TLS 
Triyambak Life Sciences

Nurturing Life Sciences

TLS Online

Nurturing Life Sciences

Store
Login

Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 48279
TLS Online TPP Program

#Question id: 5561


In sea urchins, the "fast block" and the longer lasting "slow block" to polyspermy, respectively, are ________.

#SCPH28 | Zoology
  1. the acrosomal reaction and the formation of egg white

  2. the cortical reaction and the formation of yolk protein

  3. the jelly coat of the egg and the vitelline membrane

  4. membrane depolarization and the cortical reaction


Answer:- Option(s): 4


To access the video solutions, Please subscribe TPP program.

Subscribe Now 
More Questions
TLS Online TPP Program

#Question id: 10402

#SCPH05 I Biotechnology

Photomorphogenic responses of phytochrome inhibited by

TLS Online TPP Program

#Question id: 10402

#SCPH06 I Botany

Photomorphogenic responses of phytochrome inhibited by

TLS Online TPP Program

#Question id: 10403

#I Life Science/ Life Sciences Group – I-V

PIFs regulate various aspects of phytochrome-mediated photomorphogenesis, which of the following is incorrect?

TLS Online TPP Program

#Question id: 10403

#SCPH05 I Biotechnology

PIFs regulate various aspects of phytochrome-mediated photomorphogenesis, which of the following is incorrect?

TLS Online TPP Program

#Question id: 10403

#SCPH06 I Botany

PIFs regulate various aspects of phytochrome-mediated photomorphogenesis, which of the following is incorrect?

TLS Online TPP Program

#Question id: 10404

#I Life Science/ Life Sciences Group – I-V

PIFs promote etiolated development in the dark phenomenon known as

TLS Triyambak Life Sciences Nurturing Life Sciences
TLS Android APP TLS IOS APP

Company

  • About us
  • Careers
  • Terms of service
  • Privacy policy

Help & Support

  • User Guidelines
  • Refund Policy

Products

  • TLS APP
  • TPP APP

Contact Us

117/429-4 Q Block, behind Hotel DNG Grand, Sharda Nagar, Kanpur,
Uttar Pradesh 208025
India
Phone: +91 9919149001, +917007912133
Email: info@triyambak.org

© 2025 Copyright Triyambak Life Sciences Pvt Ltd. All Rights Reserved