Multiple Choice Questions

Advertisement

Select the wrong statement :

  • Cell wall is present in members of Fungi and Plantae

  • Mushrooms belong to Basidiomycetes

  • Mitochondria are the powerhouse of the cell in all kingdoms except Monera

  • Pseudopodia are locomotory and feeding structures in Sporozoans


D.

Pseudopodia are locomotory and feeding structures in Sporozoans

Pseudopodia are locomotory structures in sarcodines (Amoeboid).


Advertisement

Which one of the following precedes re-formation of the nuclear envelope during M-phase of the cell Cycle?

  • Decondensation from chromosome and reassembly of the nuclear lamina

  • Transcription from chromosome and reassembly of the nuclear lamina

  • Formation of the contractile ring and formation of the phragmoplast

  • Formaltion of the contractile ring and transcription from chromosomes


Independent assortment of gene occurs due to the orientation of chromosomes at

  • Metaphase-I of mitosis

  • Metaphase-I of meiosis

  • Metaphase-II of meiosis

  • Any phase of the cell division


The non-disjunction, in meiosis may result is extra copy of a chromosome in a sperm cell. During which phase the above phenomenon may occur?

  • Prophase-I, prophase-II

  • Prophase-I, prophase-II

  • Anaphase-I, anaphase-II

  • Anaphase-I, telophase-II


Post-mitotic gap phase is characterised by all, except

  • Synthesis of RNA and nucleotides

  • No change in DNA content

  • Synthesis of histone proteins

  • Growth phase of the hell


Advertisement

Viruses that infect bacterial multiplication and cause their lysis, are called

  • Lysozymes

  • Lipolytic

  • Lytic

  • Lysogenic


During meiotic division, the

  • homologous chromosomes are seperated

  • linkage is disturbed

  • homologous chromosomes do not segregate

  • All of the above


In cell cycle, during which phase chromosomes are arranged in equatorial plate?

  • Metaphase

  • Anaphase

  • Telophase

  • Prophase


The mitotic cell cycle is divided typically into four phases; G1, S, G2 and M. Considering a mitotic cycle time of 18 hrs; the distribution of period of time (in hrs) for each of these phases will be

  • G1 S G2 M
    1 3 5 9
  • G1 S G2 M
    9 1 3 5
  • G1 S G2 M
    9 5 3 1
  • G1 S G2 M
    3 5 9 1

Advertisement
<

During the G1- phase of cell division

  • RNA and proteins are synthesised

  • DNA and proteins are synthesised

  • cell prepares for M- phase

  • cell undergoes duplication


Advertisement