Plants are an essential part of the ecosystem. Every life on the earth is directly or indirectly dependent on plants. Among the different parts of a plant, the leaf is the most essential.
Plants are an essential part of the ecosystem. Every life on the earth is directly or indirectly dependent on plants. Among the different parts of a plant, the leaf is the most essential.
There are two different types of leaves – simples leaves and compound leaves. The other types of leaves include acicular, linear, lanceolate, orbicular, elliptical, oblique, centric cordate, etc. They perform the function of photosynthesis and help in the removal of excess water from the aerial parts of the plant.
Learn the concept of adaptation.
Types of plants adaptation.
1. Terrestrial
2. Aquatic
Learn the different types of land adaptation and aquatic adaptations.
See different examples and beautiful pictures.
This ppt explains the different adaptations of plants and the types based on the habitat. This also explains two types of plants - terrestrial plants and aquatic plants along with the adaptations of plants to live in a particular habitat.
There are two different types of leaves – simples leaves and compound leaves. The other types of leaves include acicular, linear, lanceolate, orbicular, elliptical, oblique, centric cordate, etc. They perform the function of photosynthesis and help in the removal of excess water from the aerial parts of the plant.
Learn the concept of adaptation.
Types of plants adaptation.
1. Terrestrial
2. Aquatic
Learn the different types of land adaptation and aquatic adaptations.
See different examples and beautiful pictures.
This ppt explains the different adaptations of plants and the types based on the habitat. This also explains two types of plants - terrestrial plants and aquatic plants along with the adaptations of plants to live in a particular habitat.
Introduces the elementary student to some more of the basic aspects of the geography and climate of the Coniferous forests and to plant and animal adaptions needed to survive there.
Landscape design is the art of arranging or modifying the features of a yard, an urban area, etc., for aesthetic or practical reasons. For organizational purposes, it is often divided into two major parts: hardscape and softscape.
In depth description of the Moon/s phases and why they are as they are. Uses some great internet animations of various situations explaining why we see what we see from Earth. Also discusses the tides and why they are caused by the moon's gravity.
Basic presentation of the parts of a plant and of the life cycle of plants. Pitched at about the 2nd, 3rd or 4th grade level. Lots of descriptive pictures and diagrams.
Soil science for teachers (massive-the real dirt on soil)Moira Whitehouse
A very large Slide Show on soil. Useful for anyone without formal earth science training who might need to bone up or teach any aspect of soil. It's huge, 159 slides. It could also be split up into several lessons for students.
Short lesson on the different kind of birds feet and why they need to be as they are. Appropriate for 1st, 2nd, or 3rd grade students. There is a short work sheet at the end of the slideshow that may be printed for student use.
For classroom teaching of the various forms of energy at about the early middle school level. Lots of animations. Would like some feedback if it downloads and plays ok.
4. Deciduous trees have
broadleaves. Broad leaves
have large surfaces so
they can gather a lot of
sunlight.
However, a tree with
flat, wide leaves also
loses a lot of water
through transpiration
where water
evaporates from the
surface of the leaf.
7. And most drop their
leaves in winter or
during long periods
without rain.
8. A tree drops its leaves when it is cold or dry in order
to save energy. It takes a lot of energy for a tree to
keep wide broad green and healthy.
Deciduous forest during winter
9. Deciduous trees have flowers and reproduce from
seeds.
A few have
brightly
colored
flowers in the
spring but
most do not.
Most have male and female flowers that are dull
and green, the same color as the tree so we do not
even notice them.
10. These male flowers from a
red oak are long, skinny
and green. They hang
downward from new
branches in spring
producing pollen.
When they fall off, the
male flowers sometime
look like big green worms
on the ground.
Female flowers form later than male flowers and are
not visible to the naked eye.
11. When pollen from the male flower fertilizes the
female flower, seeds develop. The seeds on a
deciduous tree usually grow inside its fruit or in a
hard shell for protection like
these acorns on a red oak tree.
12. The seeds are often dispersed when the fruits or nuts
are eaten by animals. Since the seeds inside the fruit
or shell are not digestible, the animal eventually
passes them through its droppings often away from
the parent tree. This increases the chance for a
seedling to grow in an area that is not shadowed by
its parent.
15. Coniferous trees grow up instead of out like a
deciduous tree and are shaped like a triangle. The
leaves are usually long, pointy needles.
Spruce Fir Pine
16. The cones of the conifers are very important to the
coniferous tree because it is there that the tree
makes and shelters its seeds.
Cones are made up of many scales that serve to
protect the seeds.
17. Female cone Most coniferous trees
have both male and
female cones. Female
cones contain eggs.
Male cones are small
and soft. They produce
(make) pollen. Once
the pollen is
released, male cones
shrivel and die.
When the egg is
pollinated a seed
Male cone
develops
18. When it's time, the
Pine cone with seeds. scales of the cone open
and the seeds fall to the
ground.
19. Coniferous trees with their long
needle like leaves thrive where
summers are short and cool and
winters long and harsh, with
heavy snowfall that can last as
long as 6 months.
20. These needles are pretty
amazing adaptations. It
is their long thin shape
and wax covering that
slows down evaporation
so the tree doesn't lose
much water. It is this
adaptation that allows
trees with needles to
grow in areas where it is
cold most of the year
and where there is little
precipitation.
21. Conifer trees do lose their
leaves but only a few at a
time and these are quickly
replaced. Since they
generally live in colder
areas of the world, they
always have some leaves
so as soon as it warms up
and the sun shines, they
can make food.
23. This presentation may help you
understand why forests of deciduous
and conifer trees are found in particular
regions where the climate suits their
leaves (or vice versa).