List of top Biology Questions

Which of the following is used to induce mutation in crop plants?
Which of the following is a marine fish?
Which of the following is a source of quinine?
In which of the following does vegetative propagation take place through tuber?
Which of the following is a biotic component of the ecosystem?
Where are woody lianas / climbers found?
By which of the following bonds are the nucleotides of DNA attached?
By which of the following is water hyacinth pollinated?
Which of the following is related to pomiculture?
On which of the following planets is there a possibility of life?
Which of the following is an example of analogous organs?
In which of the following are male and female flowers found on the same plant?
Which of the following is an important factor in the formation of new species?
Which of the following is the period between birth and death?
Which of the following cannot pass through placenta?
The opening of which of the following is known as blastopore?
Which of the following is a correct pair?
Which of the following is a soluble RNA?
Sertoli cells are controlled by which of the following hormones?
Which of the following is affected by SO$_2$ pollution?
By which of the following is sugarcane sown?

The sequence of nitrogenous bases in a segment of a coding strand of DNA is 
5' – AATGCTAGGCAC – 3'. Choose the option that shows the correct sequence of nitrogenous bases in the mRNA transcribed by the DNA.

Match List-I with List-II \[ \begin{array}{|l|l|} \hline \textbf{Product} & \textbf{Producer} \\ \hline (A) \; \text{Citric Acid} & (I) \; \text{Trichoderma polysporum} \\ \hline (B) \; \text{Ethanol} & (II) \; \text{Monascus purpureus} \\ \hline (C) \; \text{Statins} & (III) \; \text{Saccharomyces cerevisiae} \\ \hline (D) \; \text{Cyclosporin A} & (IV) \; \text{Aspergillus niger} \\ \hline \end{array} \]
Match List-I with List-II \[ \begin{array}{|l|l|} \hline \text{List-I} & \text{List-II} \\ \hline (A) \; i & (I) \; \text{Permease} \\ \hline (B) \; z & (II) \; \text{Repressor} \\ \hline (C) \; y & (III) \; \text{Transacetylase} \\ \hline (D) \; a & (IV) \; \beta\text{-Galactosidase} \\ \hline \end{array} \]
Match List I with List II \[ \begin{array}{|l|l|} \hline \textbf{List I} & \textbf{List II} \\ \hline (A) \; \text{Flower Colour} & (I) \; \text{Green} \\ \hline (B) \; \text{Seed colour} & (II) \; \text{Yellow} \\ \hline (C) \; \text{Pod colour} & (III) \; \text{Constricted} \\ \hline (D) \; \text{Pod shape} & (IV) \; \text{White} \\ \hline \end{array} \]