A sponge body type consisting of one spinose having many folds is called: ancono
ID: 226487 • Letter: A
Question
A sponge body type consisting of one spinose having many folds is called: anconoid. conoid. leuconid. hexactinellid. demosponge. A sponge body type with many chambers lined with collar cells is called: anconoid. conoid. leuconid. hexactinellid. demosponge. The skeletal elements that give support to a sponge's body are called choanocytes. sponging. spicules. collar cells. phorocytes. Sponges can have skeletons made of all these materials except: silica. calcium carbonate. starch. sponging. protein. Reproduction in sponges includes all except: budding. sexual. fragmentation. cloning. Sponges often compete with other organisms for food. space. light. nutrients. mating. Sponges avoid predators by: seeking sheltered locations. having spicules. producing toxins. both b and c a and b only.Explanation / Answer
Answer 42: b. syconoid (Explained as below)
Ascanoid and syconoid both have a single spongoceol, but the in syconoid, unlike ascanoid, there is increase in surface area due to many folds or finger-like projections.
Answer 43: c. leuconoid (Explained as below)
Leuconoids have many chambers interconnected and lined with collar cells.
Answer 44: c. spicules (Explained as below)
Spicules are the skeleton of sponges.
Answer 45: c. starch (Explained as below)
Spicules are made up of calcium-carbonate or silicon-dioxide. Spongin fibers are a network of protein. So, what is not part of its skeletal body is starch.
Answer 46: d. cloning (Explained as below)
Sponges reproduce sexually by means of the sperm and egg, and asexually by budding and segmentation.
Answer 47: b. space (Explained as below)
Sponges occupy considerable space by spreading rapidly even if attached to one substrate. Thus, compete with other organisms for space.
Answer 48: d. both b and c (Explained as below)
Sponges have a defense mechanism that releases toxins. Physically spicules help as a deterrent to prey.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.