The Plant Transport System Flashcards
When do the leaves make food for the plants?
During photosynthesis.
State the function of the water-carrying tubes (xylem).
Transport water and dissolved mineral salts from the roots to all parts of the part.
State the function of the stem of the plant.
Keeps the plant upright.
What do the food carrying tubes (phloem) do?
Transport food from the leaves to the rest of the plant.
What happens to the starch (i.e. food) made by the leaves?
They are transported by the food-carrying tubes (phloem) in the stem from the leaves to all parts of the plant.
State the function of chlorophyll?
Trap sunlight for the plant to make food.
State the function of a tree trunk?
To keep the tree upright.
What happens during photosynthesis?
The leaves of plants make food during photosynthesis.
What happens to the food made by the leaves?
The food made by the leaves is transported to the other parts of a plant such as the roots, the stem, the flowers and the fruits.
What happens to the water and minerals absorbed by the roots?
They get transported to other parts of the plant.
What does the plant transport system do?
Transports substances (i.e. water, mineral salts and food) to the various parts of the plant.
What is the plant transport system in plants made up of?
Two types of tubes, i.e. the water-carrying tubes (xylem) and the food-carrying tubes (phloem).
Where does the xylem run from?
Roots to other parts of the plant.
What is the function of the xylem?
- Transport water and minerals from the roots to other parts of the plant.
- Support the plant.
Where does the phloem run from?
From the leaves to other parts of the plant.
What is the function of the phloem?
Transport food (sugar) from the leaves to other parts of the plant.
Do the water-carrying tubes and the food-carrying tubes function / work concurrently (i.e. at the same time)?
Yes
What do plants use the food (sugar) made in the leaves for?
Carry out life processes.
Are the water-carrying and food-carrying tubes of the transport system found only in the stem of a plant?
No
Are both the water-carrying and food-carrying tubes are found in other parts of the plant?
Yes. They are also found in the other parts of a plant - in leaves, flowers and roots.
Why are the xylem and phloem found in other parts of the plant?
To ensure that water and food can also reach these parts of the plant.
What are the water-carrying tubes made up of?
A set of thick-walled vessels that are connected end to end. Besides transporting water, these vessels also provide support for the plant.
Why can we observe a set of rings in the cross-section of an old tree?
These rings are actually the remains of the old water-carrying tubes - one ring for every year the tree was alive.
What is the plant transport system?
- The plant transport system transports substances such as water, mineral salts and food to the various parts of the plant.
What is germination?
It is the process where a seed develops into a seedling.
Name three fruit that are inedible but non-poisonous.
Fruits of the balsam plant, flame of the forest and the angsana.
Name an example of a poisonous fruit.
Pong pong
What is the main function of the fruit of a plant?
To protect the seed(s) growing within it.
What are the necessary conditions for germination to occur?
The seed must receive sufficient air, water and warmth.
Why is sunlight not necessary for germination to occur?
Sunlight is only needed for photosynthesis which occurs in the leaves of plants. A seedling which has just sprouted does not have real leaves yet and as such, does not need sunlight.
What is the function of the seed leaves?
Provide the seedling with food until the real leaves develop.
Which is the first part of the seedling to grow?
The roots which grow downwards into the soil. Hence, they cannot be seen yet.
What are the two main functions of roots?
They hold the plant firmly to the ground.
They absorb water and mineral salts from the ground.
State a common feature of the roots of a tapioca, radish, carrot and sweet potato plant.
They store food in their roots. They are also edible.
Why use a white instead of a coloured flower when conducting an experiment where the flower is put in water coloured with a food colouring?
It is easier to observe a colour change in a white flower than a coloured one.
Why is food colouring used instead of other colouring agents to colour the water when conducting an experiment to see if plants absorb water from their roots?
Food colouring is made from natural ingredients and will not poison the plant when it absorbs the coloured water.
