Discover the World of Specialized Leaves

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Questions and Answers

Plant organs are made up of tissues that perform similar functions.

True

The shoot system of a plant includes the leaves, stems, and flowers.

True

The root system of a plant is connected to the shoot system by vascular tissues.

True

Fibrous roots are commonly found in monocotyledonous plants.

<p>True</p> Signup and view all the answers

Root hairs are extensions of root epidermal cells that increase the absorptive surface area of the root.

<p>True</p> Signup and view all the answers

Prop roots are aerial roots that perform photosynthesis.

<p>False</p> Signup and view all the answers

Primary growth is responsible for growth in width.

<p>False</p> Signup and view all the answers

The vascular cambium adds layers of secondary xylem and secondary phloem.

<p>True</p> Signup and view all the answers

The cork cambium replaces the epidermis with periderm.

<p>True</p> Signup and view all the answers

Intercalary meristems are found in the vicinity of nodes and add to stem length.

<p>True</p> Signup and view all the answers

Primary growth leads to lengthening of roots and shoots.

<p>True</p> Signup and view all the answers

The region of cell division is composed of apical meristem in the center of the root tip.

<p>True</p> Signup and view all the answers

True or false: Air roots are found on mangroves in swamps and allow roots to obtain oxygen above the water line?

<p>True</p> Signup and view all the answers

True or false: Contractile roots pull plants deeper into the soil?

<p>True</p> Signup and view all the answers

True or false: Buttress roots provide stability in shallow soils?

<p>True</p> Signup and view all the answers

True or false: Pneumatophores are present in prop roots?

<p>False</p> Signup and view all the answers

True or false: Stolons are produced above the surface of the ground?

<p>False</p> Signup and view all the answers

True or false: Tubers are swollen, fleshy underground stems that store food?

<p>True</p> Signup and view all the answers

Lateral meristems are typically found in monocots.

<p>False</p> Signup and view all the answers

Secondary growth occurs in stems and roots of woody plants.

<p>True</p> Signup and view all the answers

The vascular cambium adds secondary xylem and phloem.

<p>True</p> Signup and view all the answers

The cork cambium produces tough, thick, waxy covered cells.

<p>True</p> Signup and view all the answers

The oldest rings of secondary xylem stop conducting water and minerals.

<p>True</p> Signup and view all the answers

The periderm is impermeable to water and gases.

<p>True</p> Signup and view all the answers

Onions and lily have reproductive leaves that walk?

<p>False</p> Signup and view all the answers

Poinsettia flowers have brightly colored bracts instead of petals?

<p>True</p> Signup and view all the answers

Pitcher plants trap and digest insects inside their cone-shaped leaves?

<p>True</p> Signup and view all the answers

Dermal tissue is the outer protective covering of plants?

<p>True</p> Signup and view all the answers

Xylem is responsible for the conduction of sugar downward from shoot to root?

<p>False</p> Signup and view all the answers

Parenchyma cells have thick secondary walls and function in support?

<p>False</p> Signup and view all the answers

Study Notes

Plant Organs and Tissues

  • Plant organs are composed of tissues that perform similar functions.
  • The shoot system consists of leaves, stems, and flowers, while the root system is connected to the shoot system by vascular tissues.

Root System

  • Fibrous roots are commonly found in monocotyledonous plants.
  • Root hairs are extensions of root epidermal cells that increase the absorptive surface area of the root.
  • Prop roots are aerial roots that perform photosynthesis.

Growth and Development

  • Primary growth is responsible for growth in width.
  • The vascular cambium adds layers of secondary xylem and secondary phloem.
  • The cork cambium replaces the epidermis with periderm.
  • Intercalary meristems are found in the vicinity of nodes and add to stem length.
  • Primary growth leads to lengthening of roots and shoots.

Types of Roots

  • Air roots are found on mangroves in swamps and allow roots to obtain oxygen above the water line.
  • Contractile roots pull plants deeper into the soil.
  • Buttress roots provide stability in shallow soils.
  • Pneumatophores are present in prop roots.

Stem and Root Development

  • Lateral meristems are typically found in monocots.
  • Secondary growth occurs in stems and roots of woody plants.
  • The vascular cambium adds secondary xylem and phloem.
  • The cork cambium produces tough, thick, waxy covered cells.

Plant Anatomy

  • The oldest rings of secondary xylem stop conducting water and minerals.
  • The periderm is impermeable to water and gases.
  • Dermal tissue is the outer protective covering of plants.
  • Parenchyma cells have thin primary walls and function in storage and photosynthesis.

Miscellaneous Plant Facts

  • Poinsettia flowers have brightly colored bracts instead of petals.
  • Pitcher plants trap and digest insects inside their cone-shaped leaves.
  • Tubers are swollen, fleshy underground stems that store food.
  • Stolons are produced above the surface of the ground.

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