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Conifers (gymnosperms) form endosperm before fertilization — this pre-fertilization endosperm (the female gametophyte tissue) is a key gymnosperm feature. In angiosperms (grasses), endosperm forms after fertilization (triple fusion). Both groups have pollen tubes, xylem tracheids, and seeds from ovules.

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Pharmacokinetics and Pharmacodynamics QUESTION #3850

Question 4266

What is the most reliable pharmacokinetic measurement to demonstrate bioequivalence between two tablet formulations containing the same drug dose?

Disintegration time
Dissolution time
Serum concentration✔️
Rate of excretion

Correct Answer Logic:

Bioequivalence is established by comparing pharmacokinetic parameters ($\text{AUC}$, $C_{\max}$, and $T_{\max}$) derived from serum concentration–time profiles after administration of both formulations.

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Maths QUESTION #4499

Question 4267

What is $\sqrt{144}$?

$12$✔️
$14$
$72$
$10$

Correct Answer Logic:

$12^2 = 144$, so $\sqrt{144} = 12$

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Maths QUESTION #2837

Question 4268

Find the next term in: $2, 3, 5, 8, 13, 21, \_\_\_$

29
33
34✔️
35

Correct Answer Logic:

This is a Fibonacci-type sequence where each term is the sum of the two preceding terms. $13 + 21 = 34$.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3033

Question 4269

Which of the following is an 'Efflorescent' substance?

Citric Acid
Sodium Carbonate decahydrate
Caffeine
All of these✔️

Correct Answer Logic:

Efflorescent substances lose water of crystallization when exposed to dry air.

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Academic/Professional (Social Sciences) QUESTION #6510

Question 4270

Which of the following is an 'Achieved Status'?

Gender
Age
Doctor✔️
Race

Correct Answer Logic:

Achieved status is a social position a person takes on voluntarily that reflects personal ability and effort.

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Nursing QUESTION #9244

Question 4271

A Charge Nurse is caring for a post-cardiac surgery patient. The patient develops cardiac tamponade. Which clinical triad is MOST characteristic?

Hypertension, bradycardia, and widened pulse pressure
Hypotension, muffled heart sounds, and distended neck veins (Beck's Triad)✔️
Tachycardia, hypertension, and pulmonary edema
Fever, pericardial friction rub, and sharp chest pain

Correct Answer Logic:

Correct Answer: B — Beck's Triad

Cardiac Tamponade: Beck's Triad

Hypotension — reduced cardiac output due to compression
Muffled (distant) heart sounds — fluid surrounding the heart dampens sounds
Jugular venous distension (JVD) — elevated venous pressure as blood cannot enter compressed heart

Additional signs:

Pulsus paradoxus $> 10 \text{ mmHg}$: Exaggerated fall in systolic BP during inspiration
Tachycardia (compensatory)
Electrical alternans on ECG (alternating QRS amplitude)
Enlarged cardiac silhouette on CXR ('water bottle' heart)

Treatment: Pericardiocentesis (emergency needle drainage) — nurse must prepare equipment immediately. Do NOT give diuretics (worsens hypovolemia). Volume loading may temporarily support BP.

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Biology QUESTION #7245

Question 4272

Myxomycetes are:

Saprobes or parasites, having mycelia, asexual reproduction by fragmentation, sexual reproduction by fusion of gametes
Slimy mass of multinucleate protoplasm, having pseudopodia-like structures for engulfing food, reproduction through fragmentation or zoospores✔️
Prokaryotic organisms, cellular or acellular, saprobes or autotrophic, reproduce by binary fission
Eukaryotic, single-celled or filamentous, saprobes or autotrophic, asexual reproduction by division of haploid individuals, sexual reproduction by fusion of two cells or their nuclei

Correct Answer Logic:

Myxomycetes (slime moulds) exist as a slimy, multinucleate plasmodium that moves like an amoeba using pseudopodia-like extensions to engulf food particles. They reproduce asexually by fragmentation or zoospores. They are acellular and belong to kingdom Protista.

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Physics QUESTION #1165

Question 4273

At constant pressure and volume, the exact relation between $C_p$ and $C_v$ is:

C_p > C_v
$C_p / C_v > 1$
$C_p - C_v = R$
All of these✔️

Correct Answer Logic:

All three relations are simultaneously true for an ideal gas: (A) $C_p > C_v$ because at constant pressure extra heat is needed to do work against expansion. (B) $C_p/C_v = \gamma > 1$. (C) The Mayer relation: $C_p - C_v = R$ (per mole). So all of these are correct.

