EN Plants_ Nutrition, Photosynthesis and Respiration by Slidesgo.pptx

1. Plants:
Nutrition,
Photosynthesis
and Respiration

2. Table of contents
01
Introduction
02
Parts of the plant. The root
03
Parts of the plant. The stem
04
Parts of the plant. Leaves
05
Plant nutrition: photosynthesis
06
Plant respiration
07
Goodbye

3. 01
Introduction

4. Introduction
Plants are multicellular living
beings. They perform the three
vital functions:
● Nutrition
● Interaction
● Reproduction
The differences with the rest of
living beings are two:
No movement
They make their own food

5. 02
Parts of the plant.
The root

6. Parts of the plant. The root
The root. It is the
organ that lies below
the ground and lacks
leaves
It has two main functions
01 Holding the plant to the ground
02 Absorbing water and mineral salts in it
Curiosity of the roots
The roots can store nutrients so that later the
stem and leaves can grow. By storing "food" they
thicken their roots (they become "fat") and, at
the same time, they are very appetizing for
humans
Examples of these edible roots are: carrots,
beets, turnips, onions, garlic, celery.... Yummy!

7. Parts of the plant. The root
The root has several parts
A thicker main part
It is the axis from which the secondary ones emerge
Secondary roots are branches of the main root
The purpose of the main root and secondary roots is to hold the plant
to the substratum and to transport water and nutrients through the
stem to the leaves, but they are not the ones that absorb it
Root hairs
They are responsible for the absorption of water and nutrients so that
the plant can perform the function of nutrition
Root cap
It is the part that protects the root in the growing zone and is usually
found in the lower part of the plant

8. 03
Parts of the
plant. The
stem

9. Parts of the plant. The stem
The stem. The
part of the plant
that is responsible
for holding and
transporting water
and other mineral
substances to all
parts of the plant
Types of stems according to their hardness
Herbaceous stems are thin, flexible and
usually green in color. Herbs have
herbaceous stems
Woody stems are hard, stiff and usually
brown in color. Trees have a woody stem
called a trunk and their branches usually
grow at a certain height from the ground.
Shrubs also have a woody stem called a
trunk but it is shorter and their branches
are usually close to the ground
Like the root, it usually divides into secondary stems or branches, from
which the leaves, flowers and fruits arise

10. 04
Parts of the
plant. Leaves

11. Parts of the plants. The leaves
Leaves. They arise
from the stem or
branches. They
are responsible for
photosynthesis,
respiration and
plant transpiration
The colors of the leaves
They have various colors, depending on the
pigment they contain. Those with the most
chlorophyll are green
Leaf shapes
There are many types: lanceolate, elliptical,
linear, obovate, oblong, spathulate, rhomboid,
reniform, and the list goes on
Elliptical Linear Obovate

12. Parts of the plant. The leaves
The leaves have two parts
The lamina
The upper part is the adaxial face and the
lower part is the abaxial face. At the center
there is a midrib with branches called veins
The adaxial face
The abaxial face
Veins
The petiole
Part where it joins the stem (there are some
that lack this part)

13. 05
Plant nutrition:
photosynthesis

14. Plant nutrition: photosynthesis
Plants are the only living things that produce their own food. They are called autotrophs. This process is called
photosynthesis and for this they need water, mineral salts, carbon dioxide and sunlight
01 In the root, through the absorbent hairs, the plant absorbs water and
mineral salts from the soil
02 The mixture of water and mineral salts is transport by the xylem
tissue until it reaches the leaves

15. Plant nutrition: photosynthesis
Plants are the only living things that produce their own food. They are called autotrophs. This process is called
photosynthesis and for this they need water, mineral salts, carbon dioxide and sunlight
03 Leaves take carbon dioxide from the air. The water and mineral salts
mixture and carbon dioxide, with the help of solar energy from light, mix
to form the plant's food
04 Finally, the plant's food is distributed throughout the plant by the
phloem tissue

16. 06 Plant
respiration

17. Plant respiration
Plants, like all living organisms, breathe
During photosynthesis they take in carbon dioxide
and expel oxygen. This happens during the day, which
is the oxygen that the rest of the living beings
consume! That's why they are called "the lungs of the
planet"
But they also breathe (during the day and night) and
consume oxygen and expel carbon dioxide. Don't
panic! Their oxygen consumption is minimal. They are
still our lungs
Carbon
dioxide
Oxygen

18. 07
Goodbye

19. Goodbye
We hope you have understood the importance we
have on planet Earth. Without us, it would be
difficult for you to live
Take care of us and we will take care of you!

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