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WorksheetsGrade 4 Science Plants
Total questions: 89
Worksheet time: 4hrs 30mins
Parts of plants that also known as primary organs are...
roots
trunk/stems
leaves
flower
Parts of plants that also known as secondary organs are...
roots
fruits
leaves
flower
seeds
Characteristics of root are..
Roots are usually underground (although in some plants can be
found above the ground)
Roots are usually green in color
Root’s tips grow continuously, pointed in shape to easily grow deeper into the soil
as the place where photosynthesis occurs
Function of root are...
support and strengthen the plant so it can firmly stand on the soil
absorb water and minerals from the soil, and transport them to the stems
as the place where guttation takes place
as the part of the plant that will grow into new plants.
Type of roots that consists of a primary root along with its branches (lateral roots) and smaller roots or fibers.
Tap Roots
Fibrous Roots
Specialized Roots
Type of roots that have large numbers of thin branching roots growing from the stem of a plant, with similar sizes.
Tap Roots
Fibrous Roots
Specialized Roots
Types of roots that can be modified to adapt with the needs and their environment.
Tap Roots
Fibrous Roots
Specialized Roots
These roots grow from the upper parts of tree branches and hang in the air. The function of these roots is to absorb water vapor and gases from the air.
Hanging Roots
Pneumatophores
Clinging Roots
Stilt Roots
Example of hanging roots..
Banyan Tree
mangrove tree
betel, pothos, and parasitic plants.
Pandanus
An aerial roots which grow out from the soil upward. This type of root functions as the respiratory organ of the
plant.
Pneumatophores
Hanging Roots
Clinging Roots
Stilt Roots
These roots grow from the lower part of the stem in all direction. The roots look as if they are supporting the stem from falling and usually found in plants growing in swamps or soils which lack of oxygen.
Pneumatophores
Hanging Roots
Clinging Roots
Stilt Roots
Example of tap roots..
dandelion
water hyacinth
bayan tree
mangrove tree
Two types of vessel...
Xylem
Phloem
Stem
Cambium
Type of vessel that transports water and minerals from roots to leaves (one-way flow).
xylem
phloem
cambium
stem
Type of vessel that transports the products of photosynthesis (glucose) from leaves to other parts of the plant (two-way flow).
xylem
phloem
cambium
stem
no 1 is...
(a)
no 2 is...
(a)
When we peel off the bark of a mango tree, we will see a smooth slimy layer. This layer is called ...
(a)
no 1 is..
vascular cambium
xylem
bark
phloem
no 2 is..
vascular cambium
xylem
bark
phloem
no 3 is..
vascular cambium
xylem
bark
phloem
no 4 is..
vascular cambium
xylem
bark
phloem
Characteristics of Stem are..
Stems are usually round and long like cylinders.
Stems have nodes and internodes. Nodes are points of attachment for leaves, while internodes are sections between nodes.
Stems usually grow upwards towards the source of light (Phototropic).
They grow from the tips.
Stems are usually colourfull
The correct functions of stem are...
carry water and minerals from the roots to the leaves, fruits
and flowers
carry food from the leaves to the other parts of the plant
attach leaves, flowers, and fruits
store food
as reproductive organs
Types of stem are..
Woody Stems
Herbaceous Stems
Grass Stems
Clinging Stems
Tilt Stems
This type of stems can be used as material for buildings and
furniture. They are hard, stiff and usually found in trees and shrubs.
Woody Stems
Herbaceous stems
Grass stems
These stems are soft, watery and can be cut easily. They are usually short and does not have cambium.
Woody Stems
Herbaceous stems
Grass stems
These stems are non-woody with internodes. They are hollow inside and usually short.
Woody Stems
Herbaceous stems
Grass stems
Mango, teak and guava are examples of ...
Woody Stems
Herbaceous stems
Grass stems
Banana, spinach, and water spinach are examples of ...
Woody Stems
Herbaceous stems
Grass stems
Rice, corn, and other plants from the grass family are examples of ...
Woody Stems
Herbaceous stems
Grass stems
No. 1 is...
leaf stalk
midrib
blade
vein
No. 2 is...
leaf stalk
midrib
blade
vein
No. 3 is...
leaf stalk
midrib
blade
vein
No. 4 is...
leaf stalk
midrib
blade
vein
The correct characteristic of leaves...
usually the part of the plant that is flat like sheets in shape
usually green in color
face the sunlight
consist of cambium
The correct functions of leaves are...
as the place where photosynthesis occurs
as the respiratory organ of the plant
as the place where transpiration occurs
as the place where guttation takes place
to absorb water
Based on the arrangement of the veins, leaves are classified into...
Pinnate leaves
Ovate leaves
Palmate leaves
Parallel leaves
Compound leaves
Based on the number of blades, leaves are classified into...
Pinnate leaves
Ovate leaves
Simple leaves
Parallel leaves
Compound leaves
Leaves that has an arrangement of veins which resembles the fins of a fish called ....
