MYTUTOR SUBJECT ANSWERS

5404 views

Why do energy and biomass decrease at successive stages of the foodchain?

Energy is transferred throughout the food chain as animals at lower trophic levels are consumed by those at higher trophic levels. In every living organism, energy is taken in as food. But when one organism eats another, only around 10% of this energy is transferred to the higher organism. So…where does this surplus energy go?

There are three main ways in which energy is output in every organism. These are:

RESPIRATION to generate energy for movement and organ functioning

EXCRETION as faeces, urine or gas

TISSUE (biomass) generation

When organisms are consumed in the foodchain, only energy stored as TISSUE is transferred. Therefore, at each stage of the food chain, less energy and biomass is transferred between organisms than at the previous trophic level.   

Katie H. A Level Geography tutor, GCSE Maths tutor, GCSE Biology tuto...

2 years ago

Answered by Katie, a GCSE Biology tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

383 SUBJECT SPECIALISTS

PremiumJames L. A Level Biology tutor, A Level Chemistry tutor, GCSE Biology...
£24 /hr

James L.

Degree: Medical Sciences (Bachelors) - Exeter University

Subjects offered:Biology, Science+ 4 more

Biology
Science
Physics
Maths
Chemistry
-Personal Statements-

“Hi, I'm James, a Biology Masters graduate. I'm really passionate about science, and I hope i can share some of my interest with you!”

£22 /hr

Ed W.

Degree: Medicine (Bachelors) - Edinburgh University

Subjects offered:Biology, Maths+ 3 more

Biology
Maths
Further Mathematics
Chemistry
-Medical School Preparation-

“Hi! I'm Ed and I'm currently studying Medicine at the University of Edinburgh. I tutor at GCSE and A Level forBiology, Chemistry and Maths, and at GCSE level forFurther Maths. These are subjects I'm very comfortable in and enjoy. With ...”

£22 /hr

Marie B.

Degree: Neuroscience (Doctorate) - University College London University

Subjects offered:Biology, Spanish+ 5 more

Biology
Spanish
Science
Human Biology
German
Chemistry
-Personal Statements-

“I belive practice makes perfect! Ultimatley I like to make science fun and interesting :)”

About the author

Katie H.

Currently unavailable: until 04/11/2015

Degree: Geography (Bachelors) - Oxford, St Catherine's College University

Subjects offered:Biology, Maths+ 2 more

Biology
Maths
Geography
-Personal Statements-

“Recent Oxford graduate with specialism in Geography and university applications. ”

MyTutor guarantee

You may also like...

Posts by Katie

What are 'Milankovitch cycles'?

Why do energy and biomass decrease at successive stages of the foodchain?

Other GCSE Biology questions

How do we develop immunity?

What is an oxygen debt?

How does a vaccine work?

Describe how blood vessels are able to assist in the control of body temperature.

View GCSE Biology tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok