Life of Plants

Question 1

Function of the Plumule?

Answer 1

The first shot to grow upwards to the sun for photosynthesis.

Question 2

Function of the Cotyledons?

Answer 2

Stores food for energy for the seed.

Question 3

Function of the Radicle?

Answer 3

Absorbs water + anchors the plant as its the first root.

Question 4

Function of the Micropyle?

Answer 4

Absorbs water in the seed for germination.

Question 5

Function of the Testa?

Answer 5

Protects the seed.

Question 6

Why do seeds need to be dispersed away from the parent plant?

Answer 6

Because otherwise plants will compete for light, water and nutrients from the soil.

Question 7

What are the 3 things needed for germination?

Answer 7

Water, oxygen + sunlight.

Question 8

What are the two organelles which are only in plant cells?

Answer 8

Chloroplast, Cell wall.

Question 9

What are the characteristics of Primary Growth?

Answer 9

Increases the length in plants, mitosis cell division, results in the height of a plant, involves the tissue apical meristem.

Question 10

What are the characteristics of Secondary Growth?

Answer 10

Increases the thickness of the plants, mitosis cell division, results in the girth of a plant, involves the tissue cambium.

Question 11

Direction of Movement in Osmosis?

Answer 11

The area of high concentration to the area of low concentration.

Question 12

What tissue is involved in Osmosis?

Answer 12

Root hairs.

Question 13

What tissue is involved in Transpiration?

Answer 13

Xylem.

Question 14

What tissue is involved in Translocation?

Answer 14

Phloem.

Question 15

What is moved in Transpiration?

Answer 15

Water.

Question 16

What tissue is involved in Translocation?

Answer 16

Sucrose/ sugar.

Question 17

What is the direction of movement in Transpiration?

Answer 17

From the soil to the roots to the stems to the leaves.

Question 18

What is moved in Osmosis?

Answer 18

Diffusion of water molecules.

Question 19

What is the direction of movement in Translocation?

Answer 19

Up or down the plant?

Question 20

Function of the Cuticle?

Answer 20

Protects the mesophyll layer.

Question 21

Function of the Epidermis?

Answer 21

Provides protection for the plant.

Question 22

Function of the Palisade Mesophyll?

Answer 22

Contains lots of chloroplasts for photosynthesis.

Question 23

Function of the Spongey Mesophyll?

Answer 23

Carbon Dioxide diffuses into them + oxygen diffuses out of them.

Question 24

Function of the Vascular Tissues?

Answer 24

Transports water, minerals + sugars throughout the plant.

Question 25

Function of the Stomata?

Answer 25

Controls the flow of gases in and out of the leaf.

Question 26

Function of the Guard Cells?

Answer 26

Uses osmotic pressure to open and close the stomata.

Question 27

Equation for Photosynthesis?

Answer 27

Carbon dioxide + water ---->Light energy ----> chlorophyll----> glucose + oxygen.

Question 28

What structure in the roots increases the water absorption?

Answer 28

Root hairs.

Question 29

Why are air sacs found within the spongy mesophyll layer?

Answer 29

Because they spongy mesophyll diffuses carbon + oxygen.

Question 30

Function of the Stigma?

Answer 30

Collects pollen grains.

Question 31

Function of the Style?

Answer 31

Allows pollen tubes to travel to deliver sperm cells.

Question 32

Function of the Ovule?

Answer 32

Produces the female cell.

Question 33

Function of the Sepals?

Answer 33

Encloses and protects the reproductive structures.

Question 34

Function of the Petal?

Answer 34

Attracts Pollinators.

Question 35

Function of the Anther?

Answer 35

Produces and disperses pollen.

Question 36

Function of the Filament?

Answer 36

Carries nutrients to the anther and holds it up.

Question 37

What is the male reproductive part of the flower?

Answer 37

Stamen.

Question 38

What is the female reproductive part of the flower?

Answer 38

Pistil.

Question 39

What does the Stamen part of the power consist of?

Answer 39

The filament and the anther.

Question 40

What does the Pistil part of the power consist of?

Answer 40

The Stigma, Style and Ovary.

Question 41

What are the characteristics of an insect pollinated flower.

Answer 41

Brightly coloured petals, strongly scented, small amount, big and sticky pollen, anthers close to the centre, stigma deep inside the petals and sticky.

Question 42

What are the characteristics of wind pollinated flower.

Answer 42

Small and dull petals, mild scent, big amount, small and light pollen, anthers high in the air, stigma's outside the small petals and feathery.

Question 43

What is the difference between pollination and fertilisation?

Answer 43

Pollination is the transfer of pollen grains from an anther to the stigma. Fertilisation is he fusion of the female and male gametes to produce a zygote.

Question 44

Which part in the flower becomes the seed in fertilisation?

Answer 44

Ovary/mature ovule.

Question 45

Which part of the flower becomes the fruit?

Answer 45

Ovary wall.