-zone of elongation
-zone of maturation
-root hairs
-root cap
-root tip
100
What does dormant mean?
Capable of showing characteristics of life but not yet in the right environment
200
What is the purpose of the cotyledon?
Provides food/energy for baby plant
200
What is a monocot?
Seed with one cotyledon
200
What grows first when a seed germinates?
The root
200
What happens in the root tip (apical meristem)?
Cells are actively dividing; plant grows new cells here
200
What is the field of view at 10x?
1.5 mm
300
What is the name of the part that protects the embryo and cotyledon?
Seed coat
300
What is a dicot?
Seed with two cotyledons
300
Why does the root grow first?
To get water for the embryo
300
How does the root cap differ from the root tip?
Root cap simply protects roots as it grows down into the ground; new cell are formed at the root tip
300
What would happen if a plant did not have roots?
No way to get water, anchor to ground, absorb nutrients
400
A seed can have either one or two of these.
Cotyledons
400
Name a seed that is a monocot.
corn, wheat, barley, onion
400
What grows after the roots?
-shoots then leaves
400
How does the zone of elongation differ from the zone of maturation?
Cells start elongated in the zone of elongation but don't form root hairs until they get to the zone of maturation
400
What is the name of the process in which water goes in through the roots, up the vascular channel (xylem), and out through the stomates?
Transpiration
500
What are the three parts of the seed and what do they do?
Embryo - baby plant; germinates in the right conditions
Cotyledon - starchy material that is "food" for the baby plant
Seed coat - protects the embryo and cotyledon
500
How is a monocot different from a dicot? Provide examples of each.
Monocot - one cotyledon (corn, wheat, barley, onion), dicot - two cotyledons (sunflower, green bean, squash, cucumber, tomato, pea)
500
What two things does the root do beside get water?
-anchors plant to ground
-stores food and nutrients
500
Name two root parts and explain why they are important.
Root cap - protects root as it burrows down
Root tip - new cells created here so that root can eventually get more water and anchor plant into the ground
Zone of elongation - cells elongate here to lengthen out the root
Zone of maturation - cells form root hairs here so that they can absorb more water
Root hairs - increase surface area so more water can be absorbed
500
Which seed germinated more quickly and why? (weed seed vs. soybean seed)
Weed seed - water dissolved the cotyledon and oxygen broke down nutrients stored there much quicker than in the soybean seed
Many factors affect seed growth - water, light, oxygen, pH, temperature