1. What protects the leaf against desiccation and stress from other environmenta
ID: 92625 • Letter: 1
Question
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
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
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?
a) support the stem structurally and are dead fibrous cells that have thick walls
Answer choices: Parenchyma Phloem Sclerenchyma Xylemb) 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 Pithb)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
Explanation / Answer
1.Correct answer is:d.cuticle
2.Correct answers are:
a)support the stem structurally and are dead fibrous cells that have thick walls :sclerenchyma
b) transport water and nutrients up from the roots :xylem
c)characterized by large vacuoles, which store nutrients and food :parenchyma
d) transport sugar formed in the leaves by photosynthesis to the rest of the plant to be used as food :phloem
3.Correct answers are:
a)surrounds and protects the vascular bundle : pericycle
b)center portion of the stem:pith
c)located underneath the collenchyma :parenchyma
d)strengthen young stems and synthesize food : collenchyma
e)contains cells that divide to produce new xylem and phloem : cambium
4.This plant would be classified as dicot plant.This is because in dicot plants, pith is present in centre of plant.
5.It tells us that it is a true wood as cork cambium that is responsible for secondary growth is a part of woody plants.
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