A high regeneration capacity is present in
(1) Planaria
(2) Ancylostoma
(3) Sepia
(4) Sea cucumber
Digestive system consists of a mouth and anus in which animals
(1) Ancylostoma
(2) Wuchereria
(3) Adamsia
(4) Both (1) and (2)
Limbs are present in
(1) Osteichthyes
(2) Chondrichthyes
(3) Reptiles
(4) urochordates
In which of these examples are the members exclusively chondrichthyes
1. | Scoliodon, Pristis, Labeo, Betta |
2. | Scoliodon, Pristis, Betta, Trygon |
3. | Scoliodon, Trygon, Pristis, Carcharodon |
4. | Scoliodon, labeo, Carcharodon, Pristis |
Which of the following animal has a bony endoskeleton?
(1) Exocoetus
(2) Clarias
(3) Pristis
(4) both (1) and (2)
Assertion : | Claspers of cartilage fishes are analogous to penis of human male. |
Reason : | Both act as copulatory organs and transfer the sperms into female. |
Which of the following statement/s about chondrichthyes are incorrect?
1) | Notochord is persistent throughout life |
2) | Endoskeleton is made up of bones |
3) | Operculum present |
4) | Skin is covered by placoid scales |
1. | All of the above |
2. | None of the above |
3. | 1 and 4 are incorrect |
4. | 2 and 3 are incorrect |
The common name of Calotes versicolor is
1. Garden lizard
2. Tree lizard
3. Wall lizard
4. Monitor lizard
Dry, cornified skin along with epidermal scales or scutes is found in
(1) Tortoise
(2) Hyla
(3) Bufo
(4) All of the above
Given below are two statements:
Assertion (A): | Starfish moves through crawling. |
Reason (R): | Starfish utilise a flow of water over the surface, for movement. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |