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Day 1 C.W : 27/7/15
Nature walk task: showed the plants to the children
Discussion on herbs shrubs and trees.
Day 1 H.W: 27/7/15
Activity Task: Visit to a nearby garden observe the plants and complete the columns in table
7.1 given in textbook with 2 or 3 other examples of plants.
[Time: 20 minutes
MI: Logical,Verbal ,kinaesthetic
RBT: understanding]
Differentiation task: Differentiate between trees , shrubs and herbs and write the difference of 3
points in your NB 1:
[Time: 12 minutes
MI: Logical ,writing
Application]
Day 2 C.W: 28/7/15
Difference between: Herbs, shrubs, trees
Herbs:
Shrubs:
Trees:
Creepers:
Climbers:
RBT:
Functions of the stem include:
1. Providing protection for the upper portions of the plant (those which normally
carry the reproductive organs).
2. Protects the vascular system of the plant from environmental (weather),
mechanical, insect or animal damage. In part the vascular system provides the
stem with rigidity.
3. Contributes to the increase in surface area for photosynthesis, branches hold
the leaves further away from the stem (where light levels can be lower), exposing
more leaf area to the sun.
4. Stems also elevate the leaf canopy away from other plants which may be
competing for the same sunlight (such as in dense jungles).
5. Transports water and minerals from roots to the leaves and prepared food to
the roots and other plant parts.
The stem gives support and structure for the plant. The stem houses the xylem
and phloem which transports water and nutrients from the root to other parts of
the plant. It also protects from the leaves.
Angiosperms are a group of flowering plants that represent a major community in the plant kingdom.
Angiosperms occur in all typical habits and constitute a very useful group of plants for animals and
human beings. They include about 2,50,000 species distributed all over the world. They are the most
highly evolved group of plants and appeared on Earth about 130 million years ago.
The adult plant body of angiosperms is a sporophyte. It is differentiated clearly into two regions. The
ascending portion of the plant body is called as shoot system and the descending portion is called as
root system.
fig. 27.1 - Adult Plant Body of an Angiosperm
The shoot system has an axis that is called stem which is differentiated into nodes and internodes. At
the nodes, lateral appendages called leaves arise. The leaves are green in colour. Also seen at the
nodes are structures called branches and flowers. The branches also produce leaves and flowers.
Flowers are the reproductive structures. The tip of the stem usually has a terminal bud which brings
about linear growth. In the axil of the leaf (at the angle between a leaf and the stem), there is an
axillary bud which brings about the formation of a branch or an inflorescence or a flower.
There are two kinds of functional structures in an angiosperm plant body, namely, the vegetative parts
and the reproductive parts. The root, stem, branches and leaves represent the vegetative parts while
flowers represent the reproductive part.
Day 2 H.W: 28/7/15
video showing different parts of plant.
https://youtu.be/OxQka2Bai7M
Visual Task: video showing different parts of plant.
https://youtu.be/OxQka2Bai7M
[Time: 5 minutes
MI: Visual
RBT: Understanding]
Follow up task and Drawing task: Based on the video seen earlier Draw the plant (diagram
given below) in NB 1 on the blank page and label all the parts correctly.
Different Plant Parts
[Time: 15 minutes
MI: Logical, kinaesthetic
Writing task: write following question in NB 1:
1. What are the functions of stem?
RBT: Application]
Ans. - The stem gives support and structure for the plant.
- The stem contains the xylem and phloem which transports water and nutrients from the
root to other parts of the plant.
- Transports water and minerals from roots to the leaves and prepared food to the roots and
other plant parts.
- Providing protection for the upper portions of the plant like flower and also protects leaves.
[Time: 5 minutes
MI :Logical
Day 3 C.W: 29/7/15
Discussion on different parts of plants
Discussion on functions of stem.
Day 4 H.W: 30/7/15
Drawing task: Draw the diagram of the leaf given and label it .
RBT: understanding ]
Time :10 minute
MI:Kinesthetic,
RBT: Application
Textual task: Read the section 7.3 and write the answers to the questionsQ.1 Write the meaning of the terms:
a) petiole- It is the narrow stalk that connects the leaf to the stem. some plants like rice and wheat do
not have a petiole.
b) lamina-The broad expanded green portion of the leaf is called leaf blade or lamina.
c) veins- Smaller veins grow on either side of the midrib ansd veins divide further to form a network of
veinlet. The veins provide support to the lamina and transport water, raw materials and food made in
the lamina.
d) midrib –The lamina has a thick vein called the midrib, in the centre of the leaf.
Day 5 C.W: 31/7/15
1. Demonstrate that stem carry the water from roots to the leaves using
coloured water, and a weed . Show video on conduction of water and
minerals and discuss following questions –(Video on https://www.youtube.com/watch?v=bvPM6sfidY4)
-How does the water gets up to the stem?
-What do we call the structures through which the conduction of water
takes place?
https://youtu.be/bvPM6sfidY4
Activity task 2: Study different types of venations in different leaves.
Time :12 minute
MI:Verbal
RBT: Application
the venation is the characteristic
arrangement of veins in a leaf.
There are lots of different types of leaf venation that are important for plant identification.
The term venation refers to how veins are distributed in the leaf blade,
Usually lamina compriseanastomotic veins that are veins ending in a closed point (e.g.
terminating or fused in a leaf apex) while "non"-anastomotic veins which endings are free
are quite infrequent.
There are two principal types of venation: parallel-veined and reticulated-veined:
The veins on monocots are almost parallel to the margins of the leaf
whereas in dicots radiate from a central primary midvein that gives
rise to secondary or lateral veins and in turn tertiary veins and veinlets
PARALLEL-VEINED-LEAVES: In parallel-veined
leaves, numerous veins run essentially parallel to each
other and are connected laterally by .straight veinlets.
The most common type of parallel veining is found in
plants of the grass family, whose veins run from the
leaf's base to its apex. Another type of parallel venation
is found in plants such as banana, calla, and
pickerelweed, whose veins run laterally from
the midrib.
RETICULASTED-VEINED-LEAVES: In reticulate-veined leaves (also called netveined), veins branchfrom the main rib or ribs and subdivide into finer veinlets.
These veinlets then unite in a complicated network. This system of enmeshed veins makes
the leaf more resistant to tearing than does a parallel vein structure. Net-veined leaves occur
on dicotyledonous plants.
Net venation may be either pinnate or palmate. In pinnate venation, the veins extend
laterally from the midrib to the edge . In palmate venation, the principal veins extend
outward, like the ribs of a fan, from the base of the leaf blade .
Some different venation patterns of dicots leaves are illustrated below: