Which among these is the correct combination of aquatic mammals?
Seals, Dolphins, Sharks
Dolphins, Seals, Trygon
Whales, Dolphins, Seals
Whales, Dolphins, Seals
C.
Whales, Dolphins, Seals
Sharks and Trygon (sting ray) are the members of chondrichthyes (cartilaginous fish) while whale, and Seals are aquatic mammals belong to class mammalia
Which of the following features is used to identify a male cockroach from a female cockroach?
Presence of a boat-shaped sternum on the 9th abdominal segment
Presence of caudal styles
Presence of anal cerci
Forewings with darker tegmina
An important characteristic that Hemichordates share with Chordates is
Absence of notochord
Ventral tubular nerve cord
Pharynx with gill slits
Pharynx with gill slits
Match the following columns.
| Column I | Column II | ||
| A. | Pinocytosis | 1. | Euglena Gracillis |
| B. | Hotozoic | 2. | Paramecium |
| C. | Parasitic | 3. | Amoeba Proteus |
| D. | Mixotrophic | 4. | Monocystis |
| A | B | C | D |
| 3 | 2 | 4 | 1 |
| A | B | C | D |
| 2 | 3 | 4 | 1 |
| A | B | C | D |
| 4 | 3 | 1 | 2 |
| A | B | C | D |
| 1 | 4 | 2 | 3 |
Which of the given option is correct regarding the statements?
Statement I: Cephalochordata bears notochord all along the body throughout life.
Statements II: Urochordate bears vertebral column only in the tail region throughout the life.
I wrong, II correct
I correct, II wrong
Both I and II are wrong
Both are correct
Torsion of visceral mass is seen in animals belonging to the class
Cephalopoda
Scaphopoda
Amphineura
Gastropoda
