15. Chondrichthyes
Animal kingdom

262275 Statement (S): Fishes belonging to "Chondrichthyes" have heterocercal caudal fin.
Reason (R): These fishes have an air bladder that acts as a hydrostatic organ.

1 Both (S) and (R) are correct and (R) is the correct explanation to $(\mathrm{S})$
2 Both (S) and (R) are correct but (R) is not the correct explanation to (S)
3 (S) is correct but (R) is wrong
4 (S) is wrong but (R) is correct
Animal kingdom

262255 Study the following and pick up the correct combinatins.

S.N.Scientific
name
Common
name
Character
------------
IHippocam pusSea horseFemale
has a
brood
pouch
IITrygonSting rayPossesses
poison
sting
IIITorpedoElectric rayVentral muscles modified into electric organs
IVExocoetusFlying fishContains air
bladder
Options:

1 I, II
2 II, IV
3 I, III
4 III, IV
Animal kingdom

262257 Assertion (A) : Cartilaginous fishes are viviparous
Reason (R) : Males of cartilaginous fishes have claspers to facilitate internal fertilization

1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ are correct but $\mathrm{R}$ is not the correct explanation of A
3 $\mathrm{A}$ is true but $\mathrm{R}$ is wrong
4 A is wrong but $\mathrm{R}$ is true
Animal kingdom

262260 Assertion (A): Heart of fishes is called branchial heart
Reason (R): It receives deoxygenated blood from body parts
The correct option among the following is

1 (A) is true, (R) is true but (R) is the correct explanation for (A)
2 (A) is true, (R) is true but (R) is the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Animal kingdom

262262 Match the following columns and select the correct option.

Column-IColumn-II
:---:---:---:---
(A)6-15 pairs of
gill slits
(i)Trygon
(B)Heterocercal
caudal fin
(ii)Cyclostomes
(C)Air Bladder(iii)Chondrichthye
s
(D)Poison sting(iv)Osteichthyes

1 A - iii, B - iv, C - i, D - ii
2 A - iv, B - ii, C - iii, D - i
3 A - i, B - iv, C - iii, D - ii
4 A - ii, B - iii, C - iv, D - i
Animal kingdom

262275 Statement (S): Fishes belonging to "Chondrichthyes" have heterocercal caudal fin.
Reason (R): These fishes have an air bladder that acts as a hydrostatic organ.

1 Both (S) and (R) are correct and (R) is the correct explanation to $(\mathrm{S})$
2 Both (S) and (R) are correct but (R) is not the correct explanation to (S)
3 (S) is correct but (R) is wrong
4 (S) is wrong but (R) is correct
Animal kingdom

262255 Study the following and pick up the correct combinatins.

S.N.Scientific
name
Common
name
Character
------------
IHippocam pusSea horseFemale
has a
brood
pouch
IITrygonSting rayPossesses
poison
sting
IIITorpedoElectric rayVentral muscles modified into electric organs
IVExocoetusFlying fishContains air
bladder
Options:

1 I, II
2 II, IV
3 I, III
4 III, IV
Animal kingdom

262257 Assertion (A) : Cartilaginous fishes are viviparous
Reason (R) : Males of cartilaginous fishes have claspers to facilitate internal fertilization

1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ are correct but $\mathrm{R}$ is not the correct explanation of A
3 $\mathrm{A}$ is true but $\mathrm{R}$ is wrong
4 A is wrong but $\mathrm{R}$ is true
Animal kingdom

262260 Assertion (A): Heart of fishes is called branchial heart
Reason (R): It receives deoxygenated blood from body parts
The correct option among the following is

1 (A) is true, (R) is true but (R) is the correct explanation for (A)
2 (A) is true, (R) is true but (R) is the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Animal kingdom

262262 Match the following columns and select the correct option.

Column-IColumn-II
:---:---:---:---
(A)6-15 pairs of
gill slits
(i)Trygon
(B)Heterocercal
caudal fin
(ii)Cyclostomes
(C)Air Bladder(iii)Chondrichthye
s
(D)Poison sting(iv)Osteichthyes

1 A - iii, B - iv, C - i, D - ii
2 A - iv, B - ii, C - iii, D - i
3 A - i, B - iv, C - iii, D - ii
4 A - ii, B - iii, C - iv, D - i
Animal kingdom

262275 Statement (S): Fishes belonging to "Chondrichthyes" have heterocercal caudal fin.
Reason (R): These fishes have an air bladder that acts as a hydrostatic organ.

1 Both (S) and (R) are correct and (R) is the correct explanation to $(\mathrm{S})$
2 Both (S) and (R) are correct but (R) is not the correct explanation to (S)
3 (S) is correct but (R) is wrong
4 (S) is wrong but (R) is correct
Animal kingdom

262255 Study the following and pick up the correct combinatins.

S.N.Scientific
name
Common
name
Character
------------
IHippocam pusSea horseFemale
has a
brood
pouch
IITrygonSting rayPossesses
poison
sting
IIITorpedoElectric rayVentral muscles modified into electric organs
IVExocoetusFlying fishContains air
bladder
Options:

1 I, II
2 II, IV
3 I, III
4 III, IV
Animal kingdom

262257 Assertion (A) : Cartilaginous fishes are viviparous
Reason (R) : Males of cartilaginous fishes have claspers to facilitate internal fertilization

