Cell Diversity

Question 1

What is a tissue?

Answer 1

a group of similar cells with the same function

Question 2

Name the 4 types of plant tissue.

Answer 2

dermal, vascular, ground, meristematic

Question 3

Name one type of dermal tissue.

Answer 3

epidermis

Question 4

Where is epidermis found?

Answer 4

found as a covering on leaves, stems and roots

Question 5

Function of epidermis?

Answer 5

protects the plant

Question 6

Vascular tissue consists of what 2 types of cells?

Answer 6

xylem and phloem

Question 7

Function of xylem?

Answer 7

transport water
(and support)

Question 8

Describe briefly xylem.

Answer 8

consist of hollow tubes with openings called pits that run from the roots up through the stem and into the leaves

Question 9

Function of phloem?

Answer 9

transport food

Question 10

Describe briefly phloem.

Answer 10

consists of a series of tube-like structures - sieve tubes

Question 11

Name the 4 main types of animal tissue.

Answer 11

epithelial
connective
muscle
nervous

Question 12

Connective tissue consists of?

Answer 12

a number of cells spread out in a matrix/material that is produced by the connective cells

Question 13

Function of connective tissue?

Answer 13

joins and supports other body structures

Question 14

Examples of connective tissue?

Answer 14

cartilage, bone, blood

Question 15

Nervous tissue is composed of?

Answer 15

nerve cells called neurons

Question 16

Function of nervous tissue?

Answer 16

carry electrical impulses to and from the brain and spinal cord, allowing the body control

Question 17

What is tissue culture?

Answer 17

the growth of cells in a sterile, nutrient rich medium outside the organism

Question 18

Why is sterility important for tissue culture?

Answer 18

they might contaminate the product

Question 18

Sterile meaning?

Answer 18

absence of all microorganisms

Question 19

In tissue culture, the medium must contain X to ensure cells have….

Answer 19

nutrients,
energy to grow

Question 20

What is micropropagation?

Answer 20

the growth of large numbers of plants from very small plant pieces

Question 21

3 benefits of micropropagation?

Answer 21

• large numbers of plants are produced in a short time
• plants grown in this way are genetically identical
• an inexpensive way to produce large numbers of similar plants

Question 22

Name the use of tissue culture in animals and plants.

Answer 22

skin grafts
micropropagation

Question 23

2 benefits of skin grafts?

Answer 23

• no need to remove skin from another part of the body
• new skin is identical to patient’s skin and isn’t rejected by their body

Question 24

What is an organ?

Answer 24

a group of similar tissues working together to carry one or more functions

Question 25

Name some plant organs.

Answer 25

roots stems leaves seeds fruits

Question 26

Name some animal organs.

Answer 26

stomach brain lungs liver kidney heart

Question 27

What is an organ system?

Answer 27

group of similar organs working together to carry out one or more functions

Question 28

Examples of human organ systems?

Answer 28

digestive, reproductive, endocrine

Question 29

Examples of plant organ systems?

Answer 29

flower, root system