Morfologi Tumbuhan
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Morfologi Tumbuhan. Reproductive shoot (flower). Terminal bud. Node. Internode. Terminal bud. Shoot system. Vegetative shoot. Blade Petiole. Leaf. Axillary bud. Stem. Taproot. Root system. Lateral roots. Figure 35.2. Three Basic Organ in Plant.

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Morfologi Tumbuhan

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Morfologi tumbuhan

Morfologi Tumbuhan


Three basic organ in plant

Reproductive shoot (flower)

Terminal bud

Node

Internode

Terminal

bud

Shoot

system

Vegetative

shoot

Blade

Petiole

Leaf

Axillary

bud

Stem

Taproot

Root

system

Lateral roots

Figure 35.2

Three Basic Organ in Plant

  • Three basic organs evolved: roots, stems, and leaves

  • They are organized into a root system and a shoot system


The three basic plant organs roots stems and leaves

The Three Basic Plant Organs: Roots, Stems, and Leaves

  • The basic morphology of vascular plants

    • Reflects their evolutionary history as terrestrial organisms that draw nutrients from two very different environments: below-ground and above-ground


Roots

Roots

  • A root

    • Is an organ that anchors the vascular plant

    • Absorbs minerals and water

    • Often stores organic nutrients


Morfologi tumbuhan

AKAR / ROOTS

  • Fungsi Akar

  • Perkembangan Akar

  • Tipe – Tipe akar

  • Modifikasi Akar

  • Simbiosis di akar

http://w3.dwm.ks.edu.tw/bio/activelearner/35/images/ch35summary.gif


Fungsi akar

Fungsi Akar

  • Attachment to substrate (ground, etc)

  • Water and nutrien uptake

  • Transport

    In several plants:

  • Food storage

  • Oxygen uptake

  • Climber


Morfologi tumbuhan

Figure 35.3

  • In most plants

    • The absorption of water and minerals occurs near the root tips, where vast numbers of tiny root hairs increase the surface area of the root


Perkembangan akar

Perkembangan akar


Primary growth of roots

Cortex

Vascular cylinder

Epidermis

Key

Zone of

maturation

Root hair

Dermal

Ground

Vascular

Zone of

elongation

Apical

meristem

Zone of cell

division

Root cap

Figure 35.12

100 m

Primary Growth of Roots

  • The root tip is covered by a root cap, which protects the delicate apical meristem as the root pushes through soil during primary growth

  • The primary growth of roots

    • Produces the epidermis, ground tissue, and vascular tissue


Morfologi tumbuhan

100 m

Emerging

lateral

root

2

3

4

1

Cortex

Vascular

cylinder

Epidermis

Lateral root

Figure 35.14

  • Lateral roots

    Arise from within the pericycle, the outermost cell layer in the vascular cylinder


Sistem perakaran

Sistem Perakaran


Tipe akar berdasarkan pembentukannya

Tipe Akar Berdasarkan Pembentukannya

  • Akar Tunggang

  • Akar Serabut

  • Akar Adventif (lainnya)


Tipe tipe akar

Tipe – Tipe Akar

Akar papan/banir

Akar tunjang


Morfologi tumbuhan

(c) “Strangling” aerialroots

(a) Prop roots

(b) Storage roots

Figure 35.4a–e

(d) Buttress roots

(e) Pneumatophores

  • Many plants have modified roots


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