Tissues, Organs, and Organ Systems

Question 1

State the hierarchy structure of multicellular organisms.

Answer 1

cell: basic unit of structure and function
tissue: group of cells with the same/similar function
organ: a group of tissues adapted to perform functions
organ system: a group of organs that work together.

Question 2

What is a vascular plant?

Answer 2

Land plants with tissues for transporting water and minerals.

Question 3

What is dermal tissue?

Answer 3

Made of epithelial cells and guard cells. it prevents water loss and invasion by insects and microorganisms

Question 4

What is vascular tissue?

Answer 4

made of trachieds, vessel elements, and sieve tube elements. It transports water, sugars, hormones and minerals.

Question 5

What is ground tissue?

Answer 5

Made of mesophyll cells and stores nutrients, performs photosynthesis, and provides structural support for vascular tissue.

Question 6

What are the three types of tissue in vascular plants?

Answer 6

Dermal, vascular and ground.

Question 7

What are the four types of tissue found in both invertebrate and vertebrate animals?

Answer 7

epithelial, connective, muscle and nervous.

Question 8

What is epithelial tissue?

Answer 8

Made of epithelial cells and goblet cells. it protects against infection, fluid loss and injury. It facilitates the absorption of gases and nutrients.

Question 9

What is connective tissue?

Answer 9

Made of red and white blood cells, fat cells, and bone cells. It connects and supports organs, transports materials around the body, stores energy, and fights infection.

Question 10

What is muscle tissue?

Answer 10

made of skeletal, smooth, and cardiac muscle cells. It provides structural support, movement and heat.

Question 11

What is nervous tissue?

Answer 11

Made of neurons and glial cells. It responds to external and internal stimuli and transmits nerve impulses that control movement.

Question 12

What are the three primary organs in plants?

Answer 12

Roots, stem, and leaf. (All are made of dermal, vascular, and ground tissues).

Question 13

What do the roots do as an organ?

Answer 13

Absorbs water and nutrients from soil, storing nutrients and anchoring plant.

Question 14

What does the stem do as an organ?

Answer 14

Elevates leaves and reproductive organs, transports water and nutrients to leaves, production of new cells and tissues.

Question 15

What does the leaf do as an organ?

Answer 15

Produces glucose and other nutrients through photosynthesis, removes excess water in transpiration.

Question 16

What are the two organ systems in plants?

Answer 16

Shoot and root.

Question 17

What is the shoot system composed of, and what does it do?

Answer 17

It is made of the stem, leaves and reproductive organs. It carries out photosynthesis, reproduction, and transports water and minerals.

Question 18

What is the root system composed of, and what does it do?

Answer 18

It is the roots. It anchors the plant, stores nutrients, absorbs water and nutrients, and forms symbiotic relationships with bacteria and fungi to support life processes.

Question 19

How many organ systems do humans have?

Answer 19

11.

Question 20

What is interdependency?

Answer 20

Where organ systems depend on eachother e.g. shoot and root systems in plants, or respiratory and circulatory systems in animals.

Question 21

Give an example of a lifestyle choice and its effects.

Answer 21

• Regular physical exercise
• Consuming a balanced diet
• sleep
• drinking alcohol
• smoking tobacco
• using painkillers
• using social media
• working