Pinnate leaves
Ovate leaves
Palmate leaves
Parallel leaves
The picture above are example of ...
Pinnate leaves
Ovate leaves
Palmate leaves
Parallel leaves
Leaves that has an arrangement of veins that takes oval shapes with tapering points where the ends meet called ....
Pinnate leaves
Ovate leaves
Palmate leaves
Parallel leaves
The picture above are example of ...
Pinnate leaves
Ovate leaves
Palmate leaves
Parallel leaves
Palm-shaped leaves with lobes stemming from the leaf base, like fingers is characteristics of....
Pinnate leaves
Ovate leaves
Palmate leaves
Parallel leaves
The picture above are example of ...
Pinnate leaves
Ovate leaves
Palmate leaves
Parallel leaves
The leaf vein runs in straight parallel lines across the length of the leaf
Pinnate leaves
Ovate leaves
Palmate leaves
Parallel leaves
Rice, grass, and sugar cane are example of ...
Pinnate leaves
Ovate leaves
Palmate leaves
Parallel leaves
Leaf that has a single leaf blade on each leaf stalk called ...
(a)
Examples of simple leaves are...
mango leaves
banana leaves
mimosa
rose
Example of compound leaves are...
mango leaves
banana leaves
mimosa
rose
no. 1 is...
(a)
no. 2 is...
(a)
no. 3 is...
(a)
no. 4 is...
(a)
no. 5 is...
(a)
no. 7 is...
(a)
no. 8 is...
(a)
no. 9 is...
(a)
Example of plants that are able to reproduce without flower is...
adiantum
ferns
moss
hibiscus
Part of flower with a variety of attractive colours called...
(a)
Part of flower shaped like leaves. It protects the petal when it has budded and not bloomed yet. It called..
(a)
Male reproductive organ, made up of two parts; anther and filament. It called..
(a)
Female reproductive organ, made up of three parts; stigma, style, ovary. It called..
(a)
Types of flowers based on the availability of reproductive parts or organs...
Perfect Flowers
Imperfect Flowers
Complete Flowers
Incomplete Flowers
Types of flowers based on the completeness of the parts...
Perfect Flowers
Imperfect Flowers
Complete Flowers
Incomplete Flowers
Perfect flowers are..
flowers that have both the pistil and stamen in one flower.
flowers that have either the pistil or stamen in one flower but not both.
flowers with all the parts of a flower, especially the sepal, petal, and the reproductive organs (stamen and pistil).
flowers which may not have the sepal, petal, or the reproductive organs.
Imperfect flowers are..
flowers that have both the pistil and stamen in one flower.
flowers that have either the pistil or stamen in one flower but not both.
flowers with all the parts of a flower, especially the sepal, petal, and the reproductive organs (stamen and pistil).
flowers which may not have the sepal, petal, or the reproductive organs.
Complete flowers are..
flowers that have both the pistil and stamen in one flower.
flowers that have either the pistil or stamen in one flower but not both.
flowers with all the parts of a flower, especially the sepal, petal, and the reproductive organs (stamen and pistil).
flowers which may not have the sepal, petal, or the reproductive organs.
Incomplete flowers are..
flowers that have both the pistil and stamen in one flower.
flowers that have either the pistil or stamen in one flower but not both.
flowers with all the parts of a flower, especially the sepal, petal, and the reproductive organs (stamen and pistil).
flowers which may not have the sepal, petal, or the reproductive organs.
hibiscus, jasmines, roses, and orchids
perfect flowers
imperfect flowers
complete flowers
incomplete flowers
corn, gnetum, flower, snake fruit, palm, and coconut
perfect flowers
imperfect flowers
complete flowers
incomplete flowers
tomato, roses, and orchids
perfect flowers
imperfect flowers
complete flowers
incomplete flowers
coconut, plumeria, and corn.
perfect flowers
imperfect flowers
complete flowers
incomplete flowers
no. 1 is...
(a)
no. 2 is...
(a)
no. 3 is...
(a)
no. 4 is...
(a)
no. 5 is...
(a)
no. 6 is...
(a)
Part of the plant that developed from mature ovaries. They cover and protect the seeds.
fruits
seeds
flowers
trunks
Part of the plant that will grow into new plants. They are protected by the flesh of the fruit.
fruits
seeds
flowers
trunks
no. 1 is...
(a)
no. 2 is...
(a)
no. 3 is...
(a)
Part of the seeds that protects the seed
seed coat
embryo
cotyledon
Part of the seeds that will germinate and develop into roots, steems and leaves.
seed coat
embryo
cotyledon
Part of the seeds that provides food for the new plant, before the roots grow.
seed coat
embryo
cotyledon
The example of one seed-leaf plants (monocotyledon) are...
corn
rice
mangoes
rambutans
The example of two seed-leaf plants (dicotyledon) are...
corn
rice
mangoes
rambutans
