Plants use photosynthesis to produce food from sunlight, resulting in oxygen production. Some plants adapt to hot weather through long roots, storing water in stems or leaves, or growing pricks to reduce water loss. Plants in cold places grow in thick, low clumps for protection. Epiphytes are plants that grow on other plants without touching the ground. Parasitic plants obtain nourishment by growing into or attaching to other plants. Angiosperms are divided into monocots and dicots, with the main difference being that monocots have one cotyledon and dicots have two.

1. PLANTS
1. HOW DO PLANTS FEED?
They use the energy from the Sun´s light to make food by a chemical process
called photosynthesis. This results in the production of oxygen.
2. DESCRIBE SOME ADAPTATIONS FOUND IN PLANTS TO SURVIVE IN HOT
AND COLD WEATHER
a) In hot weather
– Some plants e.g. cacti have long, widely spreading roots to collect water
– They store water in their expandable stems
– Succulent plants store water in swollen fleshy leaves
– Some plants have pricks (pinchos) to avoid evapotranspiration (loss of water)
b) In cold weather
– Plants in cold places grow in thick, low clumps which protects them from the
cold and wind
3. WHAT ARE EPIPHYTES?
They are plants that grow on other plants, e.g. entirely suspended in tree
branches, never touching the ground
4. HOW DO PARASITIC PLANTS OBTAIN FOOD?
- Some parasitic plants such as mistletoe obtain extra nourishment by growing
into the tissues of larger plants
- Other plants attach themselves to another plant for nourishment
5. IN WHICH TO CLASSES ARE ANGIOSPERMS DIVIDED AND WHAT
DIFFERENCES ARE THERE BETWEEN THEM?
- Monocots and dicots
- The basic difference is in the number of cotyledons, or seed leaves. Monocots
have one and dicots have two.
- A cotyledon is a part of the embryo within the seed of the plant. Upon
germination, the cotyledon may become the first leaves of a seedling (=vástago,
semilla en germinación)