List of top Biology Questions asked in CUET (UG)

The process of mineralization by microorganisms helps in the release of:

Match List-I with List-II:

List-I Placental mammals	List-II Counterpart Marsupials
(A) Anteater	(II) Numbat
(B) Bobcat	(IV) Tasmanian tiger cat
(C) Lemur	(I) Spotted cuscus
(D) Flying squirrel	(III) Flying Phalanger

Choose the correct answer from the options given below:

Arrange the given steps of DNA fingerprinting in the sequence from initiation to end:
(A) Digestion of DNA by restriction endonuclease
(B) Isolation of DNA
(C) Hybridisation using labelled VNTR probe
(D) Transferring (blotting) of separated DNA fragments to synthetic membrane
Choose the correct answer from the options given below:

Match List-I with List-II:

List-I (Scientists)	List-II (Discovery)
(A) Sutton and Boveri	(II) Chromosomal Theory of Inheritance
(B) Sturtevant	(IV) Genetic maps
(C) Henking	(I) X-Body
(D) Griffith	(III) Transformation in bacteria

Choose the correct answer from the options given below:

Failure of chromatids to segregate during cell division cycle results in:

Which of the following pair of contrasting traits was not studied by Mendel?

Arrange the following stages of oogenesis in order of their occurrence:
(A) Ovum
(B) Oogonia
(C) Primary oocyte
(D) Secondary oocyte
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Sex in human embryos is determined by:

In humans, mammary glands are divided into ___ lobes:

Primary Endosperm Nucleus is the product of:

Match List-I with List-II:

List-I (Structures)	List-II (Functions)
(A) Filiform apparatus	(III) Guides pollen tube into the synergid
(B) Tapetum	(IV) Nourishes the pollen grain
(C) Exine	(I) Made up of sporopollenin
(D) Funicle	(II) Attachment of ovule to the placenta

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I (Concepts)	List-II (Explanation)
(A) Standing state	(IV) Amount of mineral nutrients in the soil at a given time
(B) Secondary productivity	(II) Rate of formation of organic matter by consumers
(C) Standing crop	(III) Mass of living matter in a trophic level at a given time
(D) Net primary productivity	(I) Available biomass for the consumption of heterotrophs

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In which ecosystem is the biomass of primary consumers greater than producers?

Two closely related species can co-exist indefinitely and violate Gause’s ‘Competitive Exclusion Principle’ by:

In a country, at any time, the population has the same number of young and mature ones. What type of growth does it reflect?

Match List-I with List-II:

List-I Interspecies Relationships	List-II Features
(A) Commensalism	(IV) One species benefits and other remains unaffected
(B) Mutualism	(III) Both the species are benefitted
(C) Amensalism	(II) One species is harmed and the other is unaffected
(D) Parasitism	(I) One species is benefitted at the expense of the other

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When an insect feeds on the Bt plant, the insect dies due to the conversion of inactive protein to active protein in:

Expand "GEAC":

Match List-I with List-II:

List-I Transgene	List-II Used for/Products
(A) α-1-antitrypsin	(III) Treat emphysema
(B) cryIAc	(II) Corn borer
(C) Antisense RNA	(I) Meloidgyne incognitia
(D) cryIAb	(IV) Cotton bollworms

Choose the correct answer from the options given below:

Which of the following statements are incorrect?
(A) Fragments of DNA can be separated by ELISA.
(B) Transformation is a procedure through which a piece of DNA is introduced in a host bacterium.
(C) Recombinant DNA technology does not involve isolation of a desired DNA fragment.
(D) DNA ligases are used for stitching DNA fragments into a vector.
Choose the answer from the options given below:

Arrange the following steps involved in the transformation of bacteria in a sequence from initiation to end.
(A) Incubation of rDNA with bacterial cell on ice
(B) Treatment with divalent cations
(C) Heat shock treatment
(D) Selection on antibiotic containing agar plate
(E) Placed them again on ice
Choose the correct answer from the options given below:

Downstream processing method involves:

The beetle used as a biocontrol agent for aphids and mosquitoes is:

Match List-I with List-II:

List-I Products	List-II Organisms
(A) Statin	(III) Monascus
(B) Clot buster	(I) Streptococcus
(C) Swiss cheese	(IV) Propionibacterium
(D) Cyclosporin-A	(II) Trichoderma

Choose the correct answer from the options given below:

In sewage treatment, flocs are: