List of top Botany Questions

Floral formula of Solanum nigrum:

Identify the correct definitions of the following molecular biology terms:
I. Splicing = Removal of introns
II. Capping = Addition of unusual methyl guanosine triphosphate added to 5" end of hn RNA
III. Tailing = Deletion of adenylate residues at 3'end of hn RNA
IV. Anticodon= Specifies termination of polynucleotide chain

If one species diverges to become two or more species, it is called:

Pick up the incorrect pair:

A person is with short stature, small round head, furrowed tongue and partially open mouth and retarded physical, psychomotor and mental development. The person is said to be suffering from this genetic disorder:

Assertion (A): Disulphide bridges help in stabilization of protein structure.
Reason (R): Sulphur forms disulphide bridges in the quaternary structure of proteins.

Specialized epidermal cells surrounding the guard cells are:

Assertion (A): Abscisic acid is called stress hormone.
Reason (R): Abscisic acid increases the tolerance of plants to various kinds of stresses.

Assertion (A): \( \sigma \) (Sigma) and \( \rho \) (Rho) factors are essential for transcription in bacteria.
Reason (R): \( \sigma \) (sigma) factor helps in initiation and \( \rho \) (Rho) factor helps in termination of transcription.

Statement I: Right atrio ventricular aperture in human heart is guarded by a tricuspid valve.
Statement II: Blood plasma without fibrinogen and some other plasma proteins is called lymph.

In cockroach, inspiration takes place through:

Match the following % Table \begin{table}[h!] \renewcommand{\arraystretch}{0.9} % For better row height \centering \begin{tabular}{|l|l|} \hline List - I & List - II
\hline A) ABO blood groupings & I) Frame-shift mutations
\hline B) Starch synthesis in pea seeds & II) Sickle cell anemia
\hline C) Point mutation & III) Pleiotropy
\hline D) Deletion of DNA base pairs & IV) Co-dominance
\hline \end{tabular} \end{table}
The correct answer is

In Morgan’s experiments on linkage in Drosophila, the percentage of white-eyed, miniature-winged recombinants in the F\(_2\) generation is:

Identify the correct sentences regarding the role of physiological responses of phytohormones:
I. Ethylene initiates sprouting of potato tubers
II. Gibberellins promote senescence
III. Auxins promote flowering in pineapple
IV, Abscisic acid inhibits seed germination

Cynognathus is a transitional form between:

Regulatory proteins in a myofibril are: