Tissues, Organs and Organ Systems

This statement about Homeostasis is incorrect:

Homeostatic mechanisms keep the internal environment constant despite wide changes in the external environment

Homeostasis is necessary for the survival of cells

Because of this, the fluctuations of the internal environment are of extremely narrow range as compared to that of the external environment

There is one system regulating the homeostatic activities

You can observe spongy mesophyll and xylem in the section of leaf. These are part of the same:

Tissue and organ

Organ and organism

Cell and organism

Cell and tissue

5. Which of the following lists the levels of body organization from smallest to largest?

Cell, tissue, organ, organ system, organism

Tissue, cell, organ, organ system, organism

Organism, organ system, organ, tissue, cell

Organ, organ system, organism, tissue, cell

If tissue level is not developed at the level of organization, which next level will not form?

Atomic level

Organ level

Molecular level

Organelle level

Which description of xylem is correct?

An organ used for transport

A tissue used for transport

An organ system used for conduction

A cell used for absorption

Which structure is at a different level of organization from the other three?

Lung

Liver

Neuron

Kidney

Which structure is not an organ?

Xylem

Flower

Artery

Spinal cord

What are the functions of xylem and phloem in green plants?

Transport of water, support and transport of sugars

Support and transport of water, transport of sugars

Transport of water, support and transport of sugars

Which of the following statements best describes homeostasis?

Keeping the body in a fixed and unaltered state

Altering the external environment to accommodate the body’s needs

Maintaining a near-constant internal environment

Dynamic equilibrium

Organisms have the ability to change and modify their internal conditions according to the environment through:

Thermoregulation

Excretion

All of the above

Osmoregulation

The table shows three functions of cells. Which row is correct?

Rod blood cell, xylem vessel, muscle cell

Root hair cell, red blood cell, muscle cells

Xylem vessel, root hair cell, muscle cell

Xylem vessel, root hair cell, red blood cell, muscle cell

The diagram shows tissues from the section of leaf. Which type of cells will perform photosynthesis?

2 and 5

1 and 4

2 and 3

3 and 6

The diagram shows a sample of material taken from an organism. Which level of organization does the sample show? (Nucleus, Nerve, Axon ending, Cell body)

Tissue

Cell

Organ

Organ system

The diagram shows cells in part of the leaf of a green plant. Which region contains cells that are responsible for the process of transport?

All of the above

Epidermis

Xylem

Phloem

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