Lesson 1 - Living tissues

Question 1

What is a tissue?

Answer 1

A group of cells of similar type that has been modified to perform fuctions in the body

Question 2

Which part of the root is soft and light coloured?

Answer 2

The growing part

Question 3

Which part of the root is rough and dark coloured?

Answer 3

The mature part

Question 4

What is the end of the root called?

Answer 4

The root cap

Question 5

What are the two divisions of plant tissues according to their ability of cell division?

Answer 5

1. Permanent tissues
2. Meristematic tissues

Question 6

What are meristematic tissues?

Answer 6

The tissues with cells that divide actively through mitosis to produce new cells

Question 7

What tissue causes the plant to grow?

Answer 7

Meristematic tissue

Question 8

6 Features of meristematic tissues

Answer 8

1. Consists of small-sized living cells
2. No intercellular spaces or intercellular spaces are not prominent
3. A distinct nucleus is present
4. No large vacuoles but small vacuoles could be present
5. No chloroplasts
6. A lot of mitochondria

Question 9

What are the 3 types of meristematic tissues?

Answer 9

1. Apical meristems
2. Intercalary meristems
3. Lateral meristems

Question 10

The 3 places where apical meristems are found in the plant

Answer 10

1. Shoot apex
2. Root apex
3. Axillary buds

Question 11

Which meristematic tissue increases the plant’s height?

Answer 11

Apical meristems

Question 12

Where in the plant are intercalary meristems found?

Answer 12

Nodes

Question 13

Plants belonging to which family have intercalary meristems?

Answer 13

Grass family

Question 14

What do intercalary meristems do?

Answer 14

Increase the length of internodes

Question 15

Where are lateral meristems found in the plant?

Answer 15

Laterally in stems and roots

Question 16

Lateral meristems are found ………. to the longitudinal axis of the plant

Answer 16

Parallel

Question 17

Which meristematic tissue increases the diameter of the plant?

Answer 17

The lateral meristem

Question 18

An example for lateral meristems

Answer 18

The cambium tissue found in dicots

Question 19

What is a permanent tissue?

Answer 19

A tissue that has lost its ability to divide but is specialized to perform particular functions

Question 20

What are the two types of permanent tissues according to their nature?

Answer 20

1. Simple permanent tissues
2. Complex permanent tissues

Question 21

What is the difference between simple and complex permanent tissues?

Answer 21

Simple permanent tissues comprise of one type of cell whereas complex permanent tissues comprise of different types of cells

Question 22

What are the factors that determine the identification of simple permanent tissues?

Answer 22

Shape of the cell and nature of the cell wall

Question 22

What are the factors that determine the identification of simple permanent tissues?

Answer 22

Shape of the cell and nature of the cell wall

Question 23

What are the 3 types of simple permanent tissues?

Answer 23

1. Parenchyma
2. Collenchyma
3. Sclerenchyma

Question 24

What is the parenchyma tissue?

Answer 24

The tissue that forms the soft parts of the plant body

Question 25

What is the most abundant tissue found in plants?

Answer 25

The parenchyma tissue

Question 26

5 Features of the parenchyma tissue

Answer 26

1. Consists of living cells 2. Cells are isodiametric (roughly spherical) with large central vacuoles 3. The nucleus is present peripherally in the cytoplasm 4. The cell wall is thin and made up of cellulose 5. Intercellular spaces are present

Question 27

5 Places where the parenchyma tissue is present in the plant

Answer 27

1. Cortex and pith of the plant stem 2. Fleshy parts of fruits 3. Leaves (mesophylls) 4. Pith and cortex of roots 5. Seeds (endosperm)

Question 28

4 Functions of the parenchyma tissue

Answer 28

1. Photosynthesis 2. Food storage 3. Water storage 4. Providing support

Question 29

What are the two types of mesophylls?

Answer 29

1. Palisade mesophylls 2. Spongy mesophylls

Question 30

Where does photosynthesis take place in parenchyma tissues?

Answer 30

Within the chloroplasts of the mesophyll

Question 31

What are tissues that store food called?

Answer 31

Storage tissues

Question 32

5 Examples for parenchyma tissues storing food

Answer 32

1. Potato tuber 2. Carrot roots 3. Sweet potato roots 4. Papaw fruit 5. Banana fruit

Question 33

.......... plants store water in parenchyma tissues as they have dry habitations

Answer 33

Xerophytic

Question 34

3 Examples for parenchyma tissues storing water

Answer 34

1. Aloe leaves 2.Bryophyllum leaves 3.Cactus cladode

Question 35

Where does water absorbed by herbaceous plants go in the parenchyma tissue?

Answer 35

The vacuole

Question 36

An example for a herbaceous plant

Answer 36

Balsam

Question 37

How does absorbing water into vacuoles provide support to the plant?

Answer 37

Because they become turgid when absorbing water

Question 38

What is the relevancy between parenchyma tissues and collenchyma tissues?

Answer 38

Collenchyma tissues are modified parenchyma tissues

Question 38

What is the relevancy between parenchyma tissues and collenchyma tissues?

Answer 38

Collenchyma tissues are modified parenchyma tissues

Question 39

5 Features of the collenchyma tissue

Answer 39

1. Consists of living cells 2. Cells have a cytoplasm, nucleus and central vacuole 3. Cells are are elongated and polygonal in the cross section 4. The corners of cells are thick 5. Intercellular spaces may or may not be pesent

Question 40

Where are collenchyma tissues found in the plant?

Answer 40

Inside the epidermis of herbaceous plants' stems | Also found in the veins of dicot leaves