Almost all producers obtain energy from sunlight. Most producers on Earth use sunlight as their energy source. Photosyn- thesis is the process by which plants and some protists, such as green algae, use energy from the Sun to make sugars. Plants use these sugars as encrgy for cellular respiration. Not all producers rely on the Sun for energy. In 1977 scientists first visited deep-sea vents on the floor of the ocean. They were very sur- prised to find many different organisms living in an ocean floor ecosys- tem, far from the reach of sunlight. The producers in this ocean floor ecosystem are prokaryotes that make their own food, using chemicals as an energy source, not the Sun. This process is called chemosynthesis (KEE-moh-SIHN-thih-sihs). Chemosynthetic organisms also live in hot springs. INSTANT Underline two places that chemosynthetic organisms live. REPLAY 13.3 Vocabulary Check Mark It Up Go back and highlight heterotroph producer autotroph each sentence that chemosynthesis has a vocabulary word in bold. consumer Fill in the blanks with the correct term from the list above. 1. Which two words describe an organism that eats other organisms as

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Almost all producers obtain energy
from sunlight.
Most producers on Earth use sunlight as their energy source. Photosyn-
thesis is the process by which plants and some protists, such as green
algae, use energy from the Sun to make sugars. Plants use these sugars
as energy for cellular respiration.
Not all producers rely on the Sun for energy. In 1977 scientists first
visited deep-sea vents on the floor of the ocean. They were very sur-
prised to find many different organisms living in an ocean floor ecosys-
tem, far from the reach of sunlight.
The producers in this ocean floor ecosystem are prokaryotes that
make their own food, using chemicals as an energy source, not the Sun.
This process is called chemosynthesis (KEE-moh-SIHN-thih-sihs).
Chemosynthetic organisms also live in hot springs.
INSTANT
Underline two places that chemosynthetic organisms live.
REPLAY
13.3 Vocabulary Check
Mark It Up
Go back and highlight
producer
heterotroph
each sentence that
autotroph
chemosynthesis
has a vocabulary
word in bold.
consumer
Fill in the blanks with the correct term from the list above.
1. Which two words describe an organism that eats other organisms as
food?
2. Which two words describe an organism that makes its own food?
13.37 The Big Picture
3. List two different energy sources for producers. Circle the one that is
the source for most producers.
Transcribed Image Text:Almost all producers obtain energy from sunlight. Most producers on Earth use sunlight as their energy source. Photosyn- thesis is the process by which plants and some protists, such as green algae, use energy from the Sun to make sugars. Plants use these sugars as energy for cellular respiration. Not all producers rely on the Sun for energy. In 1977 scientists first visited deep-sea vents on the floor of the ocean. They were very sur- prised to find many different organisms living in an ocean floor ecosys- tem, far from the reach of sunlight. The producers in this ocean floor ecosystem are prokaryotes that make their own food, using chemicals as an energy source, not the Sun. This process is called chemosynthesis (KEE-moh-SIHN-thih-sihs). Chemosynthetic organisms also live in hot springs. INSTANT Underline two places that chemosynthetic organisms live. REPLAY 13.3 Vocabulary Check Mark It Up Go back and highlight producer heterotroph each sentence that autotroph chemosynthesis has a vocabulary word in bold. consumer Fill in the blanks with the correct term from the list above. 1. Which two words describe an organism that eats other organisms as food? 2. Which two words describe an organism that makes its own food? 13.37 The Big Picture 3. List two different energy sources for producers. Circle the one that is the source for most producers.
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