This document discusses plant nutrition and respiration. It explains that plants take in carbon dioxide through respiration in their leaves, and they are autotrophs that produce their own food through photosynthesis using sunlight, carbon dioxide, water, and minerals absorbed from the soil through their roots. During photosynthesis, which occurs in the leaves, plants take in carbon dioxide and sunlight to produce oxygen and elaborated sap, which is the plant's food.

1. PLANT NUTRITION

2. RESPIRATION
● Plants breathe.
● They take oxygen
from the air and
release carbon
dioxide.
● This process takes
place in leaves.

3. Plant nutrition
● Plants are
autotrophs: they
make its own food.
● To make food, plants
need:
sunlight,
carbon dioxide,
water and
minerals.

4. Water and minerals
● In the soil, minerals
dissolve in water.
● Plants absorb this
water through their
roots.
● These nutrients, raw
sap, travel up the
stem to the leaves.

5. PHOTOSYNTHESIS
● Photosynthesis
enables plants to
make food from
sunlight, carbon
dioxide, water and
minerals.

6. PHOTOSYNTHESIS
● Photosynthesis
takes places in the
leaves.
● Raw sap mixes
with carbon dioxide
and becomes
elaborated sap.

7. PHOTOSYNTHESIS
● This elaborated sap
is the plant´s food.
● Sunlight is essential
for photosynthesis.
● During
photosynthesis,
plants release
oxygen.