271397
Which of the following statement(s) is/are correct about epidermal tissue system?
1 It forms the outer-most covering of the whole plant body and comprises epidermal cells, stomata and the epidermal appendages - the trichomes and hairs.
2 Epidermal cells are parenchymatous with a small amount of cytoplasm lining the cell wall and a large vacuole.
3 Epidermis is often covered with a waxy thick layer called the cuticle which prevents the loss of water.
4 All of the above
Explanation:
(d)
Anatomy of Flowering Plants
271398
The given diagram show stomatal apparatus in monocots. Which one is correct option for $A,B$ and $C$ ?
1 A - Epidermal cells; B - Subsidiary cells; C chloroplast
2 A-Guard cells; B-Subsidiary cells; C - Stomatal pore
3 A - Guard cells; B - Epidermal cells; C - Guard cells
4 A - Epidermal cells; B - Subsidiary cells; C Guard cells
Explanation:
(d) Stomata are tiny pores, and composed of two bean shaped epidermal cells called guard cells which enclose stomatal pore.
Stomata are mostly present in epidermal layers of leaves and in other aerial parts like young stems, floral parts etc. Guard cells in dicots are kidney shaped and in monocots are dumb bell shaped. The guard cells may be surrounded by varying number of specialized epidermal cells called subsidiary cells or accessory cells.
Anatomy of Flowering Plants
271399
Which of the following types of cells is/are present in Gymnosperms?
I. Sieve cells
II. Companion cells
III. Albuminous cells IV. Sieve tubes
Select the correct answer from the codes given below:
1 I and III only
2 I, II and III only
3 II and IV only
4 All of the above
Explanation:
(a) Gymnosperms have albuminous cells and sieve cells. They lack sieve tubes and companion cells.
271397
Which of the following statement(s) is/are correct about epidermal tissue system?
1 It forms the outer-most covering of the whole plant body and comprises epidermal cells, stomata and the epidermal appendages - the trichomes and hairs.
2 Epidermal cells are parenchymatous with a small amount of cytoplasm lining the cell wall and a large vacuole.
3 Epidermis is often covered with a waxy thick layer called the cuticle which prevents the loss of water.
4 All of the above
Explanation:
(d)
Anatomy of Flowering Plants
271398
The given diagram show stomatal apparatus in monocots. Which one is correct option for $A,B$ and $C$ ?
1 A - Epidermal cells; B - Subsidiary cells; C chloroplast
2 A-Guard cells; B-Subsidiary cells; C - Stomatal pore
3 A - Guard cells; B - Epidermal cells; C - Guard cells
4 A - Epidermal cells; B - Subsidiary cells; C Guard cells
Explanation:
(d) Stomata are tiny pores, and composed of two bean shaped epidermal cells called guard cells which enclose stomatal pore.
Stomata are mostly present in epidermal layers of leaves and in other aerial parts like young stems, floral parts etc. Guard cells in dicots are kidney shaped and in monocots are dumb bell shaped. The guard cells may be surrounded by varying number of specialized epidermal cells called subsidiary cells or accessory cells.
Anatomy of Flowering Plants
271399
Which of the following types of cells is/are present in Gymnosperms?
I. Sieve cells
II. Companion cells
III. Albuminous cells IV. Sieve tubes
Select the correct answer from the codes given below:
1 I and III only
2 I, II and III only
3 II and IV only
4 All of the above
Explanation:
(a) Gymnosperms have albuminous cells and sieve cells. They lack sieve tubes and companion cells.
271397
Which of the following statement(s) is/are correct about epidermal tissue system?
1 It forms the outer-most covering of the whole plant body and comprises epidermal cells, stomata and the epidermal appendages - the trichomes and hairs.
2 Epidermal cells are parenchymatous with a small amount of cytoplasm lining the cell wall and a large vacuole.
3 Epidermis is often covered with a waxy thick layer called the cuticle which prevents the loss of water.
4 All of the above
Explanation:
(d)
Anatomy of Flowering Plants
271398
The given diagram show stomatal apparatus in monocots. Which one is correct option for $A,B$ and $C$ ?
1 A - Epidermal cells; B - Subsidiary cells; C chloroplast
2 A-Guard cells; B-Subsidiary cells; C - Stomatal pore
3 A - Guard cells; B - Epidermal cells; C - Guard cells
4 A - Epidermal cells; B - Subsidiary cells; C Guard cells
Explanation:
(d) Stomata are tiny pores, and composed of two bean shaped epidermal cells called guard cells which enclose stomatal pore.
Stomata are mostly present in epidermal layers of leaves and in other aerial parts like young stems, floral parts etc. Guard cells in dicots are kidney shaped and in monocots are dumb bell shaped. The guard cells may be surrounded by varying number of specialized epidermal cells called subsidiary cells or accessory cells.
Anatomy of Flowering Plants
271399
Which of the following types of cells is/are present in Gymnosperms?
I. Sieve cells
II. Companion cells
III. Albuminous cells IV. Sieve tubes
Select the correct answer from the codes given below:
1 I and III only
2 I, II and III only
3 II and IV only
4 All of the above
Explanation:
(a) Gymnosperms have albuminous cells and sieve cells. They lack sieve tubes and companion cells.
