A biologist ground up some plant leaf cells and then centrifuged the mixture to fractionate the organelles. Organelles in one of the heavier fractions could produce ATP in the light, whereas organelles in the lighter fraction could produce ATP in the dark. Explain these results. What is present in the light fractionate that is absent in the heavier fractionate? What is present in the heavier fractionate, that is absent in the light fractionate? Why are these components important to a clear explanation?

Chloroplasts and mitochondria.

Explanation:

In the given question,

1. The heavy fraction produces ATP in the presence of light which means that the light is required for the synthesis of ATP and the organelle associated with the light is Chloroplast.

2. The lighter fraction produces ATP in the dark condition that means no light is required for ATP synthesis and the organelles associated with this is known as Mitochondria.

These organelles can be predicted based on their role in the ATP synthesis and the requirement of light condition for ATP synthesis.

Thus, Chloroplasts and mitochondria is correct.

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.