CUET PG Botany Question Paper 2025 is available here for download. NTA is conducting CUET PG 2025 Botany on 13 March 2025 in shift 1 from 9.00 PM - 10.30 PM. As per the revised exam pattern, candidates get 90 minutes to solve 75 MCQs in the CUET PG 2025 Botany question paper. The CUET PG 2025 Botany exam is expected to be of moderate to high difficulty, based on past trends and syllabus coverage.

CUET PG Botany Question Paper 2025 PDF Download

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CUET PG 2025 Botany Questions with Solutions

Question 1.

What is the botanical name of Methi (Fenugreek)?

View Solution Fenugreek (Methi) is a herb commonly used in cooking and has a long history of medicinal use. The botanical name of Methi is Trigonella foenum-graecum. The seeds of fenugreek are rich in protein, fiber, and antioxidants.
Fenugreek is often used to manage blood sugar levels and promote digestion, and it is widely recognized for its medicinal properties.
Question 2.
 White jute is obtained from which plant?
View Solution White jute, known for its superior quality, is obtained from the plant Corchorus capsularis. It is widely used to produce textiles, ropes, and bags. This plant thrives in tropical climates and is an important cash crop in some regions.
Jute is an eco-friendly alternative to synthetic fibers and is biodegradable, making it an environmentally sustainable choice for textiles.

Question 3.

 Why do purple and blue colors appear in plants?

View Solution Purple and blue colors in plants are mainly due to the presence of anthocyanins. These water-soluble pigments reflect blue and purple wavelengths and absorb red and blue-green light. They are influenced by the pH and concentration of anthocyanins in the plant tissues.
Anthocyanins protect plants from UV radiation, pests, and environmental stress and are known for their antioxidant properties.

Question 4.

What elements are found in xylem?

View Solution The xylem is composed of tracheids, vessels, xylem parenchyma, and xylem fibers. These elements work together to conduct water and nutrients from the roots to the rest of the plant and provide structural support to the plant.
Xylem is essential for water transport, especially during periods of drought, ensuring plant hydration and nutrient uptake.

Question 5.

Paracytic stomata are found in which plant family?

View Solution Paracytic stomata, characterized by two subsidiary cells parallel to the stoma, are typically found in plants of the Rubiaceae family. This configuration aids in efficient gas exchange and regulates water loss.
Paracytic stomata are an adaptation in plants with high transpiration rates, promoting effective water and gas exchange.
Question 6.
 Phosphorus represents what in plants?
View Solution Phosphorus is a vital macronutrient in plants, essential for energy transfer, photosynthesis, and the formation of nucleic acids and cell membranes. It supports root development and flowering.
Phosphorus deficiency leads to stunted growth, poor root development, and delayed flowering in plants.

Question 7.

Ethylene is the precursor of which compound?

View Solution Ethylene, a plant hormone, is the precursor to ethylene oxide. This compound is used in industrial processes like sterilization and the production of ethylene glycol.
Ethylene also plays a role in fruit ripening and plant stress responses, in addition to its industrial applications.

Question 8.

 Who conducted the bacterial transformation experiment?

View Solution The bacterial transformation experiment was conducted by Frederick Griffith in 1928. His work demonstrated that bacteria could transfer genetic material, laying the groundwork for the discovery of DNA as the hereditary material.
Griffith's work was pivotal in understanding genetic inheritance and paved the way for later discoveries in molecular biology.

Question 9.

 Which enzyme adds the RNA primer during DNA replication?

View Solution The enzyme that adds the RNA primer during DNA replication is primase. The RNA primer is essential for initiating DNA replication by providing a starting point for DNA polymerase.
Primase is crucial for DNA replication as it ensures that the DNA polymerase can begin synthesizing the new strand.
Question 10.
What is the interface between G1 and S phase called?
View Solution The interface between the G1 and S phases is called the Restriction point. The restriction point is a checkpoint in the cell cycle that determines whether a cell will proceed into the S phase (DNA synthesis phase) or exit the cell cycle and enter the G0 phase (a resting phase). This point is a critical control mechanism in the regulation of the cell cycle, particularly in response to environmental signals such as growth factors and nutrients.
The restriction point ensures that a cell only proceeds to DNA replication when conditions are favorable, maintaining genomic integrity.

Question 11.

Number of chromosomes in endosperm?

View Solution The number of chromosomes in the endosperm is triploid (3n). The endosperm is formed during double fertilization in angiosperms. One sperm cell fertilizes the egg cell to form the zygote (diploid, 2n), and the other sperm cell fertilizes the central cell, which contains two polar nuclei, to form the endosperm (triploid, 3n). The triploid endosperm provides nourishment to the developing embryo.
The triploid nature of the endosperm ensures that it contains a balanced set of genetic material for its role in nutrient storage for the seed.