based on this evidence? Syconoid sponges were derived from leuconoid ancestors. Leuconoid sponges were derived from asconoid ancestors. Syconoid sponges were derived from syconoid ancestors. Asconoid sponges were derived from syconoid ancestors. Leuconoid sponges were derived from syconoid ancestors. The distinction between phagotrophs (or holozoic feeders) and osmotrophs (or saprozoi a difference between producing your own food versus using the chemical bonds in food molecules made diffusion of food across the membrane versus engulfing food in a vacuole ingesting visible particles or organisms versus ingesting dissolved substances, some from dead organisms eating living and eating dead oranic material. direct transport versus indirect transport of food molecules The most likely mechanism for removing excess water by contractile vacuoles is a proton pump that also pulls water into the vacuole. an ampulla that forms suction. simple osmosis of water across the cell membrane. reverse osmosis. differential fluid pressure. The large posterior attachment organ of the adult monogenean is a/an opisthaptor. Cirrus rhabdite. pilidium. hydatid Nematocysts are first found in sponges, most highly developed in cnidarians, but still found as remnants in some higher groups. formed and used only by Cnidaria although a few other organisms may \"steal\" them. widespread among the animal kingdom but first developed by Cnidarians. actually free-living symbionts that are most usually taken up by cnidarians, as are many None of the choices is correct The function of the siphonoglyph is to maintain balance or orientation. reproduction to form water currents into the gastrovascular cavity. to aid in swimming. to sting the prey. Solution 9.The correct answer is:C) ingesting visible particles or organisms versus ingesting dissolved substances some from dead organisms. Reason:Phagotrophs ingest food particles by engulfing them while osmotrophs ingest food matter that is soluble. 10.The correct answer is: A) A proton pump that also pulls water into the vacuole. Reason:Presence of proton pump in contractile vacuole brings a difference of ions inside the vacuole as a result of which water is pulled into it via osmosis. 11.The correct answer is: A) opisthaptor Reason:Opisthaptor is the posterior attachment strcuture of the monogenean adult. 12.The correct answer is:B) formed and used only in Cnidaria although a few other organisms may steal them. Reason:Nematocysts are found only in Cnidaria but there are marine gastropods known as Nudibranchs that feed nematocysts of hydrozoids and store them in their dorsal body wall.These stolen nematocysts are known as kleptocnidae. 13.The function of the siphonoglyph is: C) to form water currents into the gastrovascular cavity. Reason: Siphonoglyph transfers water currents to the pharynx and are present at either one or both ends of the mouth of sea anemones..

1. based on this evidence? Syconoid sponges were derived from leuconoid ancestors. Leuconoid
sponges were derived from asconoid ancestors. Syconoid sponges were derived from syconoid
ancestors. Asconoid sponges were derived from syconoid ancestors. Leuconoid sponges were
derived from syconoid ancestors. The distinction between phagotrophs (or holozoic feeders) and
osmotrophs (or saprozoi a difference between producing your own food versus using the
chemical bonds in food molecules made diffusion of food across the membrane versus engulfing
food in a vacuole ingesting visible particles or organisms versus ingesting dissolved substances,
some from dead organisms eating living and eating dead oranic material. direct transport versus
indirect transport of food molecules The most likely mechanism for removing excess water by
contractile vacuoles is a proton pump that also pulls water into the vacuole. an ampulla that
forms suction. simple osmosis of water across the cell membrane. reverse osmosis. differential
fluid pressure. The large posterior attachment organ of the adult monogenean is a/an
opisthaptor. Cirrus rhabdite. pilidium. hydatid Nematocysts are first found in sponges, most
highly developed in cnidarians, but still found as remnants in some higher groups. formed and
used only by Cnidaria although a few other organisms may "steal" them. widespread among
the animal kingdom but first developed by Cnidarians. actually free-living symbionts that are
most usually taken up by cnidarians, as are many None of the choices is correct The function of
the siphonoglyph is to maintain balance or orientation. reproduction to form water currents into
the gastrovascular cavity. to aid in swimming. to sting the prey.
Solution
9.The correct answer is:C) ingesting visible particles or organisms versus ingesting dissolved
substances some from dead organisms.
Reason:Phagotrophs ingest food particles by engulfing them while osmotrophs ingest food
matter that is soluble.
10.The correct answer is: A) A proton pump that also pulls water into the vacuole.
Reason:Presence of proton pump in contractile vacuole brings a difference of ions inside the
vacuole as a result of which water is pulled into it via osmosis.
11.The correct answer is: A) opisthaptor
Reason:Opisthaptor is the posterior attachment strcuture of the monogenean adult.
12.The correct answer is:B) formed and used only in Cnidaria although a few other organisms
may steal them.
Reason:Nematocysts are found only in Cnidaria but there are marine gastropods known as
Nudibranchs that feed nematocysts of hydrozoids and store them in their dorsal body wall.These
stolen nematocysts are known as kleptocnidae.

2. 13.The function of the siphonoglyph is: C) to form water currents into the gastrovascular cavity.
Reason: Siphonoglyph transfers water currents to the pharynx and are present at either one or
both ends of the mouth of sea anemones.