Botany: Roots & Soil

When a seed germinates, the part of the embryo that develops into the first root is called the.

.

radicle
Beans are part of the legume family
True
Outer cells of the root cap secrete mucus
False
Root hairs decrease the absorbing surface of the root
False
The protective covering of the growing tip of a root is called a root cap
True
Moncots are plants with two seed leaves
False
The prop root is an example of a pneumatophore
False
Mycorrhizae roots develop a lot of root hairs because the host can’t support both the parasite and itself
False
Mycorrhizae roots develop a lot of root hairs because the host can’t support both the parasite and itself
False
The buttress roots of a tree are actually part of the trunk and are not roots at all.
False
Grasses generally produce a taproot
False
In addition to anchoring a plant, roots usually function directly in which of the following processes?
A.

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ABSORBTION OF MINERALS IN A SOLUTIONB. PhotosynthesisC. Production of bud scalesD.

Production of new leaves

Root hairs first appear in the…
A. REGION OF MATURATIONB.

Region of ElongationC. Root CapD. Apical Meristem

The primary function of a living phloem is conducting.

..

soluble foods
Which of the following is found inside the procambium..

.

A. XylemB. XYLEM AND PHLOEMC. EpidermisD.

Cortex

The primary function of which tissue is food storage?
Phloem
Which root is adapted for food storage?
Fibrous root
Adventious roots…
develop from the base of the stem
What are the only 2 parts of the root that pushes through the soil?
Apical meristem & root cap
Which kind of rot does not have good absorbtion during a drought?
Dandelion
A dandelion is an example of which type of specialized root because it pulls itself down untill it can reach a stable temperture.

Contractile
The primary function of xylem and phloem is
Conduction
Plants are mainly dependent for their water needs from which form of water found in the soil?
Capilllary
The vertical column of soil exhibits different horizons. Which of the following is the correct order?
A, E, B, & C horizons
Which organelle in the root cap secretes a slimy substance that helps push the root through the soil?
Golgi Apparatus
The tissue adjacent to the endodermis toward the center of a root is the
Pericycle
Which of the following is NOT an example of a food-storage root?
Pea
Soil __ refers to the relative proportions of sand, silt, and clay in given soil
Texture
Roots that have fungi symbiotically associated with them are called..
Mycorrhizae
Mangroves is an example of which type of specialized root?
Pneumatophores
___ is a root like projection of the parasitic roots that penetrates the out tissue and connects with the water conducting and food conducting tissues of the host.
Haustoria
Aerial roots of trees that grow in swamps
Both provide root cells with oxygen and function to anchor the plants
The perception of gravity by a root is thought to take place in the
the root cap
Specialized roots that permit plants growing in water to facilitate gas exchange are called:
Pneumatophores
The plant cells that carry water from the roots throughout the plant are called:
Xylem
Manroots is an example of which type of specialized root?
Water storage
The pericycle…
gives rise to branch roots
Plants belonging to the __ family have nodules with nitrogen-fixing bacteria
Legume
The central cylinder of a root inside the endodermis is called the ___ or stele
Procambium
What is the term for the growth response to gravity?
Gravitropism