NEET 2025 Biology Questions

Match List-I with List-II: List-I (Group) A. Pteridophyte B. Bryophyte C. Angiosperm D. Gymnosperm List-II (Example) I. Salvia II. Ginkgo III. Polytrichum IV. Salvinia []

In bryophytes, the gemmae help in which one of the following? []

Which one of the following is the characteristic feature of gymnosperms?

Given below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence. A. Prothallus stage B. Meiosis in spore mother cells C. Fertilisation D. Formation of archegonia and antheridia in the gametophyte E. Transfer of antherozoids to the archegonia in the presence of water []

The correct sequence of events in the life cycle of bryophytes is: A. Fusion of antherozoid with egg B. Attachment of gametophyte to substratum C. Reduction division to produce haploid spores D. Formation of sporophyte E. Release of antherozoids into water []

Match List-I with List-II LIST-I A. Scutellum B. Non-albuminous seed C. Epiblast D. Perisperm LIST-II I. Persistent nucellus II. Cotyledon of Monocot seed III. Groundnut IV. Rudimentary cotyledon

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

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

Given below are two statements: Statement I: In a floral formula, ⊕ stands for zygomorphic nature of the flower, and G stands for inferior ovary. Statement II: In a floral formula, ⚥ stands for actinomorphic nature of the flower and G stands for superior ovary. In the light of the above statements, choose the correct answer:

Which of the following is an example of a zygomorphic flower?

Match List-I with List-II. List-I A. Centromere B. Cilium C. Cristae D. Cell membrane List-II I. Mitochondrion II. Cell division III. Cell movement IV. Phospholipid bilayer ()

Which one of the following statements refers to Reductionist Biology?()

Given below are two statements: Assertion (A): The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell. Reason (R): Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus. ()

From the statements given below choose the correct option: Statement A: The eukaryotic ribosomes are 80S and prokaryotic ribosomes are 70S. Statement B: Each ribosome has two sub-units. Statement C: The two sub-units of 80S ribosomes are 60S and 40S while that of 70S are 50S and 30S. Statement D: The two sub-units of 80S ribosomes are 60S and 20S and that of 70S are 50S and 20S. Statement E: The two sub-units of 80S are 60S and 30S and that of 70S are 50S and 30S. ()

A specialised membranous structure in a prokaryotic cell which helps in cell wall formation and DNA replication is: ()

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

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

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

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: []

() Name the class of enzyme that usually catalyzes the following reaction: S–G + S′ → S + S′–G Where, G → a group other than hydrogen S → a substrate S′ → another substrate

[] Which one of the following enzymes contains ‘Haem’ as the prosthetic group?

[] A competitive inhibitor competes with the substrate for binding to the

[] Match List-I with List-II: List-I A. Adenosine B. Adenylic acid C. Adenine D. Alanine List-II I. Nitrogen base II. Nucleotide III. Nucleoside IV. Amino acid Choose the option with all correct matches:

Identify the correct sequence of events in the Calvin cycle:

The light-dependent reactions of photosynthesis in plants occur in:

Calvin cycle operates in:

Which compound is the first stable product of C4 photosynthesis?

Which one of the following is involved in overcoming seed dormancy? []

Which one of the following growth regulators is associated with fruit ripening and senescence?[]

Which one of the following statements about photoperiodism is incorrect? []

Which plant hormone causes cell elongation, especially in stems? []

An important objective of biotechnology in agriculture is to: []

Match the Column – []

Which of the following are fused in somatic hybridization involving two varieties of plants? []

The capacity to generate a whole plant from any cell of the plant is called: []

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. []

Statement I: Two DNA sequences were prepared corresponding to A and B chains of human insulin and were introduced in the plasmids of Agrobacterium to produce the insulin chain. Statement II: Chain A and B were produced separately, extracted, and combined by creating disulfide bonds to form human insulin. Choose the correct option: []

Bt toxin protein that can kill many insects doesn't kill the Bacillus because: []

Assertion (A): Some ethical standards are required to evaluate the morality of scientific human activities that might help or harm living organisms. Reason (R): Genetic Engineering Approval Committee makes decisions regarding the validity of Genetically Modified (GM) research and the safety of introducing GM organisms. Choose the correct option: []

Which of the following statements is incorrect? []

[] Assertion (A): Both wind and water pollinated flowers are not very colourful and do not produce nectar. Reason (R): The flowers produce enormous amount of pollen grains in wind and water pollinated flowers. Choose the correct answer from the options given below

[] How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspore mother cell in an angiosperm plant?

[] Given below are two statements: Assertion (A): Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus. Reason (R): Presence of more than one nucleus in the tapetum increases the efficiency of nourishing the developing microspore mother cells. Choose the correct answer:

Which of the following correctly identifies the fruit types based on the given diagram of apple and strawberry?