Summary

Summary of Biotic Factors in Ecosystems (Biology)

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Course
Life Sciences

Institution
10th Grade

This document describes the biotic factors. Along with different types of food pyramids. Also details Aquatic Ecosystem along with different types of rivers and the ecosystems they create. Detailing the different animal and plant adaptions they develope.

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Uploaded on February 23, 2023
Number of pages 3
Written in 2022/2023
Type Summary

biolgy
biotic
abiotic
enviroment
ecosystem
ecology
adaptations
living
narine ecosystem
phytoplankton
food pyramid
detrivore

Institution 10th Grade
Course Life Sciences
Schooljaar 201

Biotic Factors

- Producers
➔ Also called autotrophs, the usual way producers make energy is through photosynthesis
- Primary Consumers
➔ Primary consumers is an organism that feeds on primary producers (Herbivore)
- Secondary Consumers
➔ Are organisms that eat primary consumers for energy. Secondary consumers can either be
carnivores or omnivores
- Tertiary Consumers
➔ An animal that obtains nutrition by eating primary consumers and secondary consumers.
Usually they are carnivores, although they can be omnivores.
- Detritivore
➔ They are organisms that eat dead or decaying plants or animals as food. Detritivore include
microorganisms such as bacteria and larger organisms such as fungi, insects, worms, and some
crustaceans.
- an ecological pyramid is a pyramid-shaped diagram representing quantitatively the number of
organisms, energy relationships and biomass of an ecosystem
- three types of pyramids
1. Pyramid of Numbers
➔ Used to show the number of organisms at each stage of a food chain

2. Pyramid of Biomass
➔ The mass of living things at each stage
of the food chain
➔ Measured in dry mass
➔ The six of each box represent the mass
of each kind of organism
➔ Always makes a pyramid shape
3. Pyramid of Energy
➔
- 90% of energy is lost between trophic levels
➔ growth and reproduction
➔ not digested or assimilated
➔ excreted
➔ lost as heat from respiration

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