Answer:
a. Excretion is accomplished by paired protonephridia with flame cells in every segment of the body. True
Most anelids have structures called metanephrids or protonephridia. Both structures are homologous to the kidneys and have the function of excresion, A pair are present in every segment of the body.
b. If the organs in one segment fail, the organs of another segment will still function. False
It is false because all segments are interrelated and have different functions depending on their location.For example, the first segment is where the sensory appendages are, such as the antennae and the eyes. The second segment is where the mouth is. There are a series of parapod segments to move, collectively called metameres and ends in a terminal portion called pigidium, where the anus is located.
c. Annelids possess both circular and longitudinal muscles that produce waves of contraction that are propagated down through the points eBookseries of segments.True
True because anelids have circular and longitudinal muscles that serve to function the hydrostatic skeleton.
d. Segmentation has allowed for specialization in the anterior of the annelid body, which has provided for a more sophisticated nervous system. True
True because the segmentation allows to have a nervous system formed by a ventral nerve cord provided with ganglia and lateral nerves in each segment.
Answer:
Plants can be used to make materials.
Explanation:
Plants are important living organisms and they can be used in many ways. Some plants can be used as foods, some plants are used as raw materials for making medicines and other herbal products. Plants, such as cotton are used to make clothing materials and dead and decaying plants serves as fertilizer that add nutrients to the soil. Some other examples of a beneficial application of plants in human society would be that plants can be used for food. With that, they provide a very important source of nutrients for humans.
Answer:
Nitrogen cycle is a biogeochemical cycle that involves the circulation and conversion of nitrogen into different forms among the living and non-living components of the environment. The following are the steps in nitrogen fixation.
1 Nitrogen fixation.
2 Plants absorb nitrates and conduct assimilation.
3 Nitrogen flows through the food chain as a primary consumer eats the plant, and a secondary consumer eats the primary consumer.
4 A consumer releases waste and ammonification occurs to convert ammonia into nitrates and ammonium.
5 Nitrification occurs to convert ammonium into nitrates. Denitrification occurs to release nitrogen back to the atmosphere.
For number 1, you need the chart so I can't answer it. Sorry.
For number 2, your answer will be B because when he said "survival of the fittest", he meant that organisms with the correct adaptations for survival would live and reproduce, passing those adaptations down the line.
For number 3, your answer will be D because, like I said above, animals that have advantageous traits will survive and reproduce and pass along those traits. Which, essentially, is the process of evolution.
I hope I was able to help you. Best of luck!