EEB340H1 Lecture 12: EEB340 Lecture 12.docx

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blackturtle602

10 Apr 2012

School

UTSG

Department

Ecology & Evolutionary Biology

Course

EEB340H1

Professor

Rowan Sage

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Document Summary

Appearance of the preprophase band for this shift. Parenchymatous growth linked to changes in cytoskeletal elements in the cell. Protonema: single cell layer thick (not parenchymatous) Preprophase band only in land plants only ones to have parenchymatous growth: not co-opted from algal ancestors. Plasmodesmata essential to communication and controlling cell growth and development and co-opted from algal ancestors. One of first modifications of land plants was orientation of core cells support and water conduction likely had lignin. By producting more water conducting cells in girth, plants can get larger land masses moved off the poles warmer, more water available, lots of plant growth radial axis, dichotomous branching stem main photosynthetic organ in lycophyta. Monopodial branching for calamites splitting of meristem. Lipidiodendrum was relative of lycopodium dichotomous branching. At carboniferous-permian time boundary, land masses moved to south pole again: glaciation, this time with low carbon dioxide levels, cooler and drier lepidiodendrum went extinct from loss of suitable habitat.

Related Questions

10. F In the shoot apical meristem, the tunica will give rise tothe protoderm and ground tissue meristems, while the corpus willgive rise to the procambium.

11. F Shoots and roots have endarch xylem maturation, but leaveshave exarch xylem maturation.

12. F Parenchyma, collenchyma, and sclerenchyma are different typesof cells found in ground tissue. These cells differ their amount offlexibility and rigidity, with parenchyma having the greatestflexibility and collenchyma having the greatest rigidity.

14. F unlike Bees , beetles are precise pollinators that areattracted to large, brightly colored, zygomorphic flowers.

15. F Both axillary shoots and axillary roots develop from theinternal part of the plant, and they both must push through thecortex in order to reach the external environment.

coralhamster289

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?

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

EEB340H1 Lecture 12: EEB340 Lecture 12.docx

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