List of top Botany Questions

Assertion(A) :The reaction between \( CO_2 \) and \( H_2O \) in the RBC is much faster than in blood plasma. Reason(R) :Red blood cells contain a very high concentration of carbonic anhydrase

The thick filaments in a sarcomere of a myofibril are held together by a thin fibrous membrane called

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.

During glomerular filtration, net filtration pressure that causes filtration of blood in glomerular capillaries of Bowman's capsule is

Statement I:Angina pectoris is a warning signal of deprivation of blood supply to the heart muscles.
Statement II:Coronary artery disease is also called atherosclerotic heart disease.

In cockroach expiration takes place through

Statement I: Spiral cuticular thickenings of trachea in cockroach are called taenidia.
Statement II: In cockroach, inspiration is a passive process.

Statement I:Natural aging of a lake by enrichment of nutrients is known as eutrophication. Statement II:Increase of concentration of pollutant at successive trophic levels in aquatic food chain is known as biomagnification.

Match the following \begin{table}[ht] \centering \renewcommand{\arraystretch}{0.6} \begin{tabular}{|c|c|} \hline List - 1 & List - 2
\hline A. UV- B rays & I. Electrostatic precipitator
B. Greenhouse gases & II. Snow blindness
C. Particulates & III. Eutrophication
D. Automobile emissions & IV. Global warming
& V. Catalytic converters
\hline \end{tabular} \end{table} The correct answer is

Assertion (A) : Eggs of \textit{Ascaris are described as mamillated eggs.} Reason (R) : Each egg is surrounded by a protein coat with rippled surface.

Match the following: \renewcommand{\arraystretch}{1.3} \begin{table}[h!] \centering \setlength{\tabcolsep}{10pt} \begin{tabular}{|c|c|c|} \hline Scientific Name & Matching & Common Name
\hline Hemidactylus & I & Kangaroo
Ptyas & II & Wall lizard
Columba & III & Flying fox
Macropus & IV & Pigeon
& V & Rat snake
\hline \end{tabular} \end{table} The correct answer is

Parazoans exhibit:

Study the following and pick up the correct combinations: \renewcommand{\arraystretch}{1.3} \begin{table}[h!] \centering \setlength{\tabcolsep}{10pt} \begin{tabular}{|c|c|c|c|} \hline S. No & Phylum & Characteristic Feature & Example
\hline I & Porifera & Choanocytes & Physalia
II & Cnidaria & Stinging cells & Euspenigia
III & Ctenophora & Lasso cells & Pleurobrachia
IV & Platyhelminthes ) & Flame cells & Fasciola
\hline \end{tabular} \end{table}

Botryoidal tissue in body cavity is characteristic of:

Assertion (A): Pancreas is a merocrine gland.
Reason (R): The apical parts of the pancreatic cells are pinched off along with the secretory product.

In Morgan’s experiments on Drosophila linkage, the percentage of white-eyed, yellow body recombinants and the percentage of white-eyed, miniature winged recombinants in F\textsubscript{2 generation respectively:}