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Home Economics QUESTION #6285

Question 4274

What is the 'Opportunity Cost' of a family's decision to buy a car instead of renovating the house?

The value of the house renovation that was given up✔️
The interest paid on the car loan
The maintenance cost of the new car
The price of the car

Correct Answer Logic:

Opportunity cost is the value of the next best alternative foregone when a choice is made.

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Basic Mathematics QUESTION #48

Question 4275 (Select all that apply)

dsdagsadgsdagsad

dgfas✔️
gdsgasd
gsdags✔️
dgfasdweeaw

Correct Answer Logic:

sdgsagasdg

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The Constitution of Pakistan QUESTION #9391

Question 4276

The Supreme Court's appellate jurisdiction under Article 185 after the 27th Amendment is now expressly made subject to Article 175F. What is the primary significance of this subjection?

Supreme Court retains concurrent appellate jurisdiction
Matters involving constitutional questions on High Court Article 199 orders now go to the Federal Constitutional Court under Article 175F, not directly to the Supreme Court✔️
The Supreme Court can no longer hear criminal appeals
Appeals from family courts now go to the FCC

Correct Answer Logic:

Article 185(1) as substituted by the 27th Amendment provides that the Supreme Court's appellate jurisdiction is 'subject to this Article and Article 175F.' Article 175F grants the FCC appellate jurisdiction over High Court orders under Article 199 involving constitutional questions. Article 185(3) now adds a proviso that no appeal shall lie to the Supreme Court in cases where Article 175F applies — creating a clean jurisdictional division.

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Law QUESTION #9532

Question 4277

A Court issues a commission to an Advocate Commissioner to examine a witness who resides outside the Court's local limits. The Commissioner records the evidence but fails to serve a copy of the evidence on the opposite party before submitting the report to Court. The opposite party objects to the use of this evidence. Should the Court exclude the evidence?

Yes; the Court should not act on evidence recorded by a commissioner without affording the opposite party an opportunity to cross-examine and receive a copy; if this opportunity was not given, the evidence is procedurally defective and the opposite party's objection should be sustained unless the defect is cured✔️
Yes; only evidence recorded in open Court is admissible
No; commissioned evidence is always admissible regardless of procedure
No; a commissioner's report is binding on the Court

Correct Answer Logic:

Order XXVI CPC governs commissions. Evidence recorded by a commission must be handled so that each party has the opportunity to appear, examine, cross-examine witnesses, and receive copies of the recorded evidence. Denial of this opportunity renders the evidence procedurally defective. The Court should either cure the defect or exclude the evidence in the interests of natural justice.

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Mathematics QUESTION #6959

Question 4278

Suppose $x, y, z$ are in arithmetic progression (A.P.) and $\tan^{-1}x,\ \tan^{-1}y,\ \tan^{-1}z$ are also in A.P. Then:

$x=y=z$✔️
$2x=3y=6z$
$6x=3y=2z$
$6x=4y=3z$

Correct Answer Logic:

If $\tan^{-1}x, \tan^{-1}y, \tan^{-1}z$ are in A.P., then $2\tan^{-1}y=\tan^{-1}x+\tan^{-1}z$.

Also $x,y,z$ in A.P. means $2y=x+z$.

From $2\tan^{-1}y=\tan^{-1}x+\tan^{-1}z$: using the addition formula, $\tan(2\tan^{-1}y)=\tan(\tan^{-1}x+\tan^{-1}z)$, i.e., $\dfrac{2y}{1-y^2}=\dfrac{x+z}{1-xz}$.

Substituting $x+z=2y$: $\dfrac{2y}{1-y^2}=\dfrac{2y}{1-xz}$. So $1-y^2=1-xz$, giving $y^2=xz$.

Combined with $x+z=2y$ (A.P.) and $y^2=xz$ (G.P.) $\Rightarrow x=y=z$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3370

Question 4279

'Mesophiles' are bacteria that grow best at:

Freezing temperatures
Human body temperature ($20-45^\circ\text{C}$)✔️
Boiling temperatures
Very acidic $pH$

Correct Answer Logic:

Most human pathogens are mesophiles.

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Chemistry QUESTION #7816

Question 4280

Which sub-shell does not exist?

1p✔️
1s
5d
6f

Correct Answer Logic:

For n=1, l can be 0 only (s orbital). 1p would require l=1, not possible. 1s exists; 5d and 6f exist for higher n.

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