SSC Selection Post 2025 PYQ — Question 7

SSC Selection Post - Graduation Level - 26th July 2025 - Shift 3 • General Awareness • Q7

The first peptide to be produced after wounding in the tomato plant is __________.

Show answer & explanation

Correct answer: A

Explanation

Correct Answer:

Systemin

Explanation:

In tomato plants, the first peptide produced after wounding is Systemin. It is a signaling peptide that triggers defense responses in plants. When the plant is damaged, systemin activates the production of defense-related compounds through the jasmonic acid pathway, helping the plant resist further attack by pests or pathogens.

Key Points:

Systemin is the first wound-induced peptide in tomato.
It acts as a signaling molecule in plant defense.
It activates the jasmonic acid pathway.
It helps in protecting the plant from insect and pathogen attack.

Additional Facts:

Systemin was first discovered in tomato plants.
It is part of the plant’s systemic acquired resistance mechanism.
It plays a key role in long-distance signaling after injury.

Important Questions:

Q1: What is Systemin?
Ans: A wound-induced signaling peptide in plants

Q2: Which pathway does Systemin activate?
Ans: Jasmonic acid pathway

Q3: What is the role of Systemin?
Ans: Plant defense signaling after wounding