List of practice Questions

"Despite the mixed record of democratic experiences, the people of South Asian countries share the aspiration for democracy." Justify the statement with two suitable arguments.

For the function \( f(x, y) = x^3 + y^3 - 3x - 12y + 12 \), which of the following are correct:
A. minima at (1,2)
B. maxima at (-1,-2)
C. neither a maxima nor a minima at (1,-2) and (-1,2)
D. the saddle points are (-1,2) and (1,-2)

Given table 'StudAtt' with structure as (Rno, Attdate, Attendance). Identify the suitable command to add a primary key to the table after creation.
Note: We want to make both Rno and Attdate columns as primary key.

Choose the plants from the given list which have hypogynous flowers.
Mustard, Cucumber, Brinjal, Plum, Rose, Peach, Guava, Sunflower, and China Rose.

Methanogens are:

Assertion (A): Arthropods are schizocoelomates
Reason (R): Coelom in arthropods is formed by splitting of mesoderm

Which one of the following is a liquid tumor?

Arrange the following events that occur during prophase-I of Meiosis - I
A) Formation of synaptonemal complex
B) Repulsion between Homologous chromosomes
C) Formation of Bivalents
D) Exchange of Genetic material between non-sister chromatids of Homologous chromosomes
E) Terminalization
The correct sequence is
Options :

Choose the correct statements among the following
I. Conjugation is a conservative process because donor bacteria donot retain copy of genetic material.
II. In Bacterial transformation, genetic information is expressed in recipient cell.
III. Salmonella typhimurium is a transformation bacteria.
IV. Biologically active toxic pollutant can be detected by Biosensors.

Assertion (A): In prokaryotes the DNA in the nucleoid is organized in large loops held by proteins.
Reason (R): In prokaryotes, negatively charged DNA molecules are held with positively charged proteins.
Identify the correct option from the following:

Study the following statements regarding respiratory system of cockroach and identify the correct option:
Statement-I: Cockroach possesses 10 pairs of spiracles.
Statement-II: The spiracles of cockroach are holopneustic.

Match the following: \begin{tabular}{|c|l|l|} \hline List-I (Disorder) & & List-II (Character)
\hline A) & Myasthenia gravis & IV) Auto-immune disorder
B) & Muscular dystrophy & III) Progressive muscle degeneration
C) & Gout & I) Urate crystal deposits in joints
D) & Osteoporosis & II) Low bone density, fractures
\hline \end{tabular}

Assertion (A): Trichomes help in preventing water loss due to transpiration.
Reason (R): The specialized cells near the guard cells together constitute stomatal apparatus.

Choose the correct statements:

I. In exothermic reactions, ‘P’ is at a lower level than ‘S’
II. Enzyme activity is affected by temperature due to changes in tertiary structure
III. Low temperature denatures the protein
IV. Ligases remove groups from substrate

Which of the following is not an alien species in India?