Team A
components of food
Carbohydrate, proteins, fats, vitamins and minerals
Components of food are called .....
Nutrients
Why are nutrients required by the body? 3 different points
to get energy, to carry out life processes, to repair, to grow
Two modes of Nutrition
Autotrophic and Heterotrophic
Examples of Autotrophs
Green Plants, Algae, certain bacteria
Define Nutrition
Process by which living things
- obtain their food,
-change food into simple substances
- use it to make substances needed by the body
Define Autotrophic nutrition
The mode of nutrition where an organism prepare its OWN food by taking SIMPLE substances
Define Photosynthesis
The process by which GREEN plants and certain organisms UTILISE the energy from sunlight to CONVERT simple molecules such as water and carbon di oxide into CARBOHYDRATE and OXYGEN
It is the only natural process that liberates oxygen to be used by living things
photosynthesis
Photosynthesis changes ________ energy into _______ energy
Light energy into chemical energy
what are stomata?
stomata are tiny pores present on the surface of leaves which helps in exchange of gases
1)____________ are specialized structures within the plant cell which contain a green pigment called _____. 2) This pigment absorbs _________ and uses it to create _________ and _________.
1) Chloroplasts Chlorophyll
2) Light energy carbohydrate and oxygen
Water is transported from roots to leaves through ________ whereas starch is taken to all the parts of the plant through _________.
Xylem and Phloem
The carbohydrate produced as a result of photosynthesis are made up of ______, ________, ____________.
Carbon Hydrogen Oxygen
Plants require __________ for making _________ which comes from nitrogen fixing bacteria in the soil
Nitrogen and Protein
3 Characteristics of parasitic plants
1 cannot make their own food
2 have special root like structure to penetrate into host plants
3 depends on host plant for all (parasitic) or part of (partial parasite) their nutrition.
What are saprophytic plants ?
Plants that get their nutrition from dead and decaying material
How are saprophytes beneficial ?
Some saprophytes (fungi) make soil fertile by breaking down the remains of dead and decaying plats and animals to humus
What are insectivorous plants?
Plants that get their nutrition mostly from small animals such as insects.
what is lichen?
Two organism Algae and fungi functioning as single stable unit.
What are symbiotic plants?
Plants that get all or part of their nutrition by living closely connected to another plant such that it is beneficial to both plants.
Explain how lichen is an example of symbiotic plant
Lichen is algea and fungi living together. Algae provide food and fungi provide water and mineral
Thin , pale yellow or pale green twinning stem that extract water and nutrients from host plant
dodder
Is rhizobium parasitic? why or why not?
Rhizobium convert atmospheric nitrogen to ammonia that can be used by leguminous plants hence benefits them so they are symbiotic plants. In return they take nutrition from the plant.
Is mistletoe parasitic or partial parasitic? why?
Partial parasitic as it is capable of photosynthesising but take water and nutrients from host plant.