BIOLOGY 10 TH STD WHAT IS NUTRITION? TYPES OF NUTRITION?

2. >WHAT IS NUTRITION
>TYPES OF NUTRITION

3. 1. INTRODUCTION
MATCH THE ANIMALS / HUMANS AND THEIR FOOD
(A) (B) (C) (D)
(1) (2) (3) (4)
ANSWERS: A-2, B-3, C-4, D-1,

4. “Nutrition is the process
of taking in food and
converting it into energy
and other vital nutrients
required for life.”

5. There are two types of
nutrition among living
organisms, namely:
· Autotrophic mode
· Heterotrophic mode

7. In the autotrophic mode, organisms use simple
inorganic matters like water and carbon dioxide in the
presence of light and chlorophyll to synthesize food on
their own. In other words, the process of
photosynthesis is used to convert light energy into food
such as glucose. Such organisms are called autotrophs.
Plants, algae, and bacteria are some examples where
is observed.
The process of photosynthesis can be explained in
three stages:

10. The organisms which cannot produce food on their
own and depend on other sources/organisms .
Heterotrophs can be of many varieties depending
upon their environment and adaptations. Some
may eat plants (herbivores) and others eat animals
(carnivores) while few eat both (omnivores). Thus
we can say survival of heterotrophs depends
directly or indirectly on plants.
This mode of nutrition is known as
Ex-Fungi and all the animals including humans are
heterotrophs.

11. Heterotrophs are classified into different categories based on
their mode of nutrition. There are 3 types of heterotrophs are
they are
Parasites are an incredibly varied group of organisms that live within host
cells. They are smaller than their host organism and reproduce faster by
causing more damage to the host. They receive all sorts of benefits like food
and shelter from the host.
For example- Tapeworms that are flat, segmented worms live in the
intestines of animals by absorbing the host’s nutrients.

12. ² Saprophytes are the
living organisms that
live and feed on dead
and decaying
organisms.
ex-
Yeast,Penicillium,Mush
room.etc

13. Nutrition is the process of nutrition that takes place in
organisms that take solid or liquid food inside their body.
Amoeba follows holozoic nutrition.
Ø The process of nutrition in amoeba is as follows:

14. The process the food is taken inside through the
mouth and broken down by teeth and initial digestion takes
place in the mouth by saliva.
The process in which food is digested by using
few enzymes and are used by the cells for producing energy.
The process in which cells use the energy from
the digested food and helps in building tissues in our body.
The process in which digested food moves into
the cells of the body.
The process in which undigested food is removed
out from the body through excretion.

16. Q1) In amoeba, food is digested in the:
(a) food vacuole
(b) mitochondria
(c) pseudopodia
(d) chloroplast

17. 2.Which of the following are energy foods?
(a) Carbohydrates and fats
(b) Proteins and mineral salts
(c) Vitamins and minerals
(d) Water and roughage

18. 3.In which mode of nutrition an organism de-rives its
food from the body of another living organism
without killing it?
(a) Saprotrophic nutrition
(b) Parasitic nutrition
(c) Holozoic nutrition
(d) Autotrophic nutrition

19. The site of photosynthesis in the cells of a leaf
is
(a) chloroplast
(b) mitochondria
(c) cytoplasm
(d) protoplasm

20. 4.In amoeba, food is digested in
the:
(a) food vacuole
(b) mitochondria
(c) pseudopodia
(d) chloroplast

21. Q2- Select the correct statement –
A) Heterotrophs make their food
B) Heterotrophs utilize solar energy to make food
C) Heterotrophs do not make their own food
D) Heterotrophs are capable of converting carbon
dioxide and water into carbohydrates

22. The opening and closing of stomatal pore depends
upon ___.
A) Oxygen
B) Guard Cells
C) Concentration of carbon dioxide in stomata
D) Temperature

23. The cellular energy reserves in autotrophs
are____.
A) Glycogen
B) Starch
C) Protein
D) Fatty acids

24. The autotrophs require ____.
A) CO2 and water
B) Chlorophyll
C) Sunlight
D) All OF THESE