Biology Past Questions

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2586

Which of the following vertebrae provide articulating surfaces for the ribs?

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2587

The ventricles of the mammalian heart have thicker
muscular walls than the auricles because the

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2588

The physical and chemical factors which affect the life of organisms in an environment are described as

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2589

Which of the following orders correctly represents the trend in eutrophication?

A. Lack of oxygen → Death of aquatic organisms → Massive algal growth
B. Excess nitrates and phosphates → Massive algal growth → Lack of oxygen → Death of aquatic organisms
C. Heavy mineralization → Lack of oxygen → Massive algal growth
D. Excess nitrates and phosphates → Lack of oxygen → Massive algal growth → Death of aquatic organisms

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2590

Two tall plants were crossed; some of their offsprings were tall and others short the possible genotypes of the parent plants were