List of top Biology Questions asked in CUET (UG)

Which one of the following guides the entry of the pollen tube into the embryo sac?

Match List-I with List-II \[ \begin{array}{|l|l|} \hline \textbf{Product} & \textbf{Producer} \\ \hline (A) \; \text{Citric Acid} & (I) \; \text{Trichoderma polysporum} \\ \hline (B) \; \text{Ethanol} & (II) \; \text{Monascus purpureus} \\ \hline (C) \; \text{Statins} & (III) \; \text{Saccharomyces cerevisiae} \\ \hline (D) \; \text{Cyclosporin A} & (IV) \; \text{Aspergillus niger} \\ \hline \end{array} \]

Antibody molecule has:

The process of copying genetic information from one strand of DNA into RNA is termed as -

Which one of the following is not associated with the process of transcription in bacteria?

The first isolated restriction endonuclease was:

If a double-stranded DNA has 15% of adenine, find out the percent of cytosine in the DNA?

Arrange the following geological periods in their occurrence from latest to oldest order.
(A) Triassic
(B) Carboniferous
(C) Tertiary
(D) Jurassic

ELISA is based on the principle of:

Of the incident solar radiation, what is the percentage of photosynthetically active radiation (PAR)?

Which one of the following structures is haploid (n) in relation to the male reproductive system?

Which of the following is the primary female sex organ?

Genetically modified plants have been useful in:

Transgenic animals are used to understand the contribution of genes in the development of diseases such as:

Humification leads to:

Wildlife safari parks are example of-

Arrange the given products formed during sewage treatment in correct sequence:
(A) Biogas
(B) Activated sludge
(C) Flocs
(D) Primary sludge

A small standing crop of phytoplankton supports a large standing crop of zooplankton. This can be correctly represented by:

Thorn of Bougainvillea and tendril of Cucurbita are:

If a man is eating fish as his food, which trophic level is occupied by him in the food chain?

Arrange the following groups of plants according to their appearance on earth.
(A) Angiosperms
(B) Seed ferns
(C) Rhynia type plants
(D) Psilophyton

Which of the following statements are true with reference to homology or homologous organs?
(A) Homology indicates common ancestry.
(B) Whale and Cheetah share similarities in the pattern of the bones of the forelimbs.
(C) Vertebrate heart is an example of homologous organs.
(D) Thorn of Bougainvillea and tendrils of cucurbita represent homology.

The number of individuals in the reproductive age group is more than the number of individuals in the pre-reproductive age group, the shape of its age pyramid would reflect the growth status of the population as:

Baculoviruses are pathogens that attack:

Which of the following steps are related to polymerase chain reaction (PCR)?
(A) Extension
(B) Annealing
(C) Propagation
(D) Denaturation