Question

1)Give any 3 evidences of evolution and explain
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Answer 1

Answer:

In order to find evolutionary relationship among organisms, their common features have been looked upon, and evidences have been provided as follows:

a) Homologous Organs: According to Darwin, more closely related species have evolved from a common ancestor. The characteristics and fundamentally similar structures suggest the possibility of a common ancestor. Such phenomenon of similarity of structure due to common ancestry is known as homology and such organs are called homologous organs.

Characteristics: i) Similar in basic structures and have the same developmental origin.

ii) Have different functions in different organisms.

iii) For example- Lizard, man, bird, frog etc.

b) Analogous organs: The organs which have different origin and basic structures but show similar appearance and perform similar functions too, are called analogous organs and such phenomenon is known as analogy.

Characteristics: i) Differ in basic structure.

ii) Resemble each other in term of functions.

iii) For example- Bats.

C) Fossils: Turn over a manufactured product today, and you are likely to see a small sticker or tag that says what country it was made in. Like those tags, species bear the marks of where they came from. These signs of origin might come in the form of repurposed traits, traits that hurt a species chances of surviving or reproducing. Put simply, species are flawed, and it’s these flaws that clearly tell of their natural origin.

Answer 2

$\blue{\large\underline{\underline\mathtt{Question:-}}}$

Give any 3 evidences of evolution and explain ?

$\green{\large\underline{\underline\mathtt{Answers:-}}}$

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$\pink{\underline\mathtt{Homologous\:organs\: :-}}$

The phenomenon of similarity of structure due to common ancestry is known as homology and such organs are called as humologous organs.

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$\orange{\underline\mathtt{Analogous\:organs\: :-}}$

The organ which have different origin and basic structure but show similar appearance and perform similar functions are called as analogous organs.

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$\purple{\underline\mathtt{Fossils\:record\: :-}}$

The remains of impression of a Prehistoric plant or animal embedded in rock and preserved in petrified form is called as Fossils record.

$\red{\large\underline{\underline\mathtt{...................}}}$

Hope it will help u

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