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Standard XII

Biology

What Is Systematics?

From species ...

Question

From species to kingdom, the number of common characteristics among organisms goes on

Increasing

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Increasing to taxon family then decreases

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Decreasing

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Decreasing till class then increases

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Solution

The correct option is C Decreasing
The number of similar character specificity (decreases) as we go from lowest rank (species) to highest rank (kingdom).

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Similar questions

As we go from species to kingdom in a taxonomic hierarchy, the number of common characteristics

(a) will decrease

(b) will increase

(d) may increase or decrease

Q. Assertion :Order and other higher taxonomic categories are identified based on the aggregates of characters. Reason: As we go higher species to kingdom the number of common characteristics goes on decreasing.

Q. As the wavelength is increased from violet to red, the luminosity
(a) continuously increases
(b) continuously decreases
(c) increases then decreases
(d) decreases then increases

Parts (a) to (e) refer to changes in the properties of elements on moving from left to right across a period of Periodic Table. For each property, choose the correct answer.

(a) The non-metallic character of the elements :

(i) decreases, (ii) increases,

(iii) remains the same, (iv) depends on the period

(b) The electronegativity :

(i) depends on the number of valence electrons,

(ii) remains the same,

(iii) decreases,

(iv) increases.

(i) goes up and down (ii) decreases

(iii) increases (iv) remains the same

(d) The atomic size :

(i) decreases,

(ii) increases,

(iii) remains the same ,

(iv) sometimes increases and sometimes decreases.

(e) The electron affinity of the elements in groups 1 to 7 :

(i) goes up and then down.

(ii) decreases and then increases,

(iii) increases,

(iv) decreases.

Q. Assertion :Complexity of classification increases from kingdom to species. Reason: Common characters increase from kingdom to species.

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From species to kingdom, the number of common characteristics among organisms goes on

The correct option is C Decreasing The number of similar character specificity (decreases) as we go from lowest rank (species) to highest rank (kingdom).

The correct option is C Decreasing
The number of similar character specificity (decreases) as we go from lowest rank (species) to highest rank (kingdom).