1. Roots which grow from stems and do not normally grow into the ground. They can be used for climbing. Many absorb misture from the air. T/F
2. A system made up of a large number of equal sized roots all producing smaller lateral roots. The first root is not prominent as it is in a tap root system. T/F
3.Roots which grow directly from a stem. Adventitious roots grow out of bulbs (which are special type of stem) or from Gardiner's cutting. T/F
4.A first root or primary root which is larger than the small roots, called lateral roots,or secondary roots which grow out of it. Many vegetables are swollen tap roots. T/F
Answers
Answer:
1.)Most aerial roots directly absorb the moisture from fog or humid air. Some surprising results in studies on aerial roots of orchids show that the 'Velamen' - the white spongy envelop of the aerial roots, are actually totally water proof, preventing water loss but not allowing any water in.
2.)There are two main types of root systems: tap root and fibrous root system.
(i) Tap root system- Tap root has only one main and long root. The smaller roots that grow from the main root are called lateral roots. They are also called true roots. Tap root grows vertically deep into the soil and has extremely large surface area. A single plant has only one tap root. Tap roots are found in plants which have reticulate venation in their leaves.
Examples: Mango, neem, pea, carrot, beetroot, pine, etc
3.)Propagating gardenias from cuttings starts with getting the gardenia cuttings. The cutting should be at least 5 inches (12.5 cm.) long and taken from the tip of the branch. Ideally, they will be softwood (green wood) The next step in starting gardenias from cuttings involves removing the lower leaves. Take all the leaves off the cutting except for the top two sets. After this, prepare a pot to root the gardenia cutting in. Fill the pot with equal parts of peat or potting soil and sand. Dampen the peat/sand mixture. Dip the cut end of the gardenia cutting into a rooting hormone. Stick your finger in the peat/sand mix to create a hole. Place the gardenia cutting in the hole and then backfill the hole.