Multicellular Organisms Flashcards
What is the job of the stems and roots?
The roots absorb water and minerals from the soil and anchor the plant in the ground. The stem supports the plant above ground, and carries the water and minerals to the leaves.
how do plant roots allows absorption of water from the soil
There are many, elongated root hairs to increase the total root surface area for water absorption
how do plant stems enables water to be transported up from the roots and sugar to be transported down from the leaves.
The water is absorbed by the root hair and undergoes cell to cell movement by osmosis until it reaches the xylem.
Outline the role of photosynthesis in plants and describe the process using a word equation.
Photosynthesis is the process that plants use to convert light energy into sugar molecules. The equation for photosynthesis is: carbon dioxide + water + sunlight -> oxygen and glucose.
Explain how the structure of plant leaves enables photosynthesis
Their high concentration of chloroplasts
Identify the reproductive organs in a flower.
Stamen and carpel are the reproductive organs of a flower.
Describe the cycle of pollination, fertilisation, seed dispersal and germination
After this happens, the pollen contacts a female gamete called the ovum, and the two fuse in the process of fertilization
Collect and analyse data about the structure and function of plant stems.
The stem of the plant connects the roots to the leaves, helping to transport absorbed water and minerals to different parts of the plant.
what is the structure and function of flowers.
Mediate the joining of the sperm, contained within pollen, to the ovules
Outline the role of cell division in growth, repair and reproduction in multicellular organisms
Multicellular organisms use cell division for growth and repair of damage such as wounds.
Explain how the digestive system allows the breakdown of food and absorption of nutrients by the blood.
The broken-down food is then absorbed into the bloodstream from the small intestine and the nutrients are carried to each cell in the body.
Explain how the respiratory system enables oxygen in the air to be absorbed by the blood.
Oxygen moves from the alveoli to the blood through the capillaries lining the alveolar walls.
Explain how the structure of the circulatory system enables sugar and oxygen to be transported to the cells of the body for respiration.
The arteries break down into smaller and smaller branches to bring oxygen and other nutrients to the cells of the body’s tissues and organs.
Explain how the structure of the urinary system allows wastes produced by cells to be excreted from the body.
The tubule adjusts the level of salts, water, and wastes that will leave the body in the urine.
Explain how the structure of the musculoskeletal system provides support, protection for internal organs and enables movement.
The muscles of the muscular system attach to these bones, pulling on them to allow for movement of the body.
