Class XI & XII · Biology practice
Zoology PYQs Check your understanding, bookmark questions and revisit your mistakes.
Enable JavaScript to check answers and save progress. Stored explanations remain available below.
407 questions in this collection · Page 13 of 41
Human Reproduction
Receptors for sperm binding in mammals are
present on:
A Corona radiata B Vitelline membrane C Perivitelline space D Zona pellucida
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Reproductive Health
Match List-I with List-II.
List-I
List-II
(A)Vaults
(I)Entry of sperm through Cervix is blocked
(B)IUDs
(II)Removal of Vas deferens
(C)Vasectomy
(III)Phagocytosis of sperms within the Uterus
(D)Tubectomy
(IV)Removal of fallopian tube
Choose the correct answer from the options given below:
A A-IV, B-II, C-I, D-III B A-I, B-III, C-II, D-IV C A-II, B-IV, C-III, D-I D A-III, B-I, C-IV, D-II
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Reproductive Health
Veneral diseases can spread through:
A A, B and C only
B B, C and D only C B and C only D A and C only
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Reproductive Health
Which one of the following is an example of
Hormone releasing IUD?
A CuT B LNG 20 C Cu 7 D Multiload 375
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Principles Of Inheritance And Variation
In a cross between a male and female, both
heterozygous for sickle cell anaemia gene, what
percentage of the progeny will be diseased?
A 50% B 75% C 25% D 100%
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Molecular Basis Of Inheritance
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it ?
A T : 20; G : 30; C : 20 B T : 20; G : 20; C : 30 C T : 30; G : 20; C : 20 D T : 20; G : 25; C : 25
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Molecular Basis Of Inheritance
Which is the "Only enzyme" that has "Capability" to catalyse Initiation, Elongation and Termination in the process of transcription in prokaryotes?
A DNA dependent DNA polymerase B DNA dependent RNA polymerase C DNA Ligase D DNase
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Molecular Basis Of Inheritance
Which of the following RNAs is not required for the synthesis of protein?
A mRNA B tRNA C rRNA D siRNA
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Strategies For Enhancement In Food Production
Which of the following is not an objective of
Biofortification in crops?
A Improve protein content B Improve resistance to diseases C Improve vitamin content D Improve micronutrient and mineral content
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Microbes In Human Welfare
Match List-I with List-II.
List-I
List-II
(A)Aspergillus niger
(I)Acetic Acid
(B)Acetobacter aceti
(II)Lactic Acid
(C)Clostridium butylicum
(III)Citric Acid
(D)Lactobacillus
(IV)Butyric Acid
Choose the correct answer from the options given below:
A A-I, B-II-, C-III, D-IV B A-II, B-III, C-I, D-IV C A-IV, B-II, C-I, D-III D A-III, B-I, C-IV, D-II
Show explanation
Bookmark
Try again
Request an AI explanation using Show explanation.
Page score: 0/40