Pheromone

Pheromones are chemical substances which are secreted on the outside by an individual, and received by another individual of the same species.

Pheromone

About Pheromone:

  • Pheromones are chemical substances which are secreted on the outside by an individual, and received by another individual of the same species. 
  • These are present in all bodily secretions, and especially in the axillary sweat — can be detected by the olfactory system.
  • Pheromones are ecto-hormones, meaning they are secreted outside the body.
  • Types of Pheromones
    • Releaser pheromones: They work right away and elicit a specific response from the other person.
    • Signaler pheromones: They give information about the person who releases them. For example, they help a mother tell her own baby apart from other babies.
    • Modulator pheromones: They affect mood and emotions. 
    • Primer pheromones affect hormones, for example during pregnancy or menstrual cycles.
  • Animals, with their heightened senses and vomeronasal organ are known to secrete pheromones to trigger many kinds of behaviours like raising an alarm, signalling a food trail, warning another animal to back off, and bonding with an offspring.
  • Pheromones are also used by some fungi, slime molds, and algae as attractants in reproduction; organisms of complementary reproductive cell types grow or move toward each other.

Q1: What are Hormones?

These are chemical messengers that coordinate different functions in your body. Several glands, organs and tissues make and release hormones, many of which make up your endocrine system.

Source: Helping Indian Farmers Fight Pests: Bringing A Sustainable Pest-Control Pheromone Dispenser to Market

Latest UPSC Exam 2025 Updates

Last updated on July, 2025

UPSC Notification 2025 was released on 22nd January 2025.

UPSC Prelims Result 2025 is out now for the CSE held on 25 May 2025.

UPSC Prelims Question Paper 2025 and Unofficial Prelims Answer Key 2025  are available now.

UPSC Calendar 2026 is released on 15th May, 2025.

→ The UPSC Vacancy 2025 were released 1129, out of which 979 were for UPSC CSE and remaining 150 are for UPSC IFoS.

UPSC Mains 2025 will be conducted on 22nd August 2025.

UPSC Prelims 2026 will be conducted on 24th May, 2026 & UPSC Mains 2026 will be conducted on 21st August 2026.

→ The UPSC Selection Process is of 3 stages-Prelims, Mains and Interview.

UPSC Result 2024 is released with latest UPSC Marksheet 2024. Check Now!

UPSC Toppers List 2024 is released now. Shakti Dubey is UPSC AIR 1 2024 Topper.

→ Also check Best IAS Coaching in Delhi

Vajiram Editor
Vajiram Editor
UPSC GS Course 2026
UPSC GS Course 2026
₹1,75,000
Enroll Now
GS Foundation Course 2 Yrs
GS Foundation Course 2 Yrs
₹2,45,000
Enroll Now
Prelims PowerupTest Series
Prelims PowerupTest Series
₹13000
Enroll Now
UPSC Mains Test Series
UPSC Mains Test Series
₹16000
Enroll Now
UPSC Mentorship Program
UPSC Mentorship Program
₹85000
Enroll Now
Enquire Now