and (b) D- none of the above
Last Answer : in their mode of nutrition: phagocytosis for the slime molds; absorptive heterotroph for moldy fungi
Description : What is prominent ostia to the left renal artery?
Last Answer : (I tried to share it with the doctor here but I don’t have his name right.)
Description : What are choanocytes?
Last Answer : What are choanocytes?
Description : Assertion : Spongocoel of the sponges is also called paragastric cavity. Trophocytes are present in the spongocoel and release digestive enzym outside
Last Answer : Assertion : Spongocoel of the sponges is also called paragastric cavity. Trophocytes are present in the ... . If both Assertion and Reason are false.
Description : Animals having open circulatory system POSSESSES – (1) coelenteron (2) spongocoel (3) pseudocoel (4) haemocoel
Last Answer : (4) haemocoel Explanation: Open circulatory system is the one in which blood does not circulate only inside blood vessels but it also falls in cavities that irrigate tissues. The internal organs are suspended in a network of blood-filled sinuses or open spaces which collectively form the haemocoel.
Description : Digestion of food in Leucosolenia takes place : (a) In the spongocoel (b) In the amoebocyte (c) In the choanocyte (d) First in choanocyte and then in amoebocyte
Last Answer : (d) First in choanocyte and then in amoebocyte
Description : Animals having open circulatory system possesses : (1) coelenteron (2) spongocoel (3) pseudocoel (4) haemocoel
Last Answer : haemocoel
Description : The middle layer in body wall of porifera is or The non-cellular layer present between pinacoderm and choanoderm in body wall of poriferans is known a
Last Answer : The middle layer in body wall of porifera is or The non-cellular layer present between pinacoderm ... Msoderm B. Mesenchyme C. Mesoglea D. Mesentery
Description : Not all animals have a circulatory system. Poriferans, cnidarians, platyhelminthes and nematodes (in these there are the pseudocoelom fluid but no vessels) are avascular animals. Echinoderms do not have true circulatory systems either.
Last Answer : What is the alternative means for transport of substances in animals without a circulatory system? Why is blood important for larger animals?
Description : Poriferans and cnidarians do not have excretory systems. Do platyhelminthes have an excretory system?
Last Answer : Platyhelminthes have a primitive excretory system made of flame cells (also called solenocytes), excretory ducts and excretory pores. Image Diversity: platyhelminth excretory system
Description : Concerning tissue complexity how different are cnidarians from poriferans?
Last Answer : Cnidarians have true tissue differentiation, they present distinct organized tissues in the body. Poriferans present only some dispersed specialized cells with no tissue differentiation.
Description : Concerning digestion how are poriferans characterized?
Last Answer : Sponges are different from other animals since they present only intracellular digestion. They do not have a digestive system nor do they release digestive enzymes in the spongocoel to cause extracellular break down of nutrients.
Description : What is the typical shape of poriferans?
Last Answer : Sponges have bodies in the form of tubular vases or globes open in the upper extremity. They have an internal central cavity and porous walls. The central cavity is called spongocoel and the opening in the upper extremity is called osculum. Sponges Review - Image Diversity: sponge structure
Description : What are poriferans?
Last Answer : The phylum Porifera contains the simplest creatures of the animal kingdom. Sponges are aquatic sessile beings (they are not able to move by themselves and they keep themselves attached to ... multicellular, like all beings of the animal kingdom. Sponges Review - Image Diversity: poriferans
Description : Which of the following is a flagellated protozoan
Last Answer : Which of the following is a flagellated protozoan A. Amoeba B. Entamoeba C. Palsmodium D. Trypanosoma
Description : $ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move to the mature and dehisced archegonia, under the effect of chemicals.
Last Answer : $ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move to the mature and dehisced archegonia, under ... D. If both As and R are wrong.
Description : A fern differ from a moss in prossessing: (a) Swimming/flagellated anitherozoids (b) Flask-shaped archegonia (c) Independent Sporophyte (d) Independent gametophyte
Last Answer : Ans. ((c))
Description : Flagellated male gametes are present in all the three of which one of the following sets? (a) Zygnema, Saprolegnia and Hydrilla (b) Fucus, Marsilea and Calotropis (c) Riccia, Dryopteris and Cycas (d) Anthoceros, Funaria and Spirogyra
Last Answer : (c) Riccia, Dryopteris and Cycas
Description : Ulothrix can be described as a (a) filamentous alga lacking flagellated reproductive stages (b) membranous alga producing zoospores (c) filamentous alga with flagellated reproductive stages (d) non-motile colonial alga lacking zoospores.
Last Answer : (c) filamentous alga with flagellated reproductive stages
Description : Isogamous condition with non-flagellated gametes is found in (a) Volvox (b) Fucus (c) Chlamydomonas (d) Spirogyra.
Last Answer : (d) Spirogyra.
Description : Which one of the following shows isogamy with non-flagellated gametes? (a) Sargassum (b) Ectocarpus (c) Ulothrix (d) Spirogyra
Last Answer : (d) Spirogyra
Description : Male gametes are flagellated in (a) Ectocarpus (b) Spirogyra (c) Polysiphonia (d) Anabaena
Last Answer : (a) Ectocarpus
Description : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous tubules lined with male germ cells and sertoli ce
Last Answer : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous ... . If both Assertion & Reason are False.
