BIOLOGY 1A03 Lecture Notes - Lecture 23: Phloem, Vascular Bundle, Xylem

56 views8 pages

blackherring683

23 Sep 2017

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

doinhumolalala and 39849 others unlocked

BIOLOGY 1A03 Full Course Notes

Verified Note

9 documents

Document Summary

9. 1. 1 - draw and label plan diagrams to show the distribution of tissues in the stem and leaf of a dicotyledonous plant. Epidermis - surface of the stem made of a number of layers with a waxy cuticle to reduce water loss. Cortex tissue - forming a cylinder of tissue around the outer edge of the stem. Often contain cells with secondary thickening in the cell walls, which provides additional support. Vascular bundle - contains xylem, phloem and cambium tissue. Xylem - a longitudinal set of tubes that conduct water from the roots, upwards through the stem to the leaves. Phloem - transports sap through the plant tissue in a number of possible directions. Vascular cambium - a type of lateral meristem that forms a vertical cylinder in the stem. This produces the secondary xylem and phloem through cell division in the vertical plane. Pith - found in the centre of the stem.

Related Questions

Bark, which is thicken, toughen periderm, arises from this lateral meristem?

		Vascular cambium
		Cork cambium

QUESTION 2

Seeds with edible fruit are most likely dispersed by

		wind
		animals
		water
		bursting

QUESTION 3

Seeds with wings are most likely dispersed by

		wind
		animals
		water
		bursting

QUESTION 4

The arrangement of flowers on the stem with the newest flowers near the end of the shoot is

		Determinate inflorescence
		Indeterminate inflorescence

QUESTION 5

The arrangement of flowers on the stem with the oldest flowers near the end of the shoot is

		Determinate inflorescence
		Indeterminate inflorescence

QUESTION 6

The cortex in stems is made of this tissue

		Dermal
		Ground
		Vascular

QUESTION 7

The epidermis, cuticle, guard cells, root hairs and trichomes arise from this type of meristem?

		Protoderm
		Ground meristem
		Procambium

QUESTION 8

The epidermis, cuticle, guard cells, root hairs and trichomes arise from this type of tissue?

		Dermal
		Ground
		Vascular

QUESTION 9

The parenchyma, collenchyma and sclerenchyma arise from this type of meristem?

		Protoderm
		Ground meristem
		Procambium

QUESTION 10

The parenchyma, collenchyma and sclerenchyma arise from this type of tissue?

		Dermal
		Ground
		Vascular

QUESTION 11

The xylem and phloem in leaves are contained in which structure?

		blade
		petiole
		stipules
		vein

QUESTION 12

This meristem is located in the root and shoot tips.

		Apical meristem
		Lateral meristem

QUESTION 13

This meristem is located in the stems of plants that live longer than one year.

		Apical meristem
		Lateral meristem

QUESTION 14

Xylem and phloem elements arise from this type of meristem?

		Protoderm
		Ground meristem
		Procambium

QUESTION 15

Xylem and phloem elements arise from this type of tissue?

		Dermal
		Ground
		Vascular

What is the function of the phloem? Select one: a. Phloem carries nitrogenous wastes to the roots where the waste leaves the plant. b. Phloem carries water and minerals to the rest of the plant from the roots. c. Phloem carries water from the leaves to the rest of the plant. d.

Phloem transports sugar down from the leaves to the rest of the plant. How do the cells of the xylem compare to the cells of the phloem? Select one: a. The xylem cells have thin cell walls, whereas the phloem cells have thick cell walls. b. The xylem cells are large, whereas the phloem cells are small. c. The xylem cells have chloroplasts, whereas the phloem cells do not have chloroplasts. d.

The xylem cells are square, whereas the phloem cells are round. From which part of the stem tissue is wood made? Select one: a. spongy mesophyll b. the cuticle c. old layers of xylem and phloem d. central parenchyma Flat leaves lose water to the environment more readily than pine needles do.

Which statement describes a structural characteristic of flat leaves that accounts for this difference? Select one: a. Flat leaves have a thicker coating of waterproof wax. b. Flat leaves have more surface area. c. Flat leaves have a thicker epidermis. d. The stomata of flat leaves are sunken into the leaf.

1. What protects the leaf against desiccation and stress from other environmental factors? Select one: a. Stomata b. Mesophyll c. Epidermis d. Cuticle

2. Match the monocot stem terms to their definitions.

a) support the stem structurally and are dead fibrous cells that have thick walls

Answer choices: Parenchyma Phloem Sclerenchyma Xylem

b) transport water and nutrients up from the roots

c) characterized by large vacuoles, which store nutrients and food.

d) transport sugar formed in the leaves by photosynthesis to the rest of the plant to be used as food.

3. Match the eudicot stem terms to their definitions.

a)surrounds and protects the vascular bundle	Answer choices: Parenchyma Collenchyma Pericycle Cambium Pith
b)center portion of the stem
c) located underneath the collenchyma
d) strengthen young stems and synthesize food
e) contains cells that divide to produce new xylem and phloem

4. Suppose you chop down a plant in the woods and bring it home to examine. You cut a cross section of the stem and you note that it has pith in the center. How would you classify this plant?

5. You encounter a shrubby-looking plant that you cannot tell if it has true wood or not. Upon cutting it open cross-sectionally, you note a layer of cork cambium. What does this tell you?

BIOLOGY 1A03 Lecture Notes - Lecture 23: Phloem, Vascular Bundle, Xylem

BIOLOGY 1A03 Full Course Notes

Document Summary

Get access

Related Documents

BIOLOGY 1A03 Lecture Notes - Lecture 8: Green Leaves, Lipid Bilayer, Cellular Respiration

BIOL 201 Lecture Notes - Lecture 15: Meristem, Vascular Cambium, Ground Tissue

BIOL108 Lecture Notes - Lecture 1: Asepsis, Crustose, Gonad

Related Questions