Fossilization would occur when flora and fauna are buried by

Which of the following organs is $NOT$ vestigial in humans?

Replacement of original hard parts or even the soft tissues of the organisms by minerals is known as

In evolution,studies can be conducted at the molecular level. For example,proteins found in the blood of humans and apes are similar. The base sequences in nucleic acids and amino acid sequences in proteins are similar in related organisms. What do all these examples specifically refer to?

Choose the homologous organs from the given options.
$(I)$ Vertebrate hearts.
$(II)$ Vertebrate brains.
$(III)$ Thorn and tendrils of Bougainvillea and Cucurbita respectively.
$(IV)$ Vertebrate limbs.
The correct combination is:

Who noted that embryos never pass through the adult stages of other animals?