Biology F5 C1
What does organ means ?
Formed from a combination of several types of tissue that carry out specific functions
One of plants system is
shoot system
Explain importance of organ flower in flowering plants.
-Has male reproductive organ (__)
-Has female reproductive organ (__)
-Produce ____for reproduction
-Produce seeds for ____
-Ensure the ___ of the species
stamen, pistil, gamete, germination, survival
State the name of the cell found in zone of cell division.
Meristematic cell
State the difference in structure between the cell found in zone of cell division(Zone X) with the cell found in zone of cell elongation(Zone Y).
-Cells in zone X have a large ___ while cells in zone Y have a small ___.
-Cells in zone X have a small size of ___ while cells in zone Y have a large size of ___.
-Cells in zone Y is longer & ___ compared to cells in zone X.
nucleus, vacuole
The cells in zone of cell division have an abundance of mitochondria. Explain why.
-To generate more ___
-To carry out __ cell division process / mitosis
energy, active
What is the growth curve of annual plants ?
A sigmoid curve
Examples of annual plants
Corn, pumpkin, sunflower, watermelon
Explain the growth rate of the annual plants at stage A.
-The growth rate in stage A __.
-Stored food in___ is used for germination.
-Green plants has not carried out ___.
decreases, cotyledons, photosynthesis
State 2 ways how the loggers can determine the trees which are mature and suitable to be cut down.
-Measure the ___ of the tree
-Measure the __ of the tree
circumference, height
What type of tissue that plays an important role in the growth of plant ?
Meristematic tissue
Difference of primary growth with secondary growth.
-Involves___meristem
-Occurs at___tip and___tip
-Increase the length of ___ and roots of plants
apical, shoot, root, stems
Difference of secondary growth with primary growth.
-Involves___meristem
-Occurs at___stems and roots
-Increase the___ or___of stem and roots of plant
lateral, matured, thickness, circumference
Explain how plant's age can be determined based on its annual rings.
-In spring, there is enough water supply and sunlight, the ___xylem tissue is bigger and the wall is ___.
-The secondary xylem tissues formed in this season are____ in colour.
-In summer, the formation of secondary xylem is smaller and the wall is ___.
-The xylem tissues that formed are ___ in colour
-One bright or dark ring represent___.
secondary, thinner, brighter, thicker, darker, one year
State the process that occurs at the first stage of annual plant which is decreasing dry mass.
Food storage in the cotyledon is used for germination
Which type of plants can adapt to extreme surroundings ? Explain.
-___ plants
-Have special structures that can regulate____changes and amount of water__
-Most of these plants flower and bear a lot of fruit throughout life
-Experiencing___ growth
-Increase plant survival
perennial, temperature, loss, secondary
Explain the function of primary phloem.
To transport organic substances from leaves to the root.
Explain the secondary growth process that occurs in the roots of eudicot plants.
-Vascular cambium cells actively divide by___ to form cambium___.
-Cells in the cambium ring divide inwards to form secondary___ and divide outwards to form secondary___.
-Primary xylem is pushed towards the ___.
-Primary phloem is pushed towards the___.
-Root diameter___.
-The___cambium actively divides to form cork cells.
ring, xylem, phloem, pith, epidermis, increases, cork
Give an example of a eudicot plant that undergoes secondary growth.
Mangosteen tree