List of top Biology Questions asked in NEET (UG)

Given below are two statements:
Statement I : Bt toxins are insect group specific and coded by a gene cry IAc. 
Statement II : Bt toxin exists as inactive protoxin in B. thuringiensis. However, after ingestion by the insect the inactive protoxin gets converted into active form due to acidic pH of the insect gut. 
In the light of the above statements, choose the correct answer from the options given below:

Given below are some stages of human evolution. Arrange them in correct sequence. (Past to Recent)
A. Homo habilis 
B. Homo sapiens 
C. Homo neanderthalensis 
D. Homo erectus
Choose the correct sequence of human evolution from the options given below:

Given below are two statements:
Statement I: Mitochondria and chloroplasts both double membranes bound organelles. 
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared chloroplast. I
In the light of the above statements, choose the mis appropriate answer from the options given below

Identify the correct option (A), (B), (C), (D) with respect to spermatogenesis.

Match List I with List II:

List I		List II
A	Mesozoic Era	I	Lower invertebrates
B	Proterozoic Era	II	Fish & Amphibia
C	Cenozoic Era	III	Birds & Reptiles
D	Paleozoic Era	IV	Mammals

Choose the correct answer from the options given below:

Match List I with List II:

List I		List II
A	Exophthalmic goiter	I	Excess secretion of cortisol, moon face & hypergylcemia
B	Acromegaly	II	Hypo-secretion of thyroid hormone and stunted growth.
C	Cushing’s syndrome	III	Hyper secretion of thyroid hormone & protruding eye balls.
D	Cretinism	IV	Excessive secretion of growth hormone.

Choose the correct answer from the options given below:

Match List I with List II:

List I		List II
A	P wave	I	Heart muscles are electrically silent.
B	QRS complex	II	Depolarisation of ventricles.
C	T wave	III	Depolarisation of atria.
D	T-P gap	IV	Repolarisation of ventricles.

Choose the correct answer from the options given below:

As per ABO blood grouping system, the blood group of father is $B^+$ , mother is $A^+$ and child is $O^+$. Their respective genotype can be
A. $I^B i/I^A i/ii$
B. $I^B I^B /I^A I^A /ii$
C. $ I^A I^B /iI^A /I^B i$
D. $I^A i/I^B i/I^A i$
E. $iI^B /iI^A /I^A I^B$
Choose the most appropriate answer from the options given below :

Match List I with List II:

List I		List II
A	RNA polymerase III	I	snRNPs
B	Termination of transcription	II	Promotor
C	Splicing of Exons	III	Rho factor
D	TATA box	IV	SnRNAs, tRNA

Choose the correct answer from the options given below:

Match List I with List II:

List I		List II
A	Unicellular glandular epithelium	I	Salivary glands
B	Compound epithelium	II	Pancreas
C	Multicellular glandular epithelium	III	Goblet cells of alimentary canal
D	Endocrine glandular epithelium	IV	Moist surface of buccal cavity

Choose the correct answer from the options given below:

Regarding catalytic cycle of an enzyme action, select the correct sequential steps :
A. Substrate enzyme complex formation. 
B. Free enzyme ready to bind with another substrate. 
C. Release of products. 
D. Chemical bonds of the substrate broken. 
E. Substrate binding to active site. 
Choose the correct answer from the options given below :

Given below are two statements :
Statement I : Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced. 
Statement II : Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes. 
In the light of above statements, choose the most appropriate answer from the options given below :

Choose the correct statement given below regarding juxta medullary nephron.

The following are the statements about non- chordates:
A. Pharynx is perforated by gill slits.
B. Notochord is absent.
C. Central nervous system is dorsal. 
D. Heart is dorsal if present.
E. Post anal tail is absent.
Choose the most appropriate answer from the options given below:

Match List I with List II related to digestive system of cockroach.

List I		List II
A	The structures used for storing of food.	I	Gizzard
B	Ring of 6-8 blind tubules at junction of foregut and midgut.	II	Gastric Cacca
C	Ring of 100-150 yellow coloured thin filaments at junction of midgut and hindgut.	III	Malpighian tubules
D	The structures used For grinding the food.	IV	Crop

Choose the correct answer from the options given below:

Given below are two statements:
Statement I: Gause's competitive exclusion principle states that two closely related species competing for different resources cannot exist indefinitely.
Statement II: According to Gause's principle, during competition, the inferior will be eliminated. This may be true if resources are limiting
In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements:
Statement I: The presence or absence of hymen is not a reliable indicator of virginity.
Statement II: The hymen is torn during the first coitus only.
In the light of the above statements, choose the correct answer from the options given below:

Match List I with List II:

List I		List II
A	EFibrous joints	I	Adjacent vertebrae, limited movement
B	Cartilaginous joints	II	Humerus and Pectoral girdle, rotational movement
C	Hinge joints	III	Skull, don’t allow any movement
D	Ball and socket joints	IV	Knee, help in locomotion

Choose the correct answer from the options given below:

Match List I with List II:

List I		List II
A	Pterophyllum	I	Hag fish
B	Myxine	II	Saw fish
C	Pristis	III	Angel fish
D	Exocoetus	IV	Flying fish

Choose the correct answer from the options given below:

Match List I with List II:

List I		List II
A	Axoneme	I	Centriole
B	Cartwheel pattern	II	Cilia and flagella
C	Crista	III	Chromosome
D	Satellite	IV	Mitochondria

Choose the correct answer from the options given below:

Given below are two statements :
Statement I : In the nephron, the descending limb of loop of Henle is impermeable to water and permeable to electrolytes.
Statement II : The proximal convoluted tubule is lined by simple columnar brush border epithelium and increases the surface area for reabsorption.
In the light of the above statements, choose the correct answer from the option given below :

Match List I with List II.

List I		List II
A.	Non-medicated IUD	I.	Multiload 375
B.	Copper releasing IUD	II.	Progestogens
C.	Hormone releasing IUD	III.	Lipper loop
D.	Implants	IV.	LNG-20

Choose the correct answer from the options given below:

Consider the following statements :
A. Annelids are true coelomates
B. Poriferans are pseudocoelomates
C. Aschelminthes are acoelomates
D. Platyhelminthes are pseudocoelomates
Choose the correct answer from the options given below :

Match List I with List II.

List I		List II
A.	Common cold	I.	Plasmodium
B.	Haemozoin	II.	Typhoid
C.	Widal test	III.	Rhinoviruses
D.	Allergy	IV.	Dust mites

Choose the correct answer from the options given below: