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The best all over questions for 12th ncert biology

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It was all about for class 12th and neet aspirant he.p them to read in one pdf

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Class 12 Most Important
PYQ

,1.In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn

with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born

with weight from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is

taking place?

(1) Directional Selection

(2) Stabilizing Selection

(3) Disruptive Selection

(4) Cyclical Selection

,
, 2.Select the correct sequence for transport of sperm cells in male reproductive system.

(1) Testis - Epididymis - Vasa efferentia - Rete testis - Inguinal canal - Urethra

(2) Seminiferous tubules - Rete testis - Vasa efferentia - Epididymis - Vas deferens -

Ejaculatory duct - Urethra - Urethral meatus

(3) Seminiferous tubules - Vasa efferentia - Epididymis - Inguinal canal - Urethra

(4) Testis - Epididymis - Vasa efferentia - Vas deferens - Ejaculatory duct - Inguinal

canal - Urethra - Urethral meatus
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