Class 12 Biology Chapter 2 NEET Questions. We covered all the Class 12 Biology Chapter 2 NEET Questions in this post for free so that you can practice well for the exam.
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MCQ on Biology NEET for Students
In which of the following type of natural selection, do more individuals acquire mean character value?
(A) Stabilizing
(B) Directional
(C) Disruptive
(D) Diversifying
Option a – Stabilizing
A doctor identifies symptoms of sustained high fever (39° to 40°C), weakness, stomach pain, constipation, headache, and loss of appetite. The conclusion is that the patient is infected by
(A) pneumonia
(B) typhoid
(C) ascariasis
(D) elephantiasis
Option b – typhoid
Identify the CORRECT statement regarding the human respiratory system.
(A) The larynx serves as a common passage for food and air.
(B) Each terminal bronchiole gives rise to alveolus.
(C) Lungs are enclosed by a single-layered pericardium to prevent friction of lungs with adjacent organs.
(D) The trachea divides at the level of the 7th thoracic vertebra to form the right and left primary bronchi.
Option b – Each terminal bronchiole gives rise to alveolus.
Amphibians evolved into
(A) lobe-fined fish
(B) reptiles
(C) jawless vertebrates
(D) hemichordates
Option b – reptiles
(A) typhoid and the common cold
(B) AIDS and the common cold
(C) pneumonia and ringworm.
(D) pneumonia and typhoid
Option b – AIDS and the common cold
Which of the following is NOT a function of the conducting part of the human respiratory system?
(A) Transport of atmospheric air to the alveoli
(B) Humidification of air
(C) Removal of foreign particles from the air
(D) Diffusion of O₂ and CO₂ between blood and atmospheric air
Option d – Diffusion of O₂ and CO₂ between blood and atmospheric air
Read the following statements and select the correct option. Statement I: About 65 mya, dinosaurs disappeared from the earth. Statement II: Ichthyosaurs were fish-like reptiles.
(A) Statement I is correct and statement II is incorrect.
(B) Statement II is correct and statement I is incorrect.
(C) Both statement I and statement II are correct.
(D) Both statement I and statement II are incorrect.
Option c – Both statement I and statement II are correct.
……… is commonly called a smack.
(A) Cocaine
(B) Heroin
(C) Opioid
(D) Cannabinoid
Option b – Heroin
Respiration through a network of tracheal tubes occurs in
(A) coelenterates
(B) insects
(C) flatworms
(D) poriferans
Option b – insects
According to French naturalist Lamarck
(A) only minor variations are inheritable.
(B) evolution of life forms had occurred but was driven by the use and disuse of organs.
(C) the process of evolution is gradual.
(D) mutations are random and directionless which cause evolution.
Option b – evolution of life forms had occurred but was driven by the use and disuse of organs.
The most serious and fatal type of malaria is caused by
(A) P. falciparum
(B) P.vivax
(C) P.malaria
(D) all of these
Option a – P. falciparum
Every 100 ml of oxygenated blood can deliver around ……… ml O₂ to the tissues under normal physiological conditions.
(A) 5
(B) 25
(C) 45
(D) 65
Option a – 5
Which of the following statement INCORRECT?
(A) Homo sapiens arose during the ice age between 75,000-10,000 years ago.
(B) The fossils of Homo erectus were discovered in Java in 1891.
(C) Homo habilis was known as the first human-like hominid.
(D) The primate Dryopithecus was more man-like.
Option d – The primate Dryopithecus was more man-like.
In which of the following organ immature lymphocytes differentiate into antigen-sensitive lymphocytes?
(A) Spleen
(B) Lymph nodes
(C) Peyer’s patches of the small intestine
(D) Thymus
Option d – Thymus
The diffusion membrane is made of these three layers,
(A) squamous epithelium
(B) endothelium of alveolar capillaries
(C) basement substance in between squamous epithelium and endothelium of alveolar capillaries
(D) cuboidal epithelium
Option d – cuboidal epithelium
Read the following statements and select the correct option. i. In allopatric speciation, the original population. becomes separated spatially because of geographical barriers, into two or more groups. ii. Geographical isolation occurs when the original population is separated into two or more groups by geographical barriers. iii. Temporal isolation occurs due to environmental factors like photoperiod, temperature, and humidity. iv. Spatial isolation occurs due to differences in the morphological structures of reproductive organs.
(A) i,ii and iv are correct.
(B) ii and iii are incorrect.
(C) i and iii are incorrect.
(D) i, ii and iii are correct.
Option d – i, ii and iii are correct.
Which of the following plants dominated the Jurassic period?
(A) Ginkgos
(B) Progymnosperms
(C) Conifers
(D) Sphenopsoids
Option c – Conifers
Which of the following is a feature of Neanderthal man?
(A) Used hides to protect their body
(B) Cranial capacity 900cc
(C) Hunted with stone weapons
(D) Did not eat meat
Option a – Used hides to protect their body
A widely used diagnostic test for AIDS is
(A) ELISA
(B) Widal test
(C) Computed tomography
(D) Magnetic resonance imaging
Option a – ELISA
The solubility of CO₂ in the blood is ………. times higher than that of O₂.
(A) 10-15
(B) 20-25
(C) 80-90
(D) 40-50
Option b – 20-25
Select the mismatch. ( Class 12 Biology Chapter 2 NEET Questions )
(A) Industrial melanism – Melanised moths
(B) Adaptive radiation – Darwin’s finches
(C) Homologous organs – Thorns of Bougainvillea and tendrils of Cucurbita
(D) Intra-specific struggle – Struggle between sheep, horse, and cow
Option d – Intra-specific struggle – Struggle between sheep, horse, and cow
Identify the CORRECT statement.
(A) Antibody-bound mast cells release histamine and serotonin.
(B) When a person is exposed to allergens, his body secretes IgM.
(C) Adrenaline and steroids cannot be used to reduce the symptoms of allergy.
(D) Allergies are contagious.
Option a – Antibody-bound mast cells release histamine and serotonin.
The volume of air that remains in the lungs after a normal expiration is
(A) total lung capacity
(B) functional residual capacity
(C) vital capacity
(D) inspiratory capacity
Option b – functional residual capacity
During inspiration ( Class 12 Biology Chapter 2 NEET Questions )
(A) intra-pulmonary pressure is higher than atmospheric pressure.
(B) intra-pulmonary pressure is lower than atmospheric pressure.
(C) diaphragm and intercostal muscles relax.
(D) diaphragm contracts and intercostal muscles relax.
Option b – intra-pulmonary pressure is lower than atmospheric pressure.
We covered all the class 12 biology chapter 2 neet questions above in this post for free so that you can practice well for the exam.
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