332365
Consider following features: (a) Internal fertilization (b) A pair of jaws (c) Mostly viviparous Select the correct option of animal groups which possess all the above characteristics.
1 Chondrichthyes and Osteichthyes
2 Reptilia and Mammalia
3 Amphibia and Mammalia
4 Chondrichthyes and Mammalia
Explanation:
Both Chondrichthyes and Mammalia belong to Gnathostomata (have jaws). They are mostly viviparous and exhibit internal fertilisation. Osteichthyes, amphibians and reptiles are mostly oviparous.
BIOXI04: ANIMAL KINGDOM
332366
Which is commonly called as a Saw fish?
1 Pristis
2 Sphyrna
3 Exocoetus
4 Trygon
Explanation:
The jaws of Pristis are saw-like, hence the name sawfish.
BIOXI04: ANIMAL KINGDOM
332367
Select the correct statement.
1 Leech has incomplete gut
2 Prawn has statocysts
3 Snail chitinous shell
4 Shark has cycloid scales
Explanation:
Statocysts are the balancing organs present in some arthropods, e.g., prawn. Leech has a complete gut. Molluscs (e.g. snail) have a calcareous shell. Scales of cartilaginous fishes (e.g. shark) are placoid.
BIOXI04: ANIMAL KINGDOM
332368
Chondrichthyes is characterised by
1 Placoid scales
2 Ventral mouth
3 Ventral mouth and ctenoid scales
4 Both (1) and (2)
Explanation:
Chondrichthyes is unique for having placoid scales and a ventral mouth.
332365
Consider following features: (a) Internal fertilization (b) A pair of jaws (c) Mostly viviparous Select the correct option of animal groups which possess all the above characteristics.
1 Chondrichthyes and Osteichthyes
2 Reptilia and Mammalia
3 Amphibia and Mammalia
4 Chondrichthyes and Mammalia
Explanation:
Both Chondrichthyes and Mammalia belong to Gnathostomata (have jaws). They are mostly viviparous and exhibit internal fertilisation. Osteichthyes, amphibians and reptiles are mostly oviparous.
BIOXI04: ANIMAL KINGDOM
332366
Which is commonly called as a Saw fish?
1 Pristis
2 Sphyrna
3 Exocoetus
4 Trygon
Explanation:
The jaws of Pristis are saw-like, hence the name sawfish.
BIOXI04: ANIMAL KINGDOM
332367
Select the correct statement.
1 Leech has incomplete gut
2 Prawn has statocysts
3 Snail chitinous shell
4 Shark has cycloid scales
Explanation:
Statocysts are the balancing organs present in some arthropods, e.g., prawn. Leech has a complete gut. Molluscs (e.g. snail) have a calcareous shell. Scales of cartilaginous fishes (e.g. shark) are placoid.
BIOXI04: ANIMAL KINGDOM
332368
Chondrichthyes is characterised by
1 Placoid scales
2 Ventral mouth
3 Ventral mouth and ctenoid scales
4 Both (1) and (2)
Explanation:
Chondrichthyes is unique for having placoid scales and a ventral mouth.
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BIOXI04: ANIMAL KINGDOM
332365
Consider following features: (a) Internal fertilization (b) A pair of jaws (c) Mostly viviparous Select the correct option of animal groups which possess all the above characteristics.
1 Chondrichthyes and Osteichthyes
2 Reptilia and Mammalia
3 Amphibia and Mammalia
4 Chondrichthyes and Mammalia
Explanation:
Both Chondrichthyes and Mammalia belong to Gnathostomata (have jaws). They are mostly viviparous and exhibit internal fertilisation. Osteichthyes, amphibians and reptiles are mostly oviparous.
BIOXI04: ANIMAL KINGDOM
332366
Which is commonly called as a Saw fish?
1 Pristis
2 Sphyrna
3 Exocoetus
4 Trygon
Explanation:
The jaws of Pristis are saw-like, hence the name sawfish.
BIOXI04: ANIMAL KINGDOM
332367
Select the correct statement.
1 Leech has incomplete gut
2 Prawn has statocysts
3 Snail chitinous shell
4 Shark has cycloid scales
Explanation:
Statocysts are the balancing organs present in some arthropods, e.g., prawn. Leech has a complete gut. Molluscs (e.g. snail) have a calcareous shell. Scales of cartilaginous fishes (e.g. shark) are placoid.
BIOXI04: ANIMAL KINGDOM
332368
Chondrichthyes is characterised by
1 Placoid scales
2 Ventral mouth
3 Ventral mouth and ctenoid scales
4 Both (1) and (2)
Explanation:
Chondrichthyes is unique for having placoid scales and a ventral mouth.
332365
Consider following features: (a) Internal fertilization (b) A pair of jaws (c) Mostly viviparous Select the correct option of animal groups which possess all the above characteristics.
1 Chondrichthyes and Osteichthyes
2 Reptilia and Mammalia
3 Amphibia and Mammalia
4 Chondrichthyes and Mammalia
Explanation:
Both Chondrichthyes and Mammalia belong to Gnathostomata (have jaws). They are mostly viviparous and exhibit internal fertilisation. Osteichthyes, amphibians and reptiles are mostly oviparous.
BIOXI04: ANIMAL KINGDOM
332366
Which is commonly called as a Saw fish?
1 Pristis
2 Sphyrna
3 Exocoetus
4 Trygon
Explanation:
The jaws of Pristis are saw-like, hence the name sawfish.
BIOXI04: ANIMAL KINGDOM
332367
Select the correct statement.
1 Leech has incomplete gut
2 Prawn has statocysts
3 Snail chitinous shell
4 Shark has cycloid scales
Explanation:
Statocysts are the balancing organs present in some arthropods, e.g., prawn. Leech has a complete gut. Molluscs (e.g. snail) have a calcareous shell. Scales of cartilaginous fishes (e.g. shark) are placoid.
BIOXI04: ANIMAL KINGDOM
332368
Chondrichthyes is characterised by
1 Placoid scales
2 Ventral mouth
3 Ventral mouth and ctenoid scales
4 Both (1) and (2)
Explanation:
Chondrichthyes is unique for having placoid scales and a ventral mouth.