Hypodermis

Q.

Sclereids are found in

1. Fruit walls of nuts

2. Grit of guava and pear

3. Seed coats of legumes

4. All of these

Q.

Is collenchyma dead or alive?

Q. Hypodermis is a layer of tissue found under the epidermis. What kind of cell is likely to make up the hypodermis?

1. Collenchyma
2. Parenchyma
3. Sclerenchyma
4. Parenchyma and Sclerenchyma

Q.

Hypodermis of monocot stem is:

1. Collenchymatous

2. Sclerenchymatous

3. Parenchymatous

4. Hypodermis is absent in monocots

Q.

Sclerenchyma cells are dead cells.

1. True
2. False

Q.

Lignified elongated dead cells are ---------------------

1. Parenchyma

2. Collenchyma

3. Sclerenchyma

4. Epidermis

Q. Difference between parenchyma, chollenchyma and sclerenchyma

Q. How does lamellate collenchyma differ from lacunate collenchyma?

Q.

What are the characteristics of sclereids?

Q. Which of the following is not a functional attribute of collenchymatous tissue?

1. Protecting plant parts from stress and strain
2. Provides flexibility, elasticity and mechanical support
3. Stores air for maintaining buoyancy in hydrophytes
4. Stores chlorophyll in young dicot stem and performs photosynthesis

Q.

Tyloses are found in

1. Sclereids

2. Sclerenchyma Xylem

3. Sclerenchyma phloem

4. Sclerenchyma fibres

Q. The term parenchyma was given by

1. Schleiden
2. Grew
3. Strasburger
4. Sachs

Q. Hypodermis is a layer of tissue found under the epidermis. What kind of cell is likely to make up the hypodermis?

1. Parenchyma
2. Collenchyma
3. Sclerenchyma
4. Parenchyma and Sclerenchyma

Q. Which tissue provides structural support and protection against breakage?

1. Collenchyma
2. Sclerenchyma
3. Parenchyma
4. Epidermis

Q. Edible part of pear fruit is gritty due to

1. Macrosclereids
2. Malpighi cells
3. Brachysclereids
4. Osteosclereids

Q. Assertion :Thick cuticle is mostly present in disease resistant plants. Reason: Disease causing agents cannot grow on cuticle and cannot invade the cuticle.

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. Assertion is incorrect but Reason is correct

Q. Give the characteristics and role of the following:
(c) Sclereids

Q.

Where can collenchyma be seen?

Q. Hypodermis is unique to monocot stem and if it is present in roots, it is:

1. Collenchymatous
2. Parenchymatous
3. Sclerenchymatous
4. Both a and b

Q. in a dicot stem is made up of collenchyma.

1. Hypodermis
2. Epidermis
3. Pith
4. Bundle sheath

Q. Hypodermis is unique to monocot stem and if it is present in roots, it is:

1. Collenchymatous
2. Parenchymatous
3. Sclerenchymatous
4. Both a and b

Q.

Give any two characteristics to identify the sclereids.

Q. What we call the parenchyma cells that are made to divide under controlled laboratory conditions during plant tissue culture

Q. The term parenchyma was given by

1. Grew
2. Sachs
3. Schleiden
4. Strasburger

Q. in a dicot stem is made up of collenchyma.

1. Hypodermis
2. Epidermis
3. Pith
4. Bundle sheath

Q. Mention one significant difference between each of the following:
(i) Parenchyma and Sclerenchyma.
(ii) Epistasis and dominance.
(iii) Hormones of ovulatory phase and hormones of luteal phase.
(iv) Symplastic movement and apoplastic movement.
(v) Phenotype and Genotype.

Q. Which combination of tissues acts together to provide the support to the hypocotyl of a seedling?

1. Epidermis and collenchyma
2. Xylem and parenchyma
3. Epidermis and parenchyma
4. Xylem and phloem fibres

Q. Hypodermis is unique to monocot stem and if it is present in roots, it is:

1. Collenchymatous
2. Parenchymatous
3. Sclerenchymatous
4. Both a and b

Q. What is collenchyma? Explain its structure and function in plant body of a herbaceous angiosperm?