Plant Nutrition Flashcards
What are the functions of carbohydrate in made from phtosynthesis
starch as an energy store
cellulose to build cell walls
glucose used in respiration to provide energy
sucrose for transport in the phloem
nectar to attract insects for pollination
Difference between chlorophyll and chloroplast
Chlorophyll: Chlorophyll is a green pigment that is responsible for capturing light energy during photosynthesis. It is a molecule, specifically a pigment, that can be found within the chloroplasts.
Chloroplast: Chloroplasts are cellular organelles that house a chlorophyll and play a central role in photosynthesis. They are membrane-bound structures within plant and algal cells.
Why is there more chloroplast in Palisade mesophyll cell than spongy mesophyll cell
The palisade mesophyll cells contain more chloroplasts than spongy mesophyll cells in plant leaves because of their distinct roles and positions within the leaf, which are optimized for efficient photosynthesis.
Explain the Strucuture of xylem vessels and their adaptations
Function: transport tissue for water and
dissolved mineral ions.
Adaptations:
Cells joined end to end with no cross
walls to form a long continuous tube.
Cells are essentially dead, without cell
contents, to allow free passage of
water.
Outer walls are thickened with a
substance called lignin, strengthening
the tubes, which helps support the plant
Explain the Structure and function of root hair celll
What is Transpiration?
Transpiration is the loss of
water vapour from a plant.
Most of this loss takes place
from the leaves.
What is Translocation
The transport of sucrose
and amino acids in the
phloem, from regions of
production to regions of
storage or use, is
called translocation.
difference between source and sink
Areas where amino aicds and sucrose are produced are called sources.
Regions where they are stored or used for respiration and growth are called sinks
