unit B section 1

Question 1

the function/structure of a stem

Answer 1

Water and nutrients are transported between the leaves and the roots.
Stems support the leaves and ensure the leaves receive adequate light.
The food produced in the leaves is stored in the stem.

Question 2

the function/structure of a leaf

Answer 2

produces food for the plant by collecting energy from the sun and changing it to chemical energy (food).
take in and release oxygen and carbon dioxide.
water enters and leaves the cells of the leaves through the guard cells
(stoma/stomata)

Question 3

the function/structure of a seed

Answer 3

Seeds contain an embryo that will form a new plant. They also contain a food supply for the embryo.

Question 4

the function of a cone/flower is

Answer 4

Both cones and flowers have and female parts for reproduction.

Question 5

osmosis

Answer 5

Water from the soil enters root cells by a process called osmosis.
When the concentration of water in the soil is greater than the concentration of the water in the roots, water moves into the root cells.

Question 6

diffusion

Answer 6

diffusion happens when there is a difference in concentration. Particles move from an area of high concentration to low concentration. Ex - food colouring in water or perfume in a room active transport is another process that enables a plant to get nutrients. It requires energy to move these substances in and out of the plant.

Question 7

capillary action

Answer 7

Another process that helps water move up through a plant is called capillary action.
Water particles are attracted to each other and to the sides of the tubes in the roots and stems This attraction causes water particles to ¨stick” together and move up inside the plant, moving against gravity.

Question 8

transpiration

Answer 8

Water particles evaporate from the surface of the leaves and more water particles move up within the plant to take their place. The loss of water through evaporation is called transportation.

Question 9

photosynthesis

Answer 9

The energy of the sun is trapped in the leaves and changed into chemical energy. Carbon dioxide and water are used by the leaves in the process called photosynthesis, to make sugar and give off oxygen

Question 10

cellular respiration

Answer 10

During, plants cellular respiration carbon dioxide and let oxygen into their cells.

Question 11

seeding stage

Answer 11

Growth is very fast producing new leaves, roots, stems and their own food. Still need nutrients from the soil.

Question 12

adult stage

Answer 12

A plant is an adult when it produces reproductive structures
(flower or cone).

Question 13

ovary

Answer 13

ovules contain the female part of the flower.

Question 14

stigma

Answer 14

the male part of the flower and were the pollen is deposited

Question 15

nectar

Answer 15

what attracts the pollinators