Biology Homework Overview Flashcards
(14 cards)
True or False: Meristems is useless for a plant’s growth
False, because meristems produce unspecialized cells which soon become specialized, and their ability to produce cells that can become new tissues or organs is essential for plant growth.
Flowchart of Meristematic cells
- Meristematic Cell → Dermal Tissue → Epidermal Cell
- Meristematic Cell → Ground Tissue → Cell that carries out photosynthesis OR Cell that has thick, and hard cell wall for support
- Meristematic Cell → Vascular Tissue
What is the difference between Xylem, and Phloem?
Xylem is a tissue that takes care of the materials needed for photosynthesis whereas phloem moves the sugars produced by photosynthesis to other parts of the body
Why do leaves exert a strong pull of water, and in what position should the stomata be in?
Leaves exert a strong pull on water with open pores (stomata), because it facilitates the process of traspiration (evaporation) where water vapour could leave the surface of the leaf
How to demonstrate that the stomata in the underside of the leaves regulate transpiration?
In order to demonstrate that the stomata in the underside of the leaves regulate transpiration, transpiration rates for with, and without stomata could be monitored.
Will a tulip transpire in a dry or moist environment?
A tulip will transpire in a dry environment, because it is easier for the water on the leaves to evaporate, and get absorbed in a dry environment rather than a humid environment where the air is saturated, and moist.
Why when a plant is snapped or bent, the portion of the plant above dies?
This is because the primary vacular tissues which transport water, and nutrients is broken or severed.
Why does sap flow to the leaves during spring?
It is because mainly during spring the new buds are enriched with energy created by the pressure changes within the tree that causes the sap to flow.
Flow chart of maple syrup during spring and summer
Spring:
* Stored starch converted to sucrose → sucrose → glucose → glucose used by new buds to form leaves
Summer and Fall:
* Glucose produced by leaves through photosynthesis forms starch → starch → starch converted to surcose → sucrose → sucrose converted to starch when being stored
Would sap flow be greater in the day or night?
It would be greater in the day than the night, because during the day it is above freezing temperatures, and these temperature fluctuations create a pressure differential within the tree that dries up the sap flow.
What is the significance of villi, and microvilli in the small intestines?
The small intestine’s structure including the villi, and microvilli increases the surface area allowing for efficient nutrient absorption, and digestion.
What does Cystic Fibrosis do?
Prevents digestive enzymes from entering the small intestine which inders digestion for faats, and proteins which can lead to malabsorption of nutrients, and cause potential malnutrition.
What do people mean when they say “Food went down the wrong way”?
They mean that the food or liquid entered the trachea (windpipe) instead of the esophagus.
Why at higher altitudes, how does the respiratory system, and the circulatory system react?
At higher altitudes, the respiratory system struggles to breathe in oxygen to provide to the blood whereas the cirulatory system struggles to distribute the small amount of oxygen to the body’s tissue.
