class notes for Cell Biology or Cytology

Questions From Competitive Examination
1 A gymnospermic leaf carries 16 chromosomes. The number of number chromosomes in its
endosperm will be (CBSE 1996)
(a) 16 (b) 24
(c) 12 (d) 8
2 Lampbrush chromosoes are seen in which typical stage: (CBSE 1996)
(a) Mitotic anaphase (b) Mitotic prophase
(c) Mitotic metaphase (d) Meiotic prophase
3 Centromere is a part of: (CBSE 1997)
(a) Ribosomes (b) Mitochondria
(c) Chromosome (d) Endoplasmic reticulum
4 One function of telomeres in a chromosomes: (CBSE 2000)
(a) 'Seal' the ends of the chromosomes
(b) Help two chromatids to move towards poles
(c) Start RNA synthesis
(d) Identify the correct member of the homologous pair of chromosome
5 Extranuclear chromosomes occur in : (CBSE 2001)
(a) Peroxisome, Ribosome (b) Chloroplast and Mitochondria
(c) Mitochondria and Ribosome (d) Chloroplast and Lysosome
6 Which of the following occurs more than one and less than five in chromosoeme:
(a) Chromatid (b) Chromomere
(c) Centromere (d) Telomere




Answers
1 (d) 2 (d) 3 (c) 4 (a)
5 (a) 6 (d)