Animal bodies are made up of several systems. Animals and human beings carry out the basic life process of interaction, nutrition and reproduction with these systems.
Nutrition:
Our digestive system uses the food and water we eat or drink to provide energy for our muscles. The respiratory system absorbs oxygen and the circulatory system transports it to our muscles so we can move and grow.
Interaction:
The sense organs, the nerves and the brain form the nervous system: it detects information. The muscular and skeletal systems enable us to react to that information.
Reproduction:
Our reproductive system enables us to reproduce by having children. To reproduce, male and female cells combine and slowly develop into an embryo, and then a foetus. The foetus grows into a baby in its mother's uterus.
Showing posts with label LIVING THINGS. Show all posts
Showing posts with label LIVING THINGS. Show all posts
Saturday, 12 November 2016
HOW ARE PLANTS ORGANISED?
Plants have cells, tissues, organs and systems.
Cells:
Plant cells have a rigid cell wall. Photosynthesis takes place in leaf cells. Those cells contain a green liquid called chlorophyll and a liquid called sap that is used to make food for the plant.
Tissue:
Plant tissue is made up of many cells joined together.
Organs:
Organs are made up of tissue. A leaf is an organ.
Systems:
Systems are groups of organs and tissue that work together to carry out a function.
Roots:
The functions of the roots is absorb wter and nutrients from the soil. root cells have root hairs. As a result, the roots can absorb more water and minerals.
Cells:
Plant cells have a rigid cell wall. Photosynthesis takes place in leaf cells. Those cells contain a green liquid called chlorophyll and a liquid called sap that is used to make food for the plant.
Tissue:
Plant tissue is made up of many cells joined together.
Organs:
Organs are made up of tissue. A leaf is an organ.
Systems:
Systems are groups of organs and tissue that work together to carry out a function.
Roots:
The functions of the roots is absorb wter and nutrients from the soil. root cells have root hairs. As a result, the roots can absorb more water and minerals.
HOR ARE ANIMALS ORGANISED?
Cells:
Multicellular organisms have many types of cells. The cells are different shapes according to their function.
Tissue:
Cells join together to form tissue. Each type of tissue has a specific function.
Organs:
Organs are made up of different tissues.
Systems:
Systems are groups of organs that work together to perform a function.
There are many types of cells in multicellular organisms. Each type has a specific function and a unique appearance:
Red blood cells. They are flat and circular. They carry oxygen from the lungs to the muscles and organs.
Nerve cells. They are star-shaped. They transmit nerve impulses from different parts of the body to the brain.
Reproductive cells. They enable us to reproduce. Female reproductive cells are spherical. Male reproductive cells are oval with a long tail.
Friday, 11 November 2016
WHAT ARE LIVING THINGS MADE UP OF?
All living things are made up of cells. Cells are the basic units of life. They are living things. Cells are very small.
Cells carry out the basic life processes of interaction, nutrition and reproduction.
Animal cell.
The nucleus controls everything that happens inside the cell.
The membrane surrounds and protects the cell.
In the cytoplasm, we find special organelles that carry out different life processes.
The cytoplasm is a thick, clear liquid protected by the membrane.
Plant cell.
In the cytoplasm of plant cells,there are special organelles called chloroplasts. They contain a green liquid called chlorophyll.
Plant cells have a rigid cell wall around the membrane. This helps support the plant.
Plant cells have a vacuole, which is like a bag. Food and water are stored in the vacuole. When a plant doesn't have enough water, the plant loses its rigid structure and begins to wilt.
Unicellular and multicellular organisms.
Some living things, such as bacteria or yeast, are made up of only one cell. They're unicellular organisms.
Other living things, such as trees or butterflies, have many cells. They're multicellular organisms.
Cells carry out the basic life processes of interaction, nutrition and reproduction.
Animal cell.
The nucleus controls everything that happens inside the cell.
The membrane surrounds and protects the cell.
In the cytoplasm, we find special organelles that carry out different life processes.
The cytoplasm is a thick, clear liquid protected by the membrane.
Plant cell.
In the cytoplasm of plant cells,there are special organelles called chloroplasts. They contain a green liquid called chlorophyll.
Plant cells have a rigid cell wall around the membrane. This helps support the plant.
Plant cells have a vacuole, which is like a bag. Food and water are stored in the vacuole. When a plant doesn't have enough water, the plant loses its rigid structure and begins to wilt.
Unicellular and multicellular organisms.
Some living things, such as bacteria or yeast, are made up of only one cell. They're unicellular organisms.
Other living things, such as trees or butterflies, have many cells. They're multicellular organisms.
WHAT DO LIVING THINGS DO?
All living things carry out the basic life processes of interaction, nutrition and reproduction.
Interaction:
All living things detect information in their environment. Then they react to this information in different ways.
Nutrition:
All living things take in essential nutrients from their environment. These nutrients give them energy and enable them to grow and develop.
Reproduction:
Living things can create new members of their own species. Different organisms reproduce in a specific way.
Human beings carry out the basic life processes of interaction, nutrition and reproduction:
Interaction. We interact with the world around us. We use our senses to detect information about the world.
Nutrition. We carry out nutrition by drinking water and eating food. The oxygen we take in is also part of the process. Finally, we eliminate waste products.
Reproduction. we reproduce to make new members of our species.
Interaction:
All living things detect information in their environment. Then they react to this information in different ways.
Nutrition:
All living things take in essential nutrients from their environment. These nutrients give them energy and enable them to grow and develop.
Reproduction:
Living things can create new members of their own species. Different organisms reproduce in a specific way.
Human beings carry out the basic life processes of interaction, nutrition and reproduction:
Interaction. We interact with the world around us. We use our senses to detect information about the world.
Nutrition. We carry out nutrition by drinking water and eating food. The oxygen we take in is also part of the process. Finally, we eliminate waste products.
Reproduction. we reproduce to make new members of our species.
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