ODWS icon

The Open Door Web Site
HOMEPAGE CHEMISTRY PHYSICS ELECTRONICS HISTORY HISTORY OF SCI & TECH MATH STUDIES LEARNING FRENCH STUDY GUIDE  PHOTO GALLERY
BIOLOGY HOMEPAGE  IB BIOLOGY WEB TOPIC CHAPTERS FACTS & FIGURES LABORATORY WORK QUESTIONS & QUIZZES ECOLOGY CLUB PLAYS

 

Reference chapter

Question 1
HTML version
PDF Version

 

 

 

 

ASEXUAL REPRODUCTION

Custom Search

Question 1

 

Single-celled organisms, such as Paramecium, can reproduce very quickly by asexual reproduction. A Paramecium can divide in two, grow and be ready to divide again in 8 hours.

Paramecium graph

Answer the following questions:

(a) What must a Paramecium do if it is to grow in size before it can divide?

(b) One Paramecium is placed in a jar of pond water. If the conditions are perfect it will divide in two every 8 hours. How many Paramecia would be present in the jar after
(i) one day (24h) and
(ii) one week?

In fact the numbers of Paramecia in the jar will probably follow the pattern shown in the graph below. After one week are there: more Paramecia or less Paramecia than you calculated in part (b)?

Graph 2

(c) Can you explain why there should be a difference between your calculations and this graph?

 

The Open Door Web Site is non-profit making. Your donations help towards the cost of maintaining this free service on-line.

Donate to the Open Door Web Site using PayPal

SITE MAP
WHAT'S NEW?
ABOUT

PRIVACY

COPYRIGHT

SPONSORSHIP

DONATIONS

ADVERTISING

© The Open Door Team 2017
Any questions or problems regarding this site should be addressed to the webmaster

© Paul Billiet and Shirley Burchill 2017

Hosted By
Web Hosting by HostCentric


SiteLock