Chapter 6-Nutrition
6.1 Types of Nutrition
1)Complete the following sentences on nutrition.
(a) Nutrition
is the process by which living organisms obtain _______ which require by both supplying ______ ,growth,replacing damaged tissues and maintaining physical
health.
(b) Autotrophic
nutrition refers to the type of nutrition where living organisms _______
synthesise complex organic compunds from simple inorganic substances using
______ or chemical energy.
(c) __________________
are organisms that synthesise ______ compunds (food) from simple inorganic
compounds by using energy released from oxidising minerals,like
nitrates,____________,and sulphides.For example,________ bacteria use energy
released from the oxidation of hydrogen sulphide to form _________.
(d) Photosynthetic
autotrophs are organisms that synthesise organic compunds (food) from inorganic
compunds of water and _______________,using ____________ as their source of
energy.
(e) Hetetrophic
nutrition is the type of nutrition where living organisms obtain energy through
the intake and ________ of organic matter from other __________.
(f)
Holozoic nutrition is the type of
nutrition where living organisms _________complex organic matter and then
________ it to obtain simple substances and energy.
(g) Saprophytism
refers to the process by which living organisms ______ on dead or _________
organic matter by extracellular digestion.
(h) Paratism
is a close association between _____ organisms where one of them lives in or on
the other to obtain ______ from the host.
Answers:-
(a)nutrients,energy
(b)
synthesise,light
(c)Chemosynthetic
autotrophs,organic,carbon
dioxide,sulphur,carbohydrates
(d)carbon
dioxide,sunlight
(e)digestion,organisms
(f)ingest,digest
(g)feed,decaying
(h)two,nutrients