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STEM LS 5-6

QuestionAnswer
______ contain the dormant, living embryo of a plant. seeds
______ is the onset of growth and differentiation in plant seeds. germination
Growing roots typically have a root tip where ______ takes place. cell division
The ______ is the primary source of food for seed germination. cotyledon
Seeds are _____ in a variety of ways dispersed
______is a component of the water cycle. It is the process through which water vapor leaves plant cells through the stomata. transpiration
______ is the system of tube-like connected cells that transports water, minerals and sometimes sugar from the roots to all structures of the plant. xylem
______ transports sugar from the photosynthetic cells to other parts of the plant. Phloem
______ are openings on leaves that are controlled by guard cells. stomata
Water in the form of _____, a gas, continually leaves the plant through the stomata. water vapor
Cell walls are made of _____ which is flexible and yet rigid. cellulose
Leaves are the food factories for plants because this is where most of the _____ takes place. photosynthesis
Photosynthesis is the process by which plants make food from water and carbon dioxide in the presence of _____. sunlight
_____ are green organelles that contain chlorophyll, the chemical that uses light to produce sugars in plants. chloroplasts
Seeds are alive in a _____ state until the conditions are right for it to germinate. dormant
Germination required oxygen, water and _____. heat
The _____ protects the seed until germination occurs. seed coat
The cotyledon provides food for the plant and composed of a starchy substance called _____. endosperm
The _____ is the baby plant. embryo
Seeds need _____, warmth and oxygen to germinate. water
_____ are the first structure to emerge during germination. roots
Roots always grow in the direction that _____ pulls. gravity
_____ always grow away from the Earth in an upward fashion. Shoots or stems
The _____ is a mass of cells at the very tip of the root that protects the tip as the roots pushes through the rough soil. root cap
The _____ is just behind the root cap; The cells here are small and busy dividing. root tip
The zone of _____ is the area behind the root tip where the cells are more stretched out and growing longer. elongation
The zone of _____ cells are the same length as in the zone of elongation but these have roots hairs extending from the cells. maturation
_____ is an important pigment that captures light energy and makes it available to the plant to help the plant make food. chlorophyll
The stomata are _____ in a wilted leaf. closed
_____ regulate the amount of water passing out of the plant. guard cells
Created by: jhshwood
 

 



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