1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ are correct but $\mathrm{R}$ is not the correct explanation of A
3 $\mathrm{A}$ is true but $\mathrm{R}$ is wrong
4 A is wrong but $\mathrm{R}$ is true
Animal kingdom

262260 Assertion (A): Heart of fishes is called branchial heart
Reason (R): It receives deoxygenated blood from body parts
The correct option among the following is

1 (A) is true, (R) is true but (R) is the correct explanation for (A)
2 (A) is true, (R) is true but (R) is the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Animal kingdom

262262 Match the following columns and select the correct option.

Column-IColumn-II
:---:---:---:---
(A)6-15 pairs of
gill slits
(i)Trygon
(B)Heterocercal
caudal fin
(ii)Cyclostomes
(C)Air Bladder(iii)Chondrichthye
s
(D)Poison sting(iv)Osteichthyes

1 A - iii, B - iv, C - i, D - ii
2 A - iv, B - ii, C - iii, D - i
3 A - i, B - iv, C - iii, D - ii
4 A - ii, B - iii, C - iv, D - i
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Animal kingdom

262275 Statement (S): Fishes belonging to "Chondrichthyes" have heterocercal caudal fin.
Reason (R): These fishes have an air bladder that acts as a hydrostatic organ.

1 Both (S) and (R) are correct and (R) is the correct explanation to $(\mathrm{S})$
2 Both (S) and (R) are correct but (R) is not the correct explanation to (S)
3 (S) is correct but (R) is wrong
4 (S) is wrong but (R) is correct
Animal kingdom

262255 Study the following and pick up the correct combinatins.

S.N.Scientific
name
Common
name
Character
------------
IHippocam pusSea horseFemale
has a
brood
pouch
IITrygonSting rayPossesses
poison
sting
IIITorpedoElectric rayVentral muscles modified into electric organs
IVExocoetusFlying fishContains air
bladder
Options:

1 I, II
2 II, IV
3 I, III
4 III, IV
Animal kingdom

262257 Assertion (A) : Cartilaginous fishes are viviparous
Reason (R) : Males of cartilaginous fishes have claspers to facilitate internal fertilization

1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ are correct but $\mathrm{R}$ is not the correct explanation of A
3 $\mathrm{A}$ is true but $\mathrm{R}$ is wrong
4 A is wrong but $\mathrm{R}$ is true
Animal kingdom

262260 Assertion (A): Heart of fishes is called branchial heart
Reason (R): It receives deoxygenated blood from body parts
The correct option among the following is

1 (A) is true, (R) is true but (R) is the correct explanation for (A)
2 (A) is true, (R) is true but (R) is the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Animal kingdom

262262 Match the following columns and select the correct option.

Column-IColumn-II
:---:---:---:---
(A)6-15 pairs of
gill slits
(i)Trygon
(B)Heterocercal
caudal fin
(ii)Cyclostomes
(C)Air Bladder(iii)Chondrichthye
s
(D)Poison sting(iv)Osteichthyes

1 A - iii, B - iv, C - i, D - ii
2 A - iv, B - ii, C - iii, D - i
3 A - i, B - iv, C - iii, D - ii
4 A - ii, B - iii, C - iv, D - i
Animal kingdom

262275 Statement (S): Fishes belonging to "Chondrichthyes" have heterocercal caudal fin.
Reason (R): These fishes have an air bladder that acts as a hydrostatic organ.

1 Both (S) and (R) are correct and (R) is the correct explanation to $(\mathrm{S})$
2 Both (S) and (R) are correct but (R) is not the correct explanation to (S)
3 (S) is correct but (R) is wrong
4 (S) is wrong but (R) is correct
Animal kingdom

262255 Study the following and pick up the correct combinatins.

S.N.Scientific
name
Common
name
Character
------------
IHippocam pusSea horseFemale
has a
brood
pouch
IITrygonSting rayPossesses
poison
sting
IIITorpedoElectric rayVentral muscles modified into electric organs
IVExocoetusFlying fishContains air
bladder
Options:

1 I, II
2 II, IV
3 I, III
4 III, IV
Animal kingdom

262257 Assertion (A) : Cartilaginous fishes are viviparous
Reason (R) : Males of cartilaginous fishes have claspers to facilitate internal fertilization

1 Both $\mathrm{A}$ and $\mathrm{R}$ are correct and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
2 Both $\mathrm{A}$ and $\mathrm{R}$ are correct but $\mathrm{R}$ is not the correct explanation of A
3 $\mathrm{A}$ is true but $\mathrm{R}$ is wrong
4 A is wrong but $\mathrm{R}$ is true
Animal kingdom

262260 Assertion (A): Heart of fishes is called branchial heart
Reason (R): It receives deoxygenated blood from body parts
The correct option among the following is

1 (A) is true, (R) is true but (R) is the correct explanation for (A)
2 (A) is true, (R) is true but (R) is the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Animal kingdom

262262 Match the following columns and select the correct option.

Column-IColumn-II
:---:---:---:---
(A)6-15 pairs of
gill slits
(i)Trygon
(B)Heterocercal
caudal fin
(ii)Cyclostomes
(C)Air Bladder(iii)Chondrichthye
s
(D)Poison sting(iv)Osteichthyes

1 A - iii, B - iv, C - i, D - ii
2 A - iv, B - ii, C - iii, D - i
3 A - i, B - iv, C - iii, D - ii
4 A - ii, B - iii, C - iv, D - i