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1. a. explain the causes of variations in the physical factors of the environment measured despite

the proximity of forest and grassland

One of the main causes of variation in physcial factors of forest and grassland istheir location. The forest areas observed are more elevated compared to grassland. Also,

in forest, there are great number of tress that hinder the sunrays to penetrate compared to

grassland that is exposed. The presence of trees also affects the humidity, temperature of the surrounding which can further affect the soil, and other organims present in the

environment

B. how the variation in the microenvironment influence the different organismDifferent microenvironments promote growths of also different organims. The

variation of microenvironment triggers varyingeffect in organism. This demands more

capablitiy to adapt with the factors of the environment, since it influences the survival

rate of orgnisms

c. Discuss the role of human activities in the formation of grassland

umans often develop an open area, this isolates the area from human activities

that hinders the growth of grasses. !ome also promotes the idea of having national par"s that encourages to replant shurbs herbs and the li"e.

d. !Ome organisms prefer forest, because their source of food and shelter may only be found

in the forest. #t means that the forest environment is more suitable for them. The same applies for 

other organisms that prefer grassland. On the other hand, there are some organisms that can be

found in both sites. This implies that these organisms can adapt and survive in eitherenvironment. They can find resources and mate in either of the environments.

$odular % lichens

&nitary found in forest % bear 

$odular % desmodiumunitary found in grassland % pronghorn

$odular % $usa

&nitary found in both % ants

'. $odular organism hae no predetermined characteristics. They grow through time and itdepends on the nutrients they in%ta"e, the surroundings that surround them. Thus, modular

organism are greatly affected by environmental factors compared to unitary organism that has a

more defined body plan.

(. )iches of ants %*ertili+ing the oil % they mostly live in soil, thus when they briing food to their shelter,

they help in nourishing the soil.

increasing plant diversity % since plants live in forest, the seeds of other plants which

they considered foot can be transported from one place to another, thus increasing the

8/18/2019 Guide Questions 1' bio 150

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chances of plant diversity

$a"ing a hole for water transportation in soil % they dig holes in the soil since they live

underground-, at the same time they create a path for water to penetrate the soil

Distubances applied

o"ing the nest % po"ing the nest forces the the ants to go out from their shelter, butthey/re not organi+ed compared to normal circumstances. They do not follow a straight path.

Destroying the line of path when they/re loo"ing for food % they change direction, but

after few seconds they go bac" to the original path!tomping the nest % their reaction was slow, but after few minutes, the go out of their

nest in an unorgani+ed manner.

*ood responsesTuna is the food that attracted the most ants followed by powdered energy drin" and

 powdered instant coffee. This means that ants are mostly attracted by food which have an

evident sweet smell.

0. lants that are sun%loving have thic"er leave and have a well developed palisade layer. Theyalso have broader leaves. This is because they need to obtain more light in order to perform

 photosynthesis to produce their own food . On the other hand, shade plants have thinner leaves

and a poor palisade layer.

. #n sun loving plants 2ylingia and Alternathera-, the changes when placed in shady area is due

to the low supply of solar energy that allows it to produce food. These plants changed their color

from green to light green and this can be due to low chlorophyll production. The leaves also become thinner and some of it were folded. The flower of 2ylinga became dry, it is because the

 plant no longer has the strenght to maintain its original form. $eanwhile, in shade%tolerated

 plants, abscission was obserserved. This can be due to the exposure to high light intensity inwhich the plant is not used to. The leaf angle also become smaller, this is due to lessen the

surface area of the leaf exposed to sun.