141. Which organelles are covered with a double membrane?
(a) Ribosomes
(b) Vacuoles
(c) Centrioles
(d) Mitochondria
142. The longest part of the cell cycle is stage of?
(a) Interphase
(b) Resting stage
(c) Both of these
(d) None of these
143. Interphase may be divided into?
(a) 1
(b) 2
(c) 3
(d) 4
144. Xylem is composed of thick walled cell?
(a) Dead
(b) Live
(c) Both dead and live
(d) None of these
145. In which phase cell prepare itself for division?
(a) Interphase
(b) Growth phase
(c) Both of these
(d) Division phase
146. In which phase the cell divide into two daughter cells?
(a) Interphase
(b) Division Phase
(c) Growth phase
(d) None of these
147. Who was observed dividing cell?
(a) Walther Fleming
(b) Aristotle
(c) Robert Hooke
(d) None of these
148. The type of cell division which occur in somatic cells, in which cell divided into two daughter cells with the same number of chromosomes?
(a) Mitosis
(b) Meiosis
(c) Apoptosis
(d) None of these
149. Mitosis is divided into main phases’?
(a) 2
(b) 3
(c) 4
(d) 5
150 The division of nucleus is called?
(a) Cytokinesis
(b) Karyokinsis
(c) Mitosis
(d) Meiosis
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