semana del 4 al 8 de noviembre

Science theme # 4. Here you have the summary of the unit:

SCIENCE TEST: the test on theme # 4 is the next ......

semana del 7 al 11 de octubre

SCIENCE: This is a little summary of the theme #2, Plants

THEME 2, PLANTS

PLANT GROUPS

Roots: are in the soil. Water and other substances are absorbed form the soil

Stem: supports the leaves

Leaves: breathe and make the plant’s food

FLOWERING PLANTS

Gymnosperms: have small flowers, but not fruit (example: pine tree)

Angiosperms: have flowers and fruit (examples: grapes, olives, lemon tree, orange tree, etc.)

NON-FLOWERING PLANTS

Mosses: are small plants which live in rocks. They need shade and moisture

Ferns: are larger than mosses. They have thick, underground stems and big leaves

PLANT NUTRITION

Respiration: plants breathe. They take oxygen (O₂) from the air, and release carbon dioxide (CO₂).

Plant nutrition: plants are autotrophs; they make their own food with sunlight, CO₂, H₂O and minerals from the soil.

Water and minerals: plants absorb water and mineral from the soil through the root. These nutrients are called raw sap.

Photosynthesis: takes place in the leaves. Raw sap mixed with CO₂, becomes elaborated sap. This is the plant’s food. Photosynthesis takes place only during the day.

SEXUAL REPRODUCTION

Sexual reproduction: flowers are the reproductive organs of the plant.

·         The stamens: are the male parts which produce pollen

·         The ovary: Is the female part which contains ovules (seeds)

Pollination: is the movement of pollen from the stamens to the ovary

Seeds and fruit: when the ovary grows, becomes a fruit with seeds inside.

ASEXUAL REPRODUCTION

Asexual reproduction:  some plants reproduce without flowers or seeds

Tubers: are underground stems (potatoes)

Bulbs: grow underground (onion)

Stolons: stems which extend across the ground. The stem grows roots and creates a new plant (strawberry).

SCIENCE TEST: the test on theme #2 is the next Thursday 24 October, 2013
(la fecha de examen del tema 2 de ciencias es el próximo jueves 24 de octubre de 2013 )


here you have a home-made summary of the theme (it will help you to pass the test, good luck!)

Recordad la configuración de los nuevos exámenes de Science:

• 10 preguntas (9 en inglés y una -a desarrollar- en castellano)
• una de las 9 preguntas en inglés será una actividad de "listening" (escuchar una grabación y completar un texto en inglés.

la pregunta de regalo para este segundo tema es:

• ¿qué son las esporas?