Answer:
Tissue
Explanation:
Multicellular organisms are complex and every complex organism consist of building blocks. This is the case in the level of organization in living organisms. All living organisms are made up of CELLS. In multicellular organisms i.e. more than one, the cells that perform a similar role come together to form the TISSUE.
Tissues with similar function together forms the ORGAN. Organs that perform similar functions collectively makes up ORGAN SYSTEM. Based on this, the level of organization moves from the least complex "cells" to most complex "organ systems".
The order is as follows:
Cell-----> Tissue-----> Organ-----> Organ systems
Answer:
B
Explanation:
Most of the liver's mass is composed of cells known as hepatocyte. The hepatocytes are involved in series of functions including detoxification and excretion of exogenous and endogenous substances.
The Smooth Endoplasmic Reticulum (SER) is abundant in hepatocytes, and since the hepatocyte constitutes a large part of the liver, the SER is therefore, the most abundant organelle in the liver and an active participant in its detoxificating function.
The rough endoplasmic reticulum is more involved in protein synthesis
Answer:
Explanation:
Because they appeared quickly in geological time, and moulted like other arthropods, trilobites serve as excellent index fossils, enabling geologists to date the age of the rocks in which they are found. They were among the first fossils to attract widespread attention, and new species are being discovered every year.
They destroyed crops and land, leading to soil problems.
