tissue of plants from the stem, leaves, seeds, or roots.
What is fibre?
100
It can reach deep into the ground to obtain moisture.
What are taproots?
100
people choose specific plants with particular characteristics and encourage these plants to reproduce.
What is selective breeding?
100
They do this by combining two simple materials, carbon dioxide (from the air) and water. These combine to make the material that we know as sugar. Sugar is a kind of energy-storing chemical made by plants. This process is called
What is photosynthesis?
100
to take a branch from one tree and attach it to another tree.
What is grafting?
200
a critical part of ecosystems. They produce the oxygen that
most organisms require for life. Industrial activities and automobiles add excess carbon dioxide and pollutants to the atmosphere. They help reduce this problem by using carbon dioxide.
What are plants?
200
the tendency of particles in a gas or a liquid to become evenly distributed by moving from areas of greater concentration to areas of lesser concentration.The particles continue to spread until they are evenly spaced in an area.
What is diffusion?
200
the two ways plants can reproduce?
What is asexual (vegetative) and sexual reproduction?
200
the development of a seed into a new plant.
What is germination?
200
They have the tallest stems in the world?
What is a sequoia tree?
300
a natural fibre that has been grown and used by humans
for centuries. In fact, you are probably wearing at least one garment made from it right now.
What is cotton?
300
Osmosis is a type of diffusion in which only some
types of particles are allowed to pass through a barrier.
Imagine a mesh bag filled with marbles and sand. Sand
will get through the mesh, but the marbles will remain.
The mesh bag is like the cells in the root. The cells are....
What is differentially permeable?
300
The process of pollen travelling to the female cone.
What is pollination?
300
the diffusion of water through a differentially permeable membrane.
What is osmosis?
300
these are the three parts included in the stamen (male reproductive organ).
What is anther, pollen grains, filament?
400
The sugar in some plants can be turned into a type of liquid fuel called.....
What is ethanol?
400
Carbon dioxide enters plants through tiny holes in leaves called
What is stomata?
400
these are the four parts included in the pistil (female reproductive organ).
What is stigma, style, ovary, ovules?
400
When guard cells absorb water, they swell and the stoma opens, letting in carbon dioxide and letting out water vapour. This loss of water from a plant through evaporation is called
What is transpiration?
400
process by which plants release carbon dioxide and let oxygen into their cells.
What is respiration?
500
It is used as a prevention for malaria, a deadly disease carried by certain tropical mosquitoes.
What is quinine?
500
these are the five parts of a trees trunk.
What is heartwood, xylem, cambium, phloem and bark?
500
the eggs of one plant are fertilized by sperm from another plant of the same species. In the wild, this can occur when the wind or animals carry pollen from one flower to another.
What is cross-pollination?
500
Plant scientists now have the ability to make changes to plants by going inside an individual plant cell and changing some of its material. They do this by first removing the parts of the cell that control its characteristics. This material is called
What are genes?
500
occurs when a “parent” plant grows new plants from its roots, stems, or leaves.