B15: Growth

Question 1

Definition of growth

Answer 1

The permanent increase in size of an organism

Question 2

where does growth begin in flowering plants?

Answer 2

seeds

Question 3

Structure of the dicotyledon seed

Answer 3

Question 4

Label the seed

Answer 4

Question 5

label the external seed structure

Answer 5

Question 6

growth from seed to plant

Answer 6

Question 7

what is germination?

Answer 7

the process by which the embryonic plant in a seed grows into a seedling

Question 8

a seed contains the (1)___________ of a plant. The (1)________ consists of a (2)_______ or embryonic root, and a (3)_____________ or embryonic shoot. The (4)____________ contain food to be used by the radicle and plumule during germination. The radicle, plumule and cotyledons are surrounded by a seed coat called the (5)_________

Answer 8

1. embryo
2. radicle
3. plumule
4. cotyledons
5. testa

Question 9

what conditions do seeds need to germinate?

Answer 9

• water
• oxygen
• suitable temperature

Question 10

How does water enter the seed?

Answer 10

through the microphyte

Question 11

In which direction do these parts grow during germination?

1. Plumule
2. Radicle

Answer 11

1. upward towards light (phototropism)
2. downward toward gravity(geotropism)

Question 12

what is an apical meristem?

Answer 12

unspecialised dividing cells at the tip of the roots and shoots

Question 13

what is the lateral meristem

Answer 13

cylinders of tissue that extends the the lenght of the shoot and root

Question 14

ways to measure growth

Answer 14

• linear increase
• area increase
• numerical increase
• mass increase