Description : In the illustration, the component labeled 'G' _________. EL-0031 A. is lined with cardboard to maintain a moisture (electrolyte) barrier between cells B. is a one piece container with compartments for each individual cell C. must be UL approved for shipboard use D. can only contain one cell
Last Answer : Answer: B
Description : Body cavity is the cavity present between body wall and gut wall. In some animals the body cavity is not lined by mesoderm. Such animals are called
Last Answer : Body cavity is the cavity present between body wall and gut wall. In some animals the ... Acoelomate B. Pseudocoelomate C. Coelomate D. Haemocoelomate
Description : Do any of you more seasoned, wise people remember getting lined up like a herd of cattle in your elementary school hallway, and the nurse going down the line popping your upper arm with a needle gun that had 5 needles in one, and what that was for?
Last Answer : I’m just wondering if you’re talking about this
Description : If you have a job lined up, is it better to quit or get laid off from existing job?
Last Answer : You will only get severence if your company is laying you off and offering you severence. You won’t get it because you are moving on to another job. So I guess I’m confused as to the situation you are asking about.
Description : How many tennis balls, lined up one after the other, would it take to circle the earth at the Equator?
Last Answer : The beauty of wolfram. (Except for the fail of URLs sometimes.) http://goo.gl/JLaFf
Description : Why can't I used lined notecards to write thank you notes?
Last Answer : I don’t see an issue with writing on note pads with a line. I would just be tickled to get a thank you note at all for a gift I had given for graduation.
Description : Are you concerned about canned goods being lined with BPA?
Last Answer : Not even a little bit.
Description : What's a good method for making sure the ends of your tie are lined up perfectly?
Last Answer : Scissors
Description : I'd like to move out of the USA. How can I go about doing that if I don't have a specific job lined up?
Last Answer : Learn a trade, or a skill your chosen country is in low supply of.
Description : Did you know that if all the people in China lined up and walked passed you in single file, the line would never end due to the rate of reproduction there?
Last Answer : Did you Google that?
Description : What are the best portable reusable water bottles - glass, stainless, glass lined stainless?
Last Answer : answer:If you want a good water bottle, go with a Nalgene. Originally used in lab-ware (because they are chemically neutral), the Nalgnene company has expanded into water bottles. They are virtually indestructible! The typical size is one litre, and they run for about $8
Description : How do I remove overgrown pickerel weed from a lined pond?
Last Answer : You need to pull that out by hand very carefully.
Description : You and nine other individuals have been captured by super intelligent alien overlords. The aliens think humans look quite tasty, but their civilization forbids eating highly logical and cooperative beings. ... , each of you must guess the color of your hat starting with the perso -Riddles
Last Answer : Let's see how it would play out if the hats were distributed like this. The tallest captive sees three black hats in front of him, so he says 'black,' telling everyone else he sees an odd ... go. It looks like these aliens will have to go hungry, or find some less logical organisms to abduct.
Description : Marble walls as white as milk, lined with skin as soft as silk, in a fountain crystal clear, a golden apple will appear, there is no key to this stronghold, yet theives break in and steal the gold. What is it? -Riddles
Last Answer : An egg.
Description : There are 100 light bulbs lined up in a row in a long room. Each bulb has its own switch and is currently switched off. The room has an entry door and an exit door. There are 100 people ... And how many of the light bulbs are illuminated after the 100th person has passed through the room? -Riddles
Last Answer : First think who will operate each bulb, obviously person #2 will do all the even numbers, and say person #10 will operate all the bulbs that end in a zero. So who would operate for example bulb 48: Persons numbered: 1 & 48 ... 100 (1, 4, 9, 16, 25, 36, 49, 64, 81 & 100) hence 10 bulbs remain on.
Description : Soldiers line up spaced with pride, Two long rows lined side by side. One sole unit can decide, If the rows will unite or divide. Tell me, tell me, scream it out. What's the thing I talk about? -Riddles
Last Answer : A zipper.
Description : Do the "Lightly Lined" bras at Aerie have underwire?
Last Answer : Need Answer
Description : Assertion `:-` Proximal convoluted tubule is lined by brush-bordered cuboidal epithelium. Reason `:-` PCT is main site of selective reabsorption of us
Last Answer : Assertion `:-` Proximal convoluted tubule is lined by brush-bordered cuboidal epithelium. Reason `:-` ... D. If both Assertion & Reason are false.
Description : Assertion `:-` In PCT all of the essential nutrient and 70-80 percent of electrolytes and water are reabsorbed. Reason `:-` PCT is lined by simple cub
Last Answer : Assertion `:-` In PCT all of the essential nutrient and 70-80 percent of electrolytes and water are ... . D. If both Assertion & Reason are false.
Description : Pulp cavity of a tooth is lined by
Last Answer : Pulp cavity of a tooth is lined by A. Odontoblast B. Chondroblast C. Osteoblast D. Amyloblast