List of practice Questions

Draw a schematic diagram of an antibody molecule and label any 4 parts. Mention their chemical nature. Name the cells which produce them.

Name the human body organ affected by the consumption of these drugs.

How are such drugs consumed?

Name the group of drugs whose skeletal molecule is shown below:
\begin{figure}[h!] \centering \includegraphics[width=0.8\textwidth]{Screenshot 2025-01-16 122650.png} \caption{Drug} \end{figure}

Name the (i) ape-like (ii) man-like primates that existed 1.5 million years ago.

Whose skulls ‘A’, ‘B’, and ‘C’ are shown below? Which of the two are more similar to each other?
\begin{figure}[h!] \centering \includegraphics[width=0.8\textwidth]{Screenshot 2025-01-16 122426.png} \caption{Skull} \end{figure}

Anaerobic sludge digester

How has the use of \textit{Agrobacterium as vector helped in controlling \textit{Meloidogyne incognita} infestation in tobacco plants? Explain in correct sequence.}

Draw a schematic diagram of the \textit{E.coli vector pBR 322 and mark the following in it:}
(a) ori
(b) rop
(c) ampicillin resistant gene
(d) tetracycline-resistant gene
(e) restriction site Bam HI
(f) restriction site EcoRI

Explain brood parasitism with the help of a suitable example.

Differentiate between grazing food chain and detritus food chain.

Name any two hotspots in India.

Biodiversity hotspots cover less than 2\% of Earth’s land area. Strict protection of these areas can reduce the rate of ongoing extinctions. Explain.

Why is an early detection of these diseases essential?

Mention any two ways by which HIV and Hepatitis-B can be transmitted to a healthy person.

Study the graph given below that represents the changes in the thickening of the uterine wall in women ‘X’ and women ‘Y’ over a period of one month: \textit{(Refer to the provided graph.)}
What does the graph with respect to woman ‘X’ and woman ‘Y’ indicate? Give a suitable reason.

Explain the improvement in the quality of the milk produced by it.

Name the first developed transgenic cow.

Assertion (A): Patents are granted by the government to an inventor.
Reason (R): Patents prevent others from commercial use of an invention.

Assertion (A): Some aquatic ecosystems have inverted biomass pyramids.
Reason (R): More energy is required by the organisms occupying higher trophic levels.

Assertion (A): A given fig species can be pollinated only by its partner wasp.
Reason (R): The wasp pollinates the fig inflorescence while searching for suitable egg-laying sites.

Assertion (A): Plasmids are autonomously replicating circular extra-chromosomal DNA.
Reason (R): Plasmids are usually present in eukaryotic cells.

The ‘molecular scissors’ fall in the category of:

ELISA technique is based on the principle of: