Cell organelles are the parts of a living cell. All cells have a cell membrane and some cells have a cell wall. Which of the following has a cell wall? I. Plants II. Bacteria III. Fungi
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.
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.
the following is correct:
of all living organisms have a nucleus.
animal and plant cells have a well defined cell wall.
prokaryotes, there are no membrane bound organelles.
(d) Cells are formed de
novo from abiotic materials.