Documents

Science T1.docx

Categories
Published
of 5
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Related Documents
Share
Description
LIVING THINGS Wild mushrooms are living things that gro won forest floors, tree trunks and even on top of each other. They need moist, cool temperatures and some licght. Wild mushrooms are seasonal and can be found in the autumn and spring. There are many different types of wild mushrooms, but they can look very similar, which makes them very hard to identify. Wild mushrooms are often spectacular. Some are edible and delicious, but others can be poisonous. REFRESH YOUR MEMORY!! LIFE
Transcript
  LIVING THINGS Wild mushrooms are living things that gro won forest floors, tree trunks and even on top of each other. They need moist, cool temperatures and some licght. Wild mushrooms are seasonal and can be found in the autumn and spring. There are many different types of wild mushrooms, but they can look very similar, which makes them very hard to identify. Wild mushrooms are often spectacular. Some are edible and delicious, but others can be poisonous.  REFRESH YOUR MEMORY!!  LIFE PROCESSES What three life processes do all living things carry out? a)   Interaction, breathing and reproduction. b)   Growing, living and breathing. c)   Nutrition, interaction and reproduction. d)   Being born, living and dying. HABITATS What is a habitat? a)   A place where plants and animals live. b)   A very large place where animals live. c)   A small place where only plants live. d)   A place where animals obtain food and water. REPRODUCTION Animals can be viviparous or oviparous. What is a viviparous animal ? a)   An animal that lays eggs. b)   An animal that has lungs. c)   An animal that eats other animals. d)   An animal born from its mother’s womb.  PLANTS AND ANIMALS Plants are different from animals because …  a)   They move more slowly  b)   They make their own food. c)   They grow in all directions. d)   They don’t live in habitats.   WHAT ARE CELLS? All living things carry out three basic life proceses: nutrition, reproduction and sensitivity. In addition, all living things are made up of cells.  Cells are the basic units of life. Most cells are very small and can only be seen through a microscope. Cells are living units and they carry out the three basic life processes. In addition, cells can specialize to perform a particular function. Depending on the number of cells, living things can be classified into: -   Unicellular.  Living things made up of single cell. -   Multicellular.  Living things made up of many cells. Plants and animals are multicellular. The parts of a cell  Cells have three main parts: -   Membrane. This is the covering around the cell. -   Nucleus. This is the part that controls the function of the cell. -   Cytoplasm. This is a jelly-like material, composed mainly of water, between the nucleus and the membrane. It contains the organelles, wich carry out different fuctions of the cell. Animals and plant cells  All animal and plant cells have three main parts: a membrane, a nucleus and cytoplasm with organelles. However, animal and plants cells are different. -   Plant cells have specialized organelles called chloroplasts that absorb sunlight, which plants need to make their own food. Chloroplasts contain chlorophyll, which makes plants green. -   Plant cells are usually bigger and have a regular shape. Animals cells can be many different shapes. -   Plants cells have a rigid cell wall around the membrane. THE ORGANIZATION OF LIVING THINGS    Level of organization  Multi cellular living things are made up of many different types of cells. These cells work together at different levels. The levels of organization of multicellular organisms include : -   Tissues.  Groups of the same type of cells join together to from tissues. All the cells which form a tissue perform the same function. For example, animals have muscle tissue which consists of many muscle cells. Plants also have tissues, for example, the epidermis is the tissue that covers leaves and consists of epidermal cells. -   Organs.  Tissues join together to form organs. Tissues in organs work together to perform a common function. For example, muscle tissues join together to make the muscle organ. Plants also have organs. -   Systems.  Organs join together to form systems. Organs within systems work together to perform a common function. For example, the muscular system makes our body move. -   Organisms.  Finally, all the different types of systems work together to form an organism. In a multicellular living thing, cells, tissues, organs and systems all work together so the organism functions correctly. THE CALSSIFICATION OF LIVING THINGS  Living things are classified into groups called kingdoms. There are five kingdoms: -   Animals kingdom -   Monera kingdom -   Plant kingdom -   Protista kingdom -   Fungi kingdom Animal kingdom  The main characteristics of animals are :    They are multicellular living things.    They eat other living things.    They can move about from are one place to another.    They have a nervous system and sense organs.    They react to stimuli. Plant kingdom The main characteristics of plants are :    They are multicellular living things.    They can make their own food by using sunlight and substances from the soil.     They cannot move about because they are fixed by roots.    They do not have a nervous system or sense organs.    They can react to stimuli, for example, many plants grow towards the light. Fungi kingdom  Fungi are different from animals and plants. Most of a fungus grows beneath the soil. A mushroom is the visible part of a fungus.    They are mainly multicellular living things, although some are unicellular.    They cannot make their own food. They feed on other organisms.    They cannot move about because they are fixed to something. Manera kingdom  The main characteristics of monerans are :    They are unicellular living things.    This kingdom includes bacteria, the most abundant living things. Bacteria are very small and can only be seen through a microscope.    Some bacteria cn make their own food, and others feed on other organisms.    Some bacteria are helpful, like the ones used to make yoghurt; but others are harmful, like the ones that cause cholera. Protista kingdom  The main characteristics of protists are:    They can be unicellular or multicellular living things.    They include protozoa, unicellular organisms that feed on other organisms.    They also include algae, unicellular or multicellular aquatic organisms that can make their own food. VIRUSES.  Viruses are not included in any of the five kingdoms because they are not living things. A virus is a microscopic body that can only reproduce inside living things. Viruses may cause illnesses.   PRACTISING COMPETENCES Identifying the parts of a microscope Cells, as well as some other living things, are so small that we cannot see them with the naked eye. However, we can observe them through a microscope. A microscope is an instrument with several lenses that make very small objects appear much larger than they really are.
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks