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Biology 9th Class English Medium Chapter 5 Online Test MCQs With Answers

Question # 1

In which stage of the cell cycle most cells spend their lives?

Choose an answer

Prophase

Metaphase

Interphase

Telohase

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Question # 2

Which one of the following stages of cell division is very different for animal and plant cells?

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Prophase

Metaphase

Anaphase

Cytokinesis

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Question # 3

Modern classification (binomial nomenclature) is based on the work of:

Choose an answer

Caesalpino

John Ray

Tournefort

Carolous Linnaeus

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Question # 4

Cytokinesis in animals take place by:

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Furrow

Phragmoplast

Telophase

None of these

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Question # 5

Down's sayndrome is an autosomal non-disjunction of chromosomes number ............. .

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Question # 6

Prior to cell replicates or duplicates its genetic material , the products are connected by a centromere and are called:

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Sister chromosomes

Homologous chromosomes

Non-sister chromatids

Sister chromatids

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Question # 7

RNA, ribosomes and enzyme are synthesized during .............. .

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G2-phase

S-phase

G1-phase

Inretphase

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Question # 8

During which phase of mitosis spindles are formed?

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Interphase

Prophase

Metaphase

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Question # 9

the failure of replicated chromosomes to separate during meiosis is ............... .

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Disjunction

Non-disjunction

Both a & b

None

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Question # 10

During mitosis the number of chromosomes becomes ............... .

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Double

Remain same

Becomes Half

None

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Question # 11

How many cells die each day due to apoptosis in humans?

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50 - 70 Billions

50 - 70 Millions

50-70 trillions

20 - 30 Millions

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Question # 12

For mitosis, the chromosomes of the cells are duplicated during interphase. When do the chromosomes duplicated for meiosis?

Choose an answer

Before meiosis 1

Before meiosis 2

During Meiosis 1

Do not duplicate

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