Sponges are simple animals which are ____________________ ?Question 7Select one:a.Totipotentb.Diploblasticc.both totipotent and diploblasticd.Triploblastic

Sponges …a. have larvae which are motile and move via the motion of cilia.b. are the simplest diploblastic animals.c. have a nerve net but not a central nervous system.d. have feeding cells called dinoflagellates.e. reproduce asexually.6. Healthy corals are brightly coloured because they …a. secrete colourful pigments to attract mates.b. host symbionts with colourful photosynthetic pigments.c. build their skeletons from colourful minerals.d. secrete colourful pigments to protect themselves from ultraviolet light.e. secrete colorful pigments to attract prey species.7. Which of the following is a major disadvantage of exoskeletons?a. Exoskeletons can be easily punctured.b. An exoskeleton provides some support.c. An exoskeleton grows faster than the animal.d. An exoskeleton does not grow as the animal grows.e. An exoskeleton tastes good to predators.8. Which of the following combinations correctly matches a phylum to its description?a. Echinodermata – bilateral symmetry as a larva, water vascular systemb. Nematoda – segmented worms, closed circulatory systemc. Cnidaria – flatworms, gastrovascular cavity, acoelomated. Platyhelminthes – radial symmetry, polyp and medusa body formse. Arthropoda – nonsegmented body, hard exoskeleton, and visceral mass9. Which of the following is a characteristic of all chordates at some point during their lifecycle?a. Jawsb. Post-anal tailc. Four-chambered heartd. Vertebraee. Limbs

Which of the following is NOT a characteristic of sponges (Phyla Calcarea and Silicea)?a) They lack true tissues and organs.b) They are sedentary suspension feeders.c) They are diploblastic.d) They contain flagellated collar cells called choanocytes

Sponges are most accurately described asa) marine predators.b) marine filter feeders.c) freshwater scavengers.d) aquatic filter feeders

Most sponges areMultiple choice question.pentaradial.bilateral.radial.asymmetrical.

Select all the characteristics that distinguish sponges from other animals.Multiple select question.asymmetrical body in some individualsdirect developmentexoskeletonno true tissues