List of top Biology Questions asked in CUET (UG)

Identify the regions of the transcription unit
Promoter
Sigma Factor
Terminator
The structural gene
Choose the correct answer from the option given below

The sequence of nitrogen bases of the temple strand of DNA in a transcription unit is 3'-ATTGAACTG-5'. The sequence of nitrogen bases in its mRNA transcription would be:

Which of the following nitrogenous base is NOT present in RNA ?

What will be the number of genotypes and phototypes obtain in F₂ generation when male parent RRyy is crossed with female parent rryy?

Arrange the following events of human embryo development in a correct sequence:
(A) Blastocyst Formation
(B) Implantation
(C) Formation of morula
(D) Cleavage in zygote

which layer of microsporangium nourishes the developing pollen grains ?

Amniocentesis is used to detect the

The process of transformation of spermatids into spermatozoa is known as:

which of the following structure is not an example of asexual reproduction ?

Which one is not a barrier method for birth control ?

What will be the number of chromosomes in the gamete of maize it its meiocyte contains 20 chromosomes ?

Select the example of Ex-situ conservation from the following

Which of the following has highest level of DDT in an aquatic food chain ?

Match List I with List II

List I		List II
A.	Green house gases	I.	Snow blindness
B.	Electrostatic precipitation	II.	Unleaded petrol
C.	Catalytic converter	III.	Thermal power plant
D.	UV_B radiation	IV.	Global warming

Choose the correct answer from the options given below :

When a snake eats a rat, that feeds on leaves of green plants. The snake is a ______ in the food chain ?

Match List I with List II

List I Interaction		List II Example
A.	Commenisalism	I.	Fig species and wasp
B.	Mutualism	II.	Sea anemone and Clown fish
C.	Competition	III.	Ascaris and humans
D.	Parasitism	IV.	abingdon tortoise and goat in Galapagos islands

Choose the correct answer from the options given below :

In which year an American company got patent rights on Basmati rice through US patent and trademark office.

In an ecosystem, the vertical distribution of different species occupying different levels is called.

The "River Popper Hypothesis" was given by.

RNA interference process occurs in ______ as a method of cellular defense.

In a laboratory, if 50 Drosophila out a population of 250 die in a week then the death rate of Drosophila is _____ individual per Drosophila per week.

Which of the following microbe is used for making bread ?

Baculoviruses attack on

Match List I with List II

List I		List II
A.	Methanobacterium	I.	Butyric acid
B.	Monoseus purpuress	II.	Break down of cellulose
C.	Clostridium butyricum	III.	Clot buster
D.	Streptococcus	IV.	Blood-cholestrol lowering agent

Choose the correct answer from the options given below :

The thermostable the enzyme used in PCR is