List of practice Questions

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.

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

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

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

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:

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:}

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

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}