List of top Biology Questions asked in CUET (UG)

The reproductive cycle of female primates is called the menstrual cycle. Menstrual cycle starts only after attaining sexual maturation (puberty). Generally, during ovu lation only one ovum is released per menstrual cycle. The cyclical changes in the ovary and the uterus during menstrual cycle are induced by changes in the levels of pituitary and ovarian hormones. After coitus, sperms are transported to the junction of the isthmus and ampulla, where the sperm fertilises the ovum leading to formation of a diploid zygote.

In nature, populations of different species in a habitat do not live in isolation but interact in many ways. Depending on the outcome, these interactions between two species are classified as competition, predation, parasitism, commensalism, amensalism, and mutualism. Through these interactions, trophic energy transfer is facil itated. Some predators help in controlling their prey populations, whereas plants have evolved diverse morphological and chemical defenses against herbivores.

Which of the following controls/control the growth of bollworms?

The common approach(es) for the treatment of cancer is/are:
(A) Vaccination
(B) Surgery
(C) Physiotherapy
(D) Radiation therapy
(E) Immunotherapy
Choose the correct answer from the options given below:

In diploid organisms, which of the following undergoes meiosis?

When one of the parents has ‘A’ blood group and the other parent has ‘O’ blood group, then their child can have _______ blood group.

Who proposed that the first form of life could have come from pre-existing non-living organic molecules?

The size of VNTR varies from:

The method where an ovum is transferred from a donor into the fallopian tube of another female is:

Given below are two statements:
Statement I: In a bioreactor, small volumes of cultures are developed where useful bio products are produced.
Statement II: In downstream processing, products formulated with preservatives are ready for marketing without quality testing.
Choose the correct answer from the options given below:

Which one is the correct example of hermaphrodites?

Which one of the following is not associated with megasporangium?

Match List-I with List-II:

List-I (Recent Extinction)	List-II (Place)
(A) Dodo	(I) Africa
(B) Quagga	(II) Russia
(C) Thylacine	(III) Mauritius
(D) Steller’s Sea Cow	(IV) Australia

Choose the correct answer from the options given below:

Which of the following statements is not correct for Restriction enzymes?

Given below is the DNA coding sequence. Its complementary strand would read as:
5’ – GTATTACG – 3’

Match List-I with List-II:

List-I (Genes)	List-II (Proteins– Codes for lac operon)
(A) i	(I) permease
(B) a	(II) β-galactosidase
(C) y	(III) transacetylase
(D) z	(IV) repressor

Choose the correct answer from the options given below:

Which of the following plays a significant role in our stomach in checking disease-causing microbes?

Amino acid is attached to which site of tRNA?

Which one of the following lymphoid organs is large at birth but reduces with age?

Given below are two statements:
Statement I: Whisky, brandy, and rum are produced without distillation of the fermented broth.
Statement II: Saccharomyces cerevisiae is called doctor’s yeast.
Choose the correct answer from the options below:

Analogous structures are a result of:

Select the incorrect statement:

Which of the following is not a step of Polymerase Chain Reaction?

“Transforming Principle” was given by:

Arrange the following steps of DNA fingerprinting in proper sequence:
(A) Hybridization using labeled VNTR probe
(B) Separation of DNA fragments by electrophoresis
(C) Digestion of DNA by restriction endonucleases
(D) Blotting of separated DNA fragments to nylon
(E) Isolation of DNA
Choose the correct answer from the options given below: