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Resumen Tema Ecosistemas, Esquemas y mapas conceptuales de Ciencias de la Tierra y del Medio Ambiente

Ecosistemas y biodiversidad. Esquema básico del tema

Tipo: Esquemas y mapas conceptuales

2020/2021

Subido el 06/04/2021

PJVL23
PJVL23 🇪🇸

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Plant Classification
- Flowering and non-flowering plants.
All flowering plants have flowers and produce sedes. Flowers are the reproductive organs of flowering plants.
Flowering plants include angiosperms and gymnosperms.
o Angiosperms:
The flowers of angiosperms produce fruit with sedes inside.
Angiosperms have leaves that change color in autumn.
Angiosperms are the largest group of flowering plants.
o Gymnosperms:
These plants have small flowers.
Most gymnosperms have hard and Sharp leaves, called needles.
These flowering plants produce seeds that grow in cones, not inside fruit.
- Non-flowering plants.
Non-flowering plants do not have flowers, seeds or fruit. They reproduce using spores. There are two main
groups of non-flowering plants: ferns and mosses.
o Ferns:
Have large leaves called fronds.
They produce spores inside sori.
Ferns have thick stems called rhizomes, and roots that grow underground.
o Mosses:
They have very simple stems and leaves.
They produce spores inside capsules.
Mosses don’t have roots. They have rhizoids that are small hairs that hold the plant
in the soil.
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Plant Classification

  • Flowering and non-flowering plants.

All flowering plants have flowers and produce sedes. Flowers are the reproductive organs of flowering plants. Flowering plants include angiosperms and gymnosperms.

o Angiosperms:  The flowers of angiosperms produce fruit with sedes inside.  Angiosperms have leaves that change color in autumn.  Angiosperms are the largest group of flowering plants. o Gymnosperms:  These plants have small flowers.  Most gymnosperms have hard and Sharp leaves, called needles.  These flowering plants produce seeds that grow in cones, not inside fruit.

  • Non-flowering plants.

Non-flowering plants do not have flowers, seeds or fruit. They reproduce using spores. There are two main groups of non-flowering plants: ferns and mosses.

o Ferns:  Have large leaves called fronds.  They produce spores inside sori.  Ferns have thick stems called rhizomes, and roots that grow underground. o Mosses:  They have very simple stems and leaves.  They produce spores inside capsules.  Mosses don’t have roots. They have rhizoids that are small hairs that hold the plant in the soil.

  • Parts of the plant (leaves, stem and roots). o Leaves:  Have two main functions: produce food for the plant and help the plant breathe.  Most leaves have two parts: petiole (connects the blade to the plant’s stem) and blade (is the flat part of the leave).  Veins in the blade support the leaf and carry water and minerals.  On the back of the blade there are tiny holes called stomata that allow gases enter and exit the leaf.  The plant makes its own food in the leaves. Leaves contain chlorophyll, a green substance which is neccessary for photosynthesis. o Stem:  Two main functions: keeps the plant standing up and transport water and nutrients to and from the leaves.  It can be Woody (rigid) or herbaceus (soft). o Roots:  They have three main functions: Hold the plant in the ground, support the stem of the plant and absorb water and minerals from the soil.
  • Plants nutrition.