Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):
In honey bee population, sons do not have fathers but have grandfathers.
Reason (R):
Haploidy in drones of honey bee is due to parthenogenesis while fertilisation results into female bees.
In the light of the above statements, choose the correct answer from the options given below:
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.
(A) is False but (R) is True.
Subtopic: Sex Determination |
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From NCERT
NEET - 2024
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A vernier calipers has \(1~\text{mm}\) marks on the main scale. It has \(20\) equal divisions on the vernier scale which match with \(16\) main scale divisions. The least count of this vernier calipers is:
1. \(0.02~\text{mm}\)
2. \(0.05~\text{mm}\)
3. \(0.10~\text{mm}\)
4. \(0.20~\text{mm}\)
1. \(0.02~\text{mm}\)
2. \(0.05~\text{mm}\)
3. \(0.10~\text{mm}\)
4. \(0.20~\text{mm}\)
Subtopic: Measurement & Measuring Devices |
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From NCERT
NEET - 2024
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Which of the following is not a selectable marker of cloning vectors?
1. Ampicillin
2. Metformin
3. Chloramphenicol
4. Tetracycline
1. Ampicillin
2. Metformin
3. Chloramphenicol
4. Tetracycline
Subtopic: Cloning Vector |
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NEET - 2024
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In standard ECG diagram, the P-wave represents:
1. Depolarisation of the atria
2. Repolarisation of the ventricle
3. Depolarisation of the ventricle
4. End of systole
1. Depolarisation of the atria
2. Repolarisation of the ventricle
3. Depolarisation of the ventricle
4. End of systole
Subtopic: ECG & Coronary Artery Disease |
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From NCERT
NEET - 2024
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Object \(A\) has half the kinetic energy as that of object \(B.\) The object \(B\) has half the mass as that of the object \(A.\) The object \(A\) speeds up by \(1~\text{ms}^{-1}\) and then has the same kinetic energy as that of object \(B.\) The initial speed of object of object \(A\) is nearly (Take \(\sqrt2\cong1.4\)):
1. \(0.5~\text{ms}^{-1}\)
2. \(1~\text{ms}^{-1}\)
3. \(2.5~\text{ms}^{-1}\)
4. \(4.8~\text{ms}^{-1}\)
1. \(0.5~\text{ms}^{-1}\)
2. \(1~\text{ms}^{-1}\)
3. \(2.5~\text{ms}^{-1}\)
4. \(4.8~\text{ms}^{-1}\)
Subtopic: Work Energy Theorem |
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NEET - 2024
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An object falls freely from height \(h\) above the ground. It travels \(\dfrac{5}{9}h\) in the last \(1~\text{s}\). Then height \(h\) is:
(Given \(g =10~\text{ms}^{-2}\))
1. \(5~\text{m}\)
2. \(25~\text{m}\)
3. \(45~\text{m}\)
4. \(58~\text{m}\)
(Given \(g =10~\text{ms}^{-2}\))
1. \(5~\text{m}\)
2. \(25~\text{m}\)
3. \(45~\text{m}\)
4. \(58~\text{m}\)
Subtopic: Uniformly Accelerated Motion |
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NEET - 2024
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Identify the incorrect statement:
| 1. | The oxidation state and coordination number (or covalency) of \(\mathrm{Al}\) in\( \left[\mathrm{AlCl}\left(\mathrm{H}_2 \mathrm{O}\right)_5\right]^{2+} \) are +3 and 6, respectively. |
| 2. | \(\mathrm{Na}_2 \mathrm{O}\) is a basic oxide and \(\mathrm{Cl}_2 \mathrm{O}_7\) is an acidic oxide |
| 3. | The following four species are called isoelectronic species: \( \mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+} \mathrm{and}~ \mathrm{Mg}^{2+}\) |
| 4. | Among the four species \(\mathrm{Mg}, \mathrm{Al}, \mathrm{Mg}^{2+}\) and \(\mathrm{A l^{3+},}\) the smallest one is \(\mathrm{Al}.\) |
Subtopic: Ionization Energy (IE) |
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From NCERT
NEET - 2024
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Which of the following is not the characteristic feature of genetic code?
| 1. | The codon is triplet |
| 2. | The code is nearly universal |
| 3. | The code has punctuations |
| 4. | Some amino acids are coded by more than one codon, hence the code is degenerate |
Subtopic: Genetic Code |
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NEET - 2024
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The length of a magnetized iron bar is \(L\) and its magnetic moment is \(M.\) When this bar is bent to form a semicircle its magnetic moment is:
1. \(M\)
2. \(\large\frac{M\pi}{2}\)
3. \(\large\frac{M}{2\pi}\)
4. \(\large\frac{2M}{\pi}\)
1. \(M\)
2. \(\large\frac{M\pi}{2}\)
3. \(\large\frac{M}{2\pi}\)
4. \(\large\frac{2M}{\pi}\)
Subtopic: Bar Magnet |
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NEET - 2024
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Name the hormone(s) not secreted by placenta.
A. Estrogens
B. Progestogens
C. Relaxin and Inhibin
D. hCG
E. hPL
Choose the correct answer from the options given below:
1. D and E only
2. C only
3. B only
4. A and C only
A. Estrogens
B. Progestogens
C. Relaxin and Inhibin
D. hCG
E. hPL
Choose the correct answer from the options given below:
1. D and E only
2. C only
3. B only
4. A and C only
Subtopic: Embryonic Development till Gastrulation |
67%
NEET - 2024
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