List of top Biology Questions asked in GUJCET

The event of species extinction differs from the earlier extinction and the first five extinctions because the main difference is that this extinction...
Which of the following conditions is associated with "overeating"?
Which of the following types of food supports the largest population?
In a pond, there were 40 lotus plants in the previous year. If the reproduction rate is such that 6 new plants are added each year, what will be the birth rate of the plants?
What did Alexander von Humboldt first describe?
Which of the following is not a component of the digestive system?
If a PCR reaction is carried out 30 times, how much can the DNA sequence increase?
The effect of toxin B on a certain type of bacteria is mentioned. The toxin does not affect the bacteria due to its specific mechanism.
Identify the incorrect statement related to the following context:
The model experiment for assessing certain types of genetically modified animals can be conducted.
Which microorganism is used in plant genetic engineering?
Choose the correct option that describes the mutual benefit or harm between two organisms: "One benefits while the other neither benefits nor suffers."
What method is used for the production of "Pomato"?
The study of DNA, particularly regarding the mechanism of transgenics, and the techniques associated with gene therapy, etc.
What is the role of PCR in the amplification of DNA?
What is the role of nitrogen-fixing bacteria in the ecosystem?
Which of the following sexually transmitted infections are spread by other means besides sexual intercourse?
If mother's blood group is 'A' and father's blood group is 'O', then what can be the blood group of their child?
If a double-stranded DNA contains 30\% adenine, state the percentage of cytosine in the same DNA.
Which of the following statements is correct? 
(i) Baculoviruses are considered best members for species-specific, short-spectrum insecticide applications. 
(ii) Bacillus thuringiensis is used to control butterfly caterpillars. 
(iii) Use of ladybirds is very beneficial in getting rid of mosquitoes. 
(iv) Trichoderma fungi are used in the treatment of diseased animals under biocontrol. 
\( \alpha \)-1 antitrypsin is used to treat which disease?
In which mechanism specific mRNA is inactivated after binding to complementary dsRNA?
Which naturalist gives an explanation of species-territory relationships?
What interaction occurs between oceanic and cloven fish?
What does the pointed 'X' in the figure below represent? 
What does the pointed 'X' in the figure below represent?
Based on which of the following symptoms, doctor 'X' will diagnose the patient with pneumonia?