The double helix structure, DNA, wasn’t discovered until 1953. Can you name any other discoveries made in the last hundred years that have had an impact on our knowledge about life as much as the discovery of DNA? What are some notable scientists that have made major discoveries in the fields of life science?

answer: 45

explanationyou have to add as well to be it could be

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.  

the correct answer is d