Q3 of 525 Page 239

(a) To which group this organism belongs?

(b) Label the parts marked 1 to 7.


(c) What is the function of part marked 7?


(a) It is a bony fish which belongs to class Pisces.

(b) 1. Operculum; 2. Dorsal fin; 3. Pectoral fin; 4. Pelvic fin; 5. Anal fin; 6. Caudal fin; 7. Lateral line.


(c) The lateral line is a sensory system in fish that allows them to identify position of objects and movement in the surrounding water.


More from this chapter

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1

Identify the organism in the following figure


(b) Label the parts numbers 1 to 4.


(c) Name the phylum in which notochord is present.


(d) Name the subphylum in which notochord is present throughout life.

 2

(a) Identify the organism.

(b) Label the part a1 and 2.


(c) Write the mode the nutrition in this animal.


 1

Wins are absent in bed bug even then it is considered an insect. Why?

 2

Why are protozoa are regarded as early animals?