19 diverse

Question 1

define osmosis

Answer 1

net movement of water across a partially permeable membrane
down a water potential gradient

Question 2

explain the importance of osmosis in plant support

Answer 2

water enters vacuole
pressure against cell wall
turgour
turgid cells (support plant)

Question 3

how could inserting a gene into a chromosome affect the functioning of other genes in the chromosome

Answer 3

-frameshift
-altered triplets
-a new gene could disable a functioning gene if inserted into it
-nearby genes switched on or off

Question 4

how can tourism lead to an increase of biodiversity in an area

Answer 4

ecotourism
-money from tourists can support conservation
-example of conservation project e.g. planting trees, maintain footpaths

Question 5

outline the processes of coppicing

Answer 5

• trunk cut close to ground level
  -several new shoots grow from cut surface
  -protect young shoots from grazers
  -process repeated after a certain
  -broadleaves species
  -rotational coppicing
  -can be repeated indefinitely

Question 6

benefits of coppicing

Answer 6

-new stems grow more rapidly than saplings
-lifespan of tree extended
-provides variety of light levels
-fewer large trees means more light for smaller plants
-provides a variety of habitats
-roots prevent soil erosion
-maintains soil quality
-prevents sucession
-large machinery not needed

Question 7

what are the advantages of vegetative propagation in agriculture

Answer 7

-some crop plants cannot reproduce sexually
-young seedlings less likely to survive
-quicker than growing from seed/ sexual reproduction
-uniform/ predictable shape/ size/ quality/ yield
-easier to harvest
-propagation can be done at any time of the year