Homework-Lecture 1

Which of the following increases the ability of the plant to keep its physiological support for longer time?

A
B
C
D

Which of the following graphs expresses the correct relationship between the rate of transpiration through the stomatal guard cells in mallow (molokhia) leaves and the ability of them to maintain their physiological support, providing that the absorption rate is constant?

A
B
C
D

•On studying the osmotic phenomenon in the cells of a plant, we find that it affects the transfer of water molecules from the medium of high water concentration to the medium of low water concentration. And also, we find that this vital process takes place through a permeable medium.

Both statements are correct.
The first statement is not correct while the second is correct.
The first statement is correct while the second is not correct.
Both statements are not correct.

•Which of the following changes occur to the plant cells that make up a piece of potato when placed in a concentrated salt solution?

The turgor pressure increases within the cytoplasm of plant cells.
The osmotic pressure decreases within the vacuoles of plant cells.
The plant cells undergo plasmolysis.
The cell wall of plant cells shrinks inward.

•The substance responsible for acquiring hardness and strength to the walls of the vessels and tracheids of herbaceous plants is ….

cellulose
Suberin
Lignin
cutin

Which of the following increases the ability of desert plants to withstand drought?

A
B
C
D

•Physiologic support in plants depends on:

Cellulose
Vacuole
Lignin
All of the above

•Which of the following does represent the physiologic support?

Water passage through the plasma membrane to the vacuole
increased thickness of the cell wall
Cellulose deposition
Suberin deposition

•The swelling of the plant cells when watering is due to …… …

the entering of water into their cells by osmosis phenomenon.
the exit of sugar out of their cells by diffusion phenomenon.
the entering of water into their cells by diffusion phenomenon.
the exit of sugar out of their cells by osmosis phenomenon.

•Which of the following cells acquires a physiological support on watering plant ?

The sieve tubes in phloem.
Xylem vessels.
Stone cells.
Parenchyma cells.

Three identical pieces of potato were placed in three salt solutions of different concentrations for 15 minutes, and changes were represented in the following Graph In the light of this which of these solutions has the most salt concentration.

A
B
C
D

•the decrease in concentration of the sap vacuole solution of a plant cell indicates that

The cell loses its physiological support.
The cell gains a physiological support.
The cell loses its structural support.
The cell gains a structural support.

•The cellular structure that is mainly responsible for preventing bursting a plant cell whose osmotic pressure is 40 milliosmoles per liter, when placed in a beaker containing distilled water, is ……….

Cell membrane.
Sap vacuole.
Cell wall.
Mitochondria.

•The apple fruit doesn’t shrink for a long period of time, due to the deposition of………. substance.

suberin
lignin
cellulose
Cutin

•Which support does affect the whole cell?

Structural support
Physiological support
Mixed support
All of the above

•The physiologic support depends on:

Capillary property
Imbibition
Root pressure
osmosis

•The cell swells when the water enters it by:

Capillary property
Imbibition
Root pressure
osmosis

•Study the following figures, then answer:

•Which of the previous cells contain physiological and structural support together?….

Cells (1) only.
Cells (2) only.
Cells (1) and (2) together.
Cells (1) and (3) together.

•Study the following figures, then answer:

•Which of the previous cells contain a physiological support only? ……

Cells (1) only.
Cells (3) only.
Cells (1) and (2) together.
Cells (2) and (3) together.

•Plant cell’s tension is evidence of that:

The cell gains structural support.
The cell is full of water.
The cell loses water.
The cell loses physiological support.

•Which of the following is an example of structural support in plants?

Parenchyma cells
phloem tissues
Collenchyma cells
All of the above

•The structural support depends on the deposition of:

Cutin
Cellulose
Suberin
All of the above

•The tension of the plant cell walls indicates that the plant……….

acquires a physiological support.
loses a physiological support.
acquires a structural support.
loses a structural support.

•Which choice doesn’t agree with the rest choices according to the occurrence of support in the plant? ··········

Cellulose.
Chitin
Lignin.
Suberin

Which of the following is correct about the support responsible for the straightening of herbaceous plants when irrigated with water

A
B
C
D

•The plant cell walls gain rigidity due to the deposition of:

Cutin
Suberin
Cellulose
Cellulose and lignin

•”Most mature living plant cells contain large-sized sap vacuoles”,

“And these vacuoles help the cells in water absorption by diffusion” ……….

The two statements are correct and related.
The two statements are correct and unrelated.
The first statement is correct and the second statement is wrong.
The first statement is wrong and the second statement is correct.

•The straightness of a plant stem after watering is due to the presence of……….

sap vacuoles
nuclei.
cell walls.
mitochondria.

•All of the following cells are examples of structural support in the plant, except

Collenchyma cells
Fibers
Stone cells
Parenchyma cells

•The opposite figure represents the concentration of the cell sap in several cells: the most of physiologically supported cell is :

X
Y
Z
L

sec 3 – ch 1: Support and movement in living organisms

Quiz Summary

Information

Results

Results

Categories

1. Question

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question

9. Question

10. Question

11. Question

12. Question

13. Question

14. Question

15. Question

16. Question

17. Question

18. Question

19. Question

20. Question

21. Question

22. Question

23. Question

24. Question

25. Question

26. Question

27. Question

28. Question

29. Question

30. Question