Study Sheet Flashcards
1
Q
Define :
- Tissue
- Organ
- Transpiration
- Diffusion
- Translocation
- Adhesion Forces
- Cohesion Forces
A
- A group of cells that are similar
- A group of tissues that are similar in order to create a specific function (eg. heart)
- The controlled release of water vapor through stomata on the underside of the leaf
- The movement of a liquid, gas or vapor from a high concentration gradient to a low concentration gradient
- The transportation of water, nutrients and food around the plant using xylem and phloem
- The for attracting to dissimilar substances (eg. Water and xylem)
- The attraction of the same substance to itself (eg. Water)
2
Q
Leaf as an Organ: (function, location and Structure)
- Xylem and phloem
- Epidermis
- Mesophyll (palisade and spongy)
- Cuticle
- Stoma
- Guard cells
A
- help in transportation of water, nutrients and dissolved food. Found in vascular bundle (center of stem, vein, root). Tube like, xylem thicker, xylem lignified (dead and woody)
- allow for light to pass through relatively easily, support the leaf diffusion of gases. Under Cuticle (upper), bottom of leaf (lower). 1 cell thick, tightly horizontally packed, same size and often brick shaped.
- (palisade) allow for photosynthesis. Under upper epidermis, Vertically packed, contain chloroplasts. (Spongy) allow for gaseous diffusion. Above lower epidermis. Very open and patchy allowing for gasses to pass.
- Helps in water retention and vapor retention. Above upper epidermis. Waxy and water repellent.
- Help in gaseous diffusion. Found in lower epidermis. Wholes.
- Control the stoma. Found around stoma. Thick inner walls, thin outer walls,large vacuoles.
3
Q
Root as an organ: (structure, location, function)
- Xylem, phloem
- root hair
A
- The same, only surrounded by cortex(cells storing energy in the form of starch)
- Adapted epithelial cells (hair like). Found attached to root and in the soil. Diffusion of water and nutrients by having a high salt concentration in the root hairs and actively transporting nutrients/ salts.
4
Q
Animal tissue: (structure, location, function)
- Blood
- Bone
- Nervous
A
- 4 parts:
>Red - contains hemoglobin, found in blood (plasma), to transport oxygen
>White - has a nucleus, larger than red, found in plasma, kills ‘foreign invaders’ and its own problematic cells
>Plasma - Water based liquid that contains, red, white and platelets. Transports.
> Platelets - made of broken down old cells, found in plasma, main purpose is to clot.
5
Q
- Cartilage
- Epithelium
A
- Chondrocytes sit in lacunae surrounded by jelly like substance called chondrin, found all over the. shock absorbing. Fibrous - increases size of joints, protects tendons. Elastic - contains more collagen
