List of top Botany Questions

Assertion (A): PCR is used to detect HIV. 
Reason (R): It is based on the principle of antigen-antibody interaction. 
 

Identify A, B, and C in the diagram of pBR322 (A, B, and C are restriction sites):


 

Process of technique of detecting HIV in suspected AIDS patients:
Formation of an embryo from an unfertilized female gamete

Study the comparison of different transport mechanisms to pick out the correct pair in the following format: 


 

Assertion (A): By mutations genetic variations are created resulting in a new trait not found in the parental type.
Reason (R): Plants having desirable characters will be selected after inducing mutations with chemicals or radiation.
Removal of introns and joining of exons in defined order is called:

Assertion (A): In general, gene gun method is used to insert DNA into the competent host. 
Reason (R): In biolistic method, cells are bombarded with DNA coated with microparticles of gold. 
 

Match the following list: 


 

Regulatory proteins in a myofibril are:
Study the following and pick up the correct statements:
  • The center of the posterior portion of the retina is called the macula lutea.
  • The site of the retina where the optic nerve exits the eye is called the blind spot.
  • Cones contain a visual pigment called iodopsin.
  • Rods contain a protein called rhodopsin.

Match the following: 

Karyotype of Klinefelter’s syndrome is:
In an ECG of a normal healthy person, the duration of the R-R interval is about:
Mad Cow disease causing prion, may reach man through beef and cause
Match the following \begin{table}[h!] \centering \begin{tabular}{|l|l|} \hline List - I & List - II
\hline A. Operator site & I. Binding site for RNA polymerase
B. Promoter site & II. Binding site for repressor
C. Regulator gene & III. Codes for Enzyme
D. Structural gene & IV. Codes for repressor
\hline \end{tabular} \caption{Matching the following} \end{table} The correct answer is
The separated DNA fragments can be visualised after staining with 'X' and exposure to 'Y'. The 'X' and 'Y' are
Match the following: \renewcommand{\arraystretch}{1.3} \begin{table}[h!] \centering \setlength{\tabcolsep}{10pt} \begin{tabular}{|c|c|c|c|} \hline S. No & Crop & Variety & Resistance to Disease
\hline I & Wheat (గోధుమ) & Pusa sadabahar (A) & Leaf and stripe rust (W)
II & Brassica (క్రూసిఫెరే) & Pusa komal (B) & White rust (X)
III & Cow Pea (చిక్ పీస్) & Pusa swarnim (C) & Bacterial blight (Y)
IV & Chilli (మిర్చి) & Himagiri (D) & Leaf curl (Z)
\hline \end{tabular} \end{table}
Assertion (A): Pancreas is a merocrine gland.
Reason (R): The apical parts of the pancreatic cells are pinched off along with the secretory product.
Parazoans exhibit:
Botryoidal tissue in body cavity is characteristic of:
Assertion (A) : Eggs of \textit{Ascaris are described as mamillated eggs.} Reason (R) : Each egg is surrounded by a protein coat with rippled surface.
Marijuana, hashish, charas and ganja are described as
Study the following and pick up the incorrect statements:
I.The axolemma has more \( K^+ \) leakage channels than \( Na^+ \) leakage channels.
II.Ligand gated channels open or close in response to electrical stimuli.
III.Voltage gated channels open in response to a change in membrane potential.
IV.Speed of conduction of nerve impulse is more in non myelinated nerve fibre than the myelinated nerve fibre.
These hormones are commonly called catecholamines: