Free Anatomy Of Flowering Plants (Daily Quiz: 4) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Anatomy Of Flowering Plants (Daily Quiz: 4) Time:

Question-1

Identify the wrong statement in context of heartwood.

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Heartwood is the non-functional part of secondary xylem, hence, it does not conduct water and minerals.


Question-2

Which of the following meristems is responsible for extrastelar secondary growth in dicotyledonous stem?

(a)

(b)

(c)

(d)


Question-3

Which of the following is incorrect about isobilateral leaf?

(a)

(b)

(c)

(d)


Question-4

Palisade parenchyma is absent in leaves of:

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Palisade parenchyma is absent in leaves of Sorghum. It is a leaf tissue composed of columnar cells containing numerous chloroplasts in which the long axis of each cell is perpendicular to the leaf surface. The palisade parenchyma is usually directly beneath the epidermis of the upper surface of the leaf. The cells of the palisade parenchyma are cylindrical. Neighbouring cells look like the stakes of a palisade. Cells of the palisade parenchyma contain three to five times as many chloroplasts as those of the spongy parenchyma. The chloroplasts stay usually near the cell’s wall, since this adjustment guarantees optimal use of light.


Question-5

The __________ occurs in layers below the epidermis in dicotyledonous plants.

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

The collenchyma occurs in layers below the epidermis or outer layer of cells in young stems and in leaf veins in dicotyledonous plants. Collenchyma cells are elongated cells with irregularly thick cell walls that provide support and structure. Their thick cell walls are composed of the compounds cellulose and pectin.


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