WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent

Which type of the following cells is thin-walled and living at maturity?

Biology
JAMB 1990

Which type of the following cells is thin-walled and living at maturity?

  • A. Collenchyma
  • B. Sieve tube
  • C. xylem vessel
  • D. sclerenchyma
Post UTME Past Questions Agent
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Correct Answer: Option B
Explanation

Collenchyma cells are not thin-walled at maturity. While they are living at maturity, collenchyma cells have thickened, unevenly thickened cell walls. These thickened walls are a key characteristic that distinguishes them from thin-walled parenchyma cells, which are also living at maturity. 

Sieve tube are thin-walled and living at maturity. While they are alive, they lack a nucleus and other organelles, relying on companion cells for support and other functions.

Also,xylem vessel are not thin-walled or living at maturity. In fact, they are dead cells with thick, lignified walls that form a continuous tube for water transport.  

Sclerenchyma cells are not thin-walled and living at maturity. They are characterized by thick, lignified cell walls and are dead at maturity.


Report an Error Ask A Question Download App
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent

Contributions ({{ comment_count }})

Please wait...

{{ settings.no_comment_msg ? settings.no_comment_msg : 'There are no comments' }}

Quick Questions

Post your Contribution

Please don't post or ask to join a "Group" or "Whatsapp Group" as a comment. It will be deleted. To join or start a group, please click here

{{ quote.posted_by.display_name }}
{{ settings.form_textarea_description }}
 
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Post UTME Past Questions Agent
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Your School's Whatsapp Group - Join Us now
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Your School's Whatsapp Group - Join Us now
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now