Casparian Strip

Q. Which of the following is correct sequence of layers in typical monocot root (from outer surface to inside)?

1. Pericycle, cortex, endodermis, epiblema
2. Epiblema, endodermis, cortex, pericycle
3. Epiblema, cortex, endodermis, pericycle
4. Epiblema, pericycle, cortex, endodermis

Q. Casparian thickenings occur in the cells of _______.

1. endodermis of the stem
2. pericycle of the stem
3. endodermis of the root
4. pericycle of the root

Q. Assertion :Sclereids are found in fruit walls of nuts, the pulp of fruits like guava, pear, and sapota, and seed coats of legumes. Reason: Sclereids are spherical, oval or cylindrical, highly thickened dead cells with narrow lumen.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Assertion :In dicot stem, the endodermis is also referred to as the starch sheath. Reason: The cells of the endodermis are rich in starch grains.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Casparian strips occur in

1. cortex
2. pericycle
3. epidermis
4. endodermis

Q. Arrange the following in sequential order.
a) Autolysis and phagocytosis to remove the cell debris.
b) Wound closure by epidermal tissue.
c) Formation of the blastema.
d) Redifferentiation of cells.
e) The growth of blastema.
f) Dedifferentiation of tissues.

1. b, a, f, c, e, d
2. d, a, f, c, e, b
3. b, a, e, c, f, d
4. None of the above

Q. Which of the following shows the correct sequence of steps of plant tissue culture?

1. $Sterilisation\to Hardening\to Selectionofexplant\to Inoculation\to Regeneration\to Plantlettransfer$
2. $Selectionofexplant\to Inoculation\to Regeneration\to Sterilisation\to Hardening\to Plantlettransfer$
3. $Selectionofexplant\to Sterilisation\to Inoculation\to Regeneration\to Hardening\to Plantlettransfer$
4. $Hardening\to Sterilisation\to Selectionofexplant\to Inoculation\to Regeneration\to Plantlettransfer$

Q. Transport proteins of which layers of root acts as control points where a plant adjust the quality and types of solutes that reaches the xylem?

1. Hypodermis
2. Pith
3. Endodermis
4. Pericycle

Q. The Casparian strip in dicots is most commonly found

1. between secondary xylem and primary phloem
2. between cells of stem endodermis
3. on four sides of root endodermal cells
4. below vascular cambium

Q.

Casparian strips are present in the___________of the root.

1. epiblema

2. cortex

3. pericycle

4. endodermis

Q.

Most cells of endodermis have thickened strips due to deposition of suberin and lignin. They are called as __

Q. Tepals of Gramineae is termed:

1. Glume
2. Ligule
3. Spur
4. Lodicules

Q. Most cells of endodermis have thickened strips due to deposition of suberin and lignin. They are called as .

1. pith
2. casparian strips
3. lignin strips
4. casparian rays

Q. Casparian strip occurs in ________.

1. epidermis
2. pericycle
3. endodermis
4. cortex

Q. Which of the following layers has a deposition of suberin in the anatomy of root or stem?

1. Epidermis
2. Endodermis
3. Pericycle
4. Pith

Q.

Casparian strips are present in the___________of the root.

1. epiblema

2. endodermis

3. pericycle

4. cortex

Q. Casparian strip occurs in ________.

1. epidermis
2. pericycle
3. endodermis
4. cortex

Q.

Casparian strip is found in

1. epidermis

2. pericycle

3. endodermis

4. endothecium

Q. Casparian strips occur in

1. cortex
2. epidermis
3. pericycle
4. endodermis

Q.

Most cells of endodermis have thickened strips due to deposition of suberin and lignin. They are called as __

Q. These are kinds of sclereids. Match the correct features with A, B and C (Note there can be more than one matching statement).
1. Brachysclereid 2. Trichosclereid
3. Osteosclereid 4. Form gritty texture in pulp of guava
5. Called stone cell 6. Called as rod cells
7. Form palisade covering of seeds of Pisum
8. Called as cone cell 9. Found in seed coats of fabaceae and leaves of xerophytes

1. A - 1, 4, 5, B - 3, 7, 8, 9, C - 2, 6
2. A - 1, 2, 5, B - 4, 6, 7, C - 3, 8, 9
3. A - 1, 4, 5, B - 2, 8, 7, C - 3, 6, 9
4. A- 1, 4, 5, B - 2, 6, 9, C - 3, 8, 7

Q. Pick the correct option for the statements given below.
Statement 1 - Casparian strips are present on the cell walls of the cells forming the endodermis.
Statement 2 - Casparian strips obstruct continuity of apoplast pathway.

1. Both statements are correct
2. Both statements are incorrect.
3. Statement 1 is correct but statement 2 is incorrect
4. Statement 1 is incorrect but statement 2 is correct

Q. Mechanical support to the cell is provided by

1. Golgi bodies
2. Microfibrils
3. Endoplasmic reticulum
4. Chromatids

Q. Most cells of endodermis have thickened strips due to deposition of suberin and lignin. They are called as .

1. pith
2. casparian strips
3. lignin strips
4. casparian rays

Q.

Water diffusion into endodermis takes place through

1. Passage cells

2. Lignified cells

3. Casparian strips

4. Suberized cells

Q. The components of plant collenchyma cell wall, an acid carbohydrate, is a polymer of which of the following?

1. Glucose
2. Mannose
3. Galacturonic acid
4. Alginic acid