Chapter 4 Flashcards
Biology
What part of the plant absorbs water?
root hair cells
What are the adaptations of root hair cells?
large surface area, thin cell wall
What part of the plant transports water and minerals?
xylem/xylem vessels
What is transpiration?
the evaporation of extra water from the leaves
What is the definition of transpirational pull?
more water is drawn up to replace the water that is lost/evaporated
What do plants need water?
- support the plant
- transport substances
- cools the plant
- supports photosynthesis
Is excretion a metabolic process?
No
What is the function of the kidney?
to regulate water content and filter the blood
What are the benefits of eating a healthy diet during pregnancy?
- good brain development
- reduce risk of birth defects
- reduce risk of anemia
State 3 nutrients that are good for a pregnant woman to consume.
carbohydrates, protein, iron, Vitamin C, Fibre, Calcium, Phosphorus and folic acid
State 3 effects of smoking to a pregnant woman.
- low birth weight/premature babies
- birth defects
- Sudden Infant Death Syndrome(SIDS)
- Withdrawal syndromes in newborns
- Respiratory Problems
How does nicotine affect the fetus?
It narrows the blood vessels and decreases the amount of oxygen the fetus receives.
How does carbon monoxide affect the fetus?
It prevents the red blood cells from binding with oxygen.
What liquid is excreted from the body?
urine
Which organ produces urea?
liver
