Programmed cell death (PCD) is a tightly regulated process that is important in the growth and development of plants. In plants there are several tissues which become functional after undergoing PCD. Which of the following cells/tissues represent “functional corpses” arising due to PCD in plants?
(i) Cork cells in bark.
(ii) Sieve elements of phloem.
(iii) Companion cells of phloem.
(iv) Tracheary elements of xylem.
(A) (i) and (ii) only. (B) (ii), (iii) and (iv) only.

(C) (i) only. (D) (i) and (iv) only.

Open in App

Solution

Cork cells in bark and Tracheary elements of xylem are the functional corpses of PCD.

So Answer is Option D.

Suggest Corrections

Similar questions

Which of the following statements are correct?

(i) Companion cells are present in phloem.
(ii) Xylem transports water and minerals from roots to other parts of the plant.
(iii) Vessels of xylem are present in all plants.
(iv) Both xylem parenchyma and phloem parenchyma have nucleus.

Q. Plant cells responsible for the transport of water are dead when they are mature enough to act as water transport tissues. These cells include which of the following cell types?
I. Tracheids
II. Vessel elements
III. Sieve tube members
IV. Companion cells

Q. Choose the correct statements.
(i) Cell wall is present in both plant and animal cells.
(ii) Cell membrane is present only in plant cells.
(iii) Cell membrane is semi permeable.
(iv) Cell wall is mainly composed of cellulose.

Which of the following process / processes release heat ?
(i) condensation (ii) vaporisation (iii) freezing (iv) melting

(a) only (i) (b) only (iv) (c) (i) and (iii) (d) (ii) and (iv)

Which of the following is present only in plant cells?
I. A nucleus II. A cell wall III. A cell membrane IV. Cytoplasm V. Chloroplasts.

Join BYJU'S Learning Program

Cork cells in bark and Tracheary elements of xylem are the functional corpses of PCD. So Answer is Option D.

Cork cells in bark and Tracheary elements of xylem are the functional corpses of PCD.

So Answer is Option D.