Answer:
choanoflagellates and sponges are sister groups
Explanation:
The choanoflagellates are small unicellular organisms belonging to the Protista kingdom. These microorganisms are collared flagellates morphologically similar to the choanocyte cells of animal sponges, which have a central flagellum surrounded by a collar of microvilli. In consequence, it has been suggested that choanoflagellates may represent the closest living relatives of primitive metazoans (i.e., they are sister groups to sponges). This hypothesis has recently been supported by both molecular phylogenetic and comparative genomic analyses.
In order to increase the rate of diffusion of materials in and out of the cell, the following modification can be done to the cell:
1. the shape of the cell can be changed to one that has high surface area to volume ration, for example sphere.
2.The cell can also divide into two in order to increase the surface area to volume ratio.
This is an ecosystem energy pyramid that illustrates how much energy is found at each trophic level of a food chain. Select all the statements about this pyramid that are TRUE.
Approximately 90% of energy from one trophic level is transferred to the next trophic level.
Looking at the total amount of energy in an ecosystem, most energy can be found in the primary consumers.
This energy pyramid explains why there are few tertiary consumers in most ecosystems.
Looking at the total amount of energy in an ecosystem, most energy can be found in the producers.
I think its false because you gain energy over the time you lose and have.
hope it helps
The carbon containing molecules in the giant kelp come from carbondioxide, wastes and other carbon containing simple molecules.
