Biology - Mock Test 130

Question 1291

The spherical structured organelle that contains the genetic material is ?

A) Cell walls B) Ribosomes C) Nucleus D) Mitochondria

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Question 1292

Cell was discovered by ?

A) Leeuwenhoek B) Robert Hooke C) Robert Swanson D) Robert Brown

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Question 1293

Which of the following is unique to mitosis and not a part of meiosis?

A) Homologous chromosomes pair and form bivalents B) Chromatids are separated during anaphase C) Homologous chromosomes behave independently D) Homologous chromosomes crossover

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Question 1294

The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is ?

A) splitting of the centromeres B) splitting of the chromatids C) replication of the genetic material D) condensation of the chromatin

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Question 1295

Which of the following events takes place during Diplotene stage of prophase I of meiosis?

A) Compaction of chromosomes B) Formation of synaptonemal complexes C) Formation of recombinational nodules D) Dissolution of synaptonemal complex

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Question 1296

In the somatic cell cycle?

A) In G1 phase DNA content is double the amount of DNA present in the original cell B) A short interphase is followed by a long mitotic phase C) DNA replication takes place in S-phase D) G2 phase follows mitotic phase

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Question 1297

Cells in G0 phase of cell cycle ?

A) Exit cell cycle B) Enter cell cycle C) Suspend cell cycle D) Terminate cell cycle

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Question 1298

If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into?

A) Prophase B) Anaphase C) Telophase D) Metaphase

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Question 1299

Synapsis occurs between ?

A) mRNA and ribosomes B) A male and a female gamete C) Two homologous chromosomes D) Spindle fibres and centromere

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Question 1300

The non-sister chromatids twist around and exchange segments with each other during ?

A) Leptotene B) Diakinesis C) Diplotene D) Pachytene

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