Question # 1

Cutting down of trees is known as:

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Habitat loss

Deforestation

Extinction

None of these

Which event distinguishes meiosis form mitosis?

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Condensation of chromosomes

Loss of the nuclear membrane

Formation of metaphase plate

Pairing of homologous chromosomes

Rough endoplasmic reticulum is the area in a cell where _________ are synthesized.

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Polysacchrides

Proteins

Lipids

DNA

Characteristics of fungi are .

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Cellular eukaryotes

Lack chlorophyll

Heterotrophic

All of the above

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

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Before meiosis 1

Before meiosis 2

During Meiosis 1

Do not duplicate

Science is based on ____________

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Obsrvation

Theory

Hypothesis

Law

A bacterial cell contains about _______________

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10,000

20,000

30,000

40,000

.................. is most abundant substance in human body.

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Water

Carbon

Nitrogen

Phosphorus

Ribosomes occur in groups called .................. .

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Nucleosomes

Polysomes

Dictyosomes

All

Redox reactions involve exchange of ____________

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Electrons

Protons

Neutrons

Atoms

Five senses are involved in:

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Hypothesis

Observations

Deduction

Experiment

Prolonged Vitamins A deficiency can lead to ................... blindness.

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Day

Night

Both

None

Which of the following is a function of human blood?

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It regulates body temperature

It transports wastes

It provides defence

All of the above

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