Assign Yourself: Lab Report Due Monday

• Do Now:• 1. When do guard cells open the stomata?• 2. When do guard cells close the stomata?• 3. Water leaving plants through the stomata is

called __________________________.• 4. Where are guard cells and stomata located:

on the top or bottom of leaf?

1st Pd Saturday School

• Frida Cisneros• Raquel Palomo• Brandon Gonzales• Steve Flores Hernandez• Lesly Acosta• Stephanie Casanova• Hector Gonzalez

3rd pd Saturday School Letters:

• Allison Medina• Luz Mendoza• Jesus Ramirez• Jesus Cuevas• Seth Loera• Jennifer Viacobo• Luis Bautista-De La Luz• Yoceline Pena –Thank

you, I have yours already

• Miguel Lara• Edgar Rosado Quinto• Alexis Limon Perez• Miguel Lugo• Javier Fiscal• Mariana Garza• Armando Guevara• Brian Perez

5th pd Saturday School Letters:

• Russbel Castillo• Sol Barrientos-

Mata• Oscar Bautista• Brianna Franco• Victor Manriquez

Santos• Daisy Tirado• Katherine Romero

• Destiny Ozuna• Edith Alvarez• Elsa Garcia• Jose Gonzalez• Marivi Cuevas• Juan Garcia• Cindy Hernandez

Pavon

6th Pd Saturday School

• Joanna Sanchez• Fernando Gonzalez• Brandon Trejo• Rey Guzman• Angie Ramos Perez

Assign Yourself: IA Study Guide Due Tomorrow

• Do Now:• Take out your homework, we are starting

notes immediately

Plant Growth and Tropism

What is germination?• When a seed begins to grow.• Usually starts when the seed is exposed to

moisture (when it gets wet).

How does vascular tissue help a plant grow?• Vascular tissue (xylem and phloem) provides

support for the plant, so it can grow tall.

Processing Piece:1) Moss is a plant that grows on rocks and trees. It never grows tall. Do you think moss has vascular tissue? Why or why not?

Processing Piece:2) Vascular tissue (xylem and phloem) carries water and nutrients to all cells of the plant’s body. It also provides support so the plant can grow tall. What TWO systems in the human body have similar functions?

What is a meristem?• The very tip of a plant, where growth happens.• Apical meristem = the top and bottom of the plant• Lateral meristem = tips that branch out to the sides

Processing Piece:Draw a plant. Label the places where you would find the apical meristems and lateral meristems.

What is phototropism?• When a plant grows towards the light

What is gravitropism? • When a plant roots grow down towards gravity, and

the shoot grows up against gravity.

What is thigmotropism? • When a plant

grows along a surface it can climb

Processing Piece• Illustrate the 3 types of tropism.

What is auxin?• A plant hormone • Produced by meristems• Controls growth and tropism in plants

How does auxin control the growth of plants?1. The meristem produces auxin.2. Auxin spreads to the side that has less light.3. Auxin makes cells on that side grow longer.4. The plant bends toward the light.

Processing Piece• Illustrate how auxin makes a plant grow

towards light.

Exit Ticket1. What part of the plant has the same function as

the skeletal system (provides support and helps the plant grow tall)?

2. Name the 3 different types of tropism in plants3. What is auxin?