Plant Life
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Structure and Functions of a Leaf
SubtopicStructure and Functions of a Leaf under Plant Life for Grade 6 ICSE.
Preview questions (no answers)
- 1.
Which pigment is missing in the non-green parts of a variegated leaf?
A.Chlorophyll
B.Hemoglobin
C.Anthocyanin
D.Xanthophyll
- 2.
What happens to the rate of transpiration when the temperature increases?
A.It decreases
B.It increases
C.It remains the same
D.It stops completely
- 3.
The process of photosynthesis takes place mainly in the:
A.Roots
B.Stem
C.Leaves
D.Flowers
- 4.
Which of these is an example of opposite phyllotaxy?
A.Hibiscus
B.Guava
C.Peepal
D.Neem
- 5.
In the structural organization of a compound leaf as shown in the diagram, what is the name of the central axis labeled 'B' to which the leaflets are attached?
A.Petiole
B.Rachis
C.Midrib
D.Stipule
- 6.
Which plant shows a leaf modification where the petiole becomes green and leaf-like to perform photosynthesis?
A.Australian Acacia
B.Clematis
C.Smilax
D.Gloriosa
- 7.
During respiration in leaves, which gas is taken in from the atmosphere?
A.Oxygen
B.Carbon dioxide
C.Nitrogen
D.Hydrogen
- 8.
During an experiment to show that light is necessary for photosynthesis, a part of a leaf is covered with a black paper strip. After testing with iodine, the covered part:
A.Turns blue-black
B.Turns reddish-brown
C.Does not turn blue-black
D.Becomes transparent
- 9.
In the leaf of Calophyllum, a dicot plant, the venation is interestingly:
A.Parallel
B.Reticulate
C.Whorled
D.Sessile
- 10.
What is the significance of the 'Midrib' in a leaf?
A.It is the site where most photosynthesis occurs
B.It is the extension of the petiole into the lamina that contains vascular tissues
C.It is the part that attaches the leaf to the stem
D.It only functions to provide color to the leaf
Download the worksheet for Plant Life - Structure and Functions of a Leaf to practice offline. It includes additional chapter-level practice questions.
Venation and Modifications of Leaves
SubtopicVenation and Modifications of Leaves under Plant Life for Grade 6 ICSE.
Preview questions (no answers)
- 1.
Which of these is a modification of the leaf for vegetative propagation (growing new plants)?
A.Cactus spines
B.Onion scales
C.Bryophyllum leaf buds
D.Pea tendrils
- 2.
The tip of the leaf blade is called the:
A.Leaf base
B.Leaf margin
C.Leaf apex
D.Petiole
- 3.
What part of the leaf is the petiole?
A.The flat green part
B.The stalk of the leaf
C.The tip of the leaf
D.The veins of the leaf
- 4.
Which of the following is true about reticulate venation?
A.It is found in wheat
B.Veins run side-by-side
C.Veins form a net-like structure
D.It is characteristic of monocots
- 5.
Which of these is NOT a function of leaf modification?
A.Support for climbing
B.Storage of food
C.Increasing the rate of transpiration
D.Trapping insects for nutrients
- 6.
Identify the modification