NEET 2025

Find the statement that is NOT correct with regard to the structure of monocot stem.

In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called:

Role of the water vascular system in Echinoderms is :
A. Respiration and Locomotion
B. Excretion and Locomotion
C. Capture and transport of food
D. Digestion and Respiration
E. Digestion and Excretion
Choose the correct answer from the opti...

All living members of the class Cyclostomata are :

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : All vertebrates are chordates but all chordates are not vertebrate.
Reason (R) : The members of subphylum vertebrata p...

Which of the following statement is correct about location of the male frog copulatory pad?

Which one of the following is an example of ex-situ conservation?

Match List-I with List-II

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Each of the following characteristics represent a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization.
A. Multicellular heterotrophs with cell wall made of chitin.
B. Heterotrophs with...

Match List-I with List-II

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The protein portion of an enzyme is called:

Which one of the following statements refers to Reductionist Biology?

Which one of the following enzymes contains 'Haem' as the prosthetic group?

Histones are enriched with -

Name the class of enzyme that usually catalyze the following reaction :
\(S-G+S^{\#} \rightarrow S+S^{\#}-G\)
Where, G $\rightarrow$ a group other than hydrogen
\(S \rightarrow \text { a substrate }\)
$$S^{\#} \rightarrow \text { another su...

Which of the following genetically engineered organisms was used by Eli Lilly to prepare human insulin?

Polymerase chain reaction (PCR) amplifies DNA following the equation.

Silencing of specific mRNA is possible via RNAi because of

The blue and white selectable markers have been developed which differentiate recombinant colonies from nonrecombinant colonies on the basis of their ability to produce colour in the presence of a chromogenic substrate.
Given below are two ...

Identify the part of a bio-reactor which is used as a foam braker from the given figure.

In the above represented plasmid, an alien piece of DNA is inserted at EcoRI site. Which of the following strategies will be chosen to select the recombinant colonies?

Given below are two statements:
Statement 1 : The DNA fragments extracted from gel electrophoresis can be used in construction of recombinant DNA.
Statement II : Smaller size DNA fragments are observed near anode while larger fragments are ...

Which of the following enzyme(s) are NOT essential for gene cloning?
A. Restriction enzymes
B. DNA ligase
C. DNA mutase
D. DNA recombinase
E. DNA polymerase
Choose the correct answer from the options given below:

What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog?

Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs.
Choose the correct answer from the following :

What is the main function of the spindle fibers during mitosis?

From the statements given below choose the correct option :
A. The eukaryotic ribosomes are 80S and prokaryotic ribosomes are 70S.
B. Each ribosome has two sub-units.
C. The two sub-units of 80 S ribosome are 60 S and 40 S while that of 70 ...

Given below are two statements : one is labelled as Assertion (A), and the other is labelled as Reason (R).
Assertion (A) : The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and delive...

Match List-I with List- II.

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A specialised membranous structure in a prokaryotic cell which helps in cell well wall formation, DNA replication and respiration is

Match List-I with List-II.

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Consider the following statements regarding function of adrenal medullary hormones:
(A) It causes pupilary constriction.
(B) It is a hyperglycemic hormone.
(C) It causes piloerection.
(D) It increases strength of heart contraction.
Choose t...

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Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus?

Cardiac activities of the heart are regulated by:
A. Nodal tissue
B. A special neural centre in the medulla oblongata
C. Adrenal medullary hormones
D. Adrenal cortical hormones
Choose the correct answer from the options given below :

Why can't insulin be given orally to diabetic patients?

Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II : The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP...

Who is known as the father of Ecology in India?

Given below are two statements:

Statement I: In ecosystem, there is unidirectional flow of energy of sun from producers to consumers.

Statement II: Ecosystems are exempted from 2nd law of thermodynamics.

In the light of the above stateme...

Which of the following is the unit of productivity of an Ecosystem?

Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.

In frog, the Renal portal system is a special venous connection that acts to link:

Which of the following diagrams is correct with regard to the proximal $(P)$ and distal $(D)$ tubule of the Nephron.

Neoplastic characteristics of cells refer to:
A. A mass of proliferating cell
B. Rapid growth of cells
C. Invasion and damage to the surrounding tissue
D. Those confined to original location
Choose the correct answer from the options given ...

Which are correct:
A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.
B. Chemotherapeutics drugs are used to kill non-cancerous cells.
C. $\alpha$-interferon activate the cancer patients' immune system ...

After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s) / tissue(s) like
A. thymus
B. bone marrow
C. spleen
D. Iymph nodes
E. Peyer's patches
Choose the correct answ...

Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?

Match List-I with List-II

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Identify the statement that is NOT correct.

Find the correct statement :
(A) In human pregnancy, the major organ systems are formed at the end of 12 weeks.
(B) In human pregnancy the major organ systems are formed at the end of 8 weeks.
(C) In human pregnancy heart is formed after on...