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Evolution

Question
CBSEENBI12002729
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About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and

  • phosphorus and sulphur

  • sulphur and magnesium

  • magnesium and sodium

  • calcium and phosphorus

Solution

A.

phosphorus and sulphur

About 98% of the mass of every living organisms including bacterium and human beings is composed of just six elements i.e., Carbon (C), Hydrogen (H), Nitrogen (N), Oxygen (O), Phosphorus (P) and Sulphur (S).

Some More Questions From Evolution Chapter

What is meant by the term fossil ?

What is the type of evolution in which the same structure developed along different directions due to adaptations to different needs ?

Name the different eras of geologic time scale.

What is single step large mutation?

Consider a thorn in Bougainvillea and a tendril in cucurbita. Are these two organs homologous or analogous ? Give reason.

Give two examples that represent adaptive radiation.

Which theory attempts to explain to us the origin of universe?

Evolution is a discontinuous process. Is it correct ?

Give the three key factors of the modern concept of evolution.

Which other term can be used for natural selection ?

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