Torsion of visceral mass is seen in animals belonging to the class
Cephalopoda
Scaphopoda
Amphineura
Gastropoda
D.
Gastropoda
Animals of class-Gastropoda of phylum-Mollusca undergo twisting of torsion of the visceral mass during development, leading to the conversion of the symmetrical embryo into an asymmetrical adult.
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 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
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
Which among these is the correct combination of aquatic mammals?
Seals, Dolphins, Sharks
Dolphins, Seals, Trygon
Whales, Dolphins, Seals
Whales, Dolphins, Seals
