Plants

Question 1

Meristem

Answer 1

A plant tissue capable of mitosis

Question 2

Herbaceous

Answer 2

Do not contain wood ( or lignin)

Question 3

Transpiration

Answer 3

Transpiration the loss by evaporation of water vapour from the leaves and other aerial parts of a plant

Question 4

Lenticels

Answer 4

Openings in the stems of plants that allow gas exchange

Question 5

Stimulus

Answer 5

Anything that causes a reaction in an organism or in any of its parts

Question 6

Response

Answer 6

The activity of an organism or a cell as a result of a stimulus

Question 7

Tropism

Answer 7

A change in the growth of a plant due to an external stimulus

Question 8

Phototropism

Answer 8

The change in the growth of a plant in response to light usually from one direction

Question 9

Hydrotropism

Answer 9

A change in growth of a plant in response to water

Question 10

Geotropism

Answer 10

The change in growth of a plant in response to gravity

Question 11

Thigmotropism

Answer 11

A change in the growth of a plant in response to touch

Question 12

Chemotropism

Answer 12

A change in the growth of a plant in response to chemicals

Question 13

Growth regulator

Answer 13

A chemical that controls the growth of a plant

Question 14

Végétative propagation

Answer 14

Asexual reproduction in plants

Question 15

Runners

Answer 15

Horizontal stems that run or grow above the ground from which new plants grow

Question 16

Bulb

Answer 16

A modified bud

Question 17

Asexual reproductikn

Answer 17

Involves only one parent

Question 18

Sexual reproduction

Answer 18

Involves the union of two sex cells or gametes

Question 19

Gamete

Answer 19

A haploid sex cell capable of fusion

Question 20

Stamen

Answer 20

The male parts of a flower

Question 21

Carpel

Answer 21

The female parts of the flower

Question 22

Pollination

Answer 22

The transfer of pollen from an anther to a stigma of a flower from the same species

Question 23

Self-pollination

Answer 23

Involves the transfer of pollen from an anther to a stigma on the same plant

Question 24

Cross-pollination

Answer 24

Involves the transfer of pollen from the anther of one plant to the stigma of another

Question 25

Fertilisation

Answer 25

The union of two gametes or sex cells to for a zygote

Question 26

Endosperm

Answer 26

The product of the second sperm nucleus joining with the two polar nuclei that becomes a triploïde endosperm nucleus. This divides by mitosis and act as a food store for fats protein and starch

Question 27

Cotyledon

Answer 27

A seed leaf

Question 28

A non-endospermic seed

Answer 28

Contains no endosperm when fully formed

Question 29

Endospermic seed

Answer 29

Contains som endosperm when fully formed

Question 30

Radicle

Answer 30

The part of the plant embryo from which the root develops

Question 31

Plumule

Answer 31

The part of the embryo of the plant that develops into the shoot

Question 32

Fruit

Answer 32

A developed ovary

Question 33

Dispersal

Answer 33

The transfer of a seed or fruit away from the parent plant

Question 34

Dormancy

Answer 34

A resting period when a seed undergoes no growth and has little cell activity of metabolism

Question 35

Germination

Answer 35

The regrow then of the embryo after a period of dormancy if the environmental conditions are suitable

Question 36

Root tuber

Answer 36

A swollen underground root that remains dormant during winter and from which new plants may grow

Question 37

Cutting

Answer 37

A portion of a plant that is removed from a parent plant and is grown into a new independent plant

Question 38

Layering

Answer 38

The growth of a new plant from a stem that is still attached to the parent plant

Question 39

Micro propagation

Answer 39

The growth of plants from small pieces of tissue under sterile conditions using a specially selected medium

Question 40

Lignin

Answer 40

A strengthening material found in some plant cell walls

Question 41

Cohesion

Answer 41

The sticking of similar molecules to each other

Question 42

Adhesion

Answer 42

Occurs when different molecules stick together