Which of the following marine fishes are considered direct descendents of fresh water ancestors?

Related Mcqs:

1. Marine fish can keep their internal environment hypertonic with respect to the surrounding salty water by retaining.

   A. Excessive urea which will increase their internal solute concentration and prevent body shrinkage in hypertonic environment B. Trimethyl alanine C. Ammonia D. Trimethylamine oxide...

2. An unbroken series of species arranged in ancestors to descendent sequence with each later species having evolved from one that immediately preceded it is called?

   A. Biome B. Phyletic lineage C. Community D. Population...

3. Which of the following fishes contained lungs?

   A. Lamprey B. Perch C. Plaice D. Dipnoi...

4. Which of the following fishes excrete large volume of diluted urine?

   A. Bony Marine fishes B. Fresh water fishes C. Both depending upon the surrounding water D. None of these...

5. Deoxygenated blood first enters in _________ part in fishes?

   A. Sinus venosus B. Right atrium C. Left atrium D. Conus arteriosus...

6. The most important group of producers in marine ecosystem is of__________?

   A. Diatoms B. Euglenoids C. Dinoflagellates D. Brown algae...

7. Exoskeleton of a marine snail is composed of________________?

   A. CaPO4 B. CaCO3 C. CaSO4 D. SiO2...

8. Fishes, most of the invertebrates and amphibians are examples of ________ animals?

   A. Endotherms B. Ectotherms C. Heterotherms D. Homeotherms...

9. Most of the marine invertebrates are__________?

   A. Osmoconformers B. Osmoregulators C. Both depend upon the concentration of sea water D. None of these...

10. Scolidon or dog fish belong to the group of fishes called__________?

    A. Cartilaginous fishes B. Bony fishes C. Running fishes D. Jawless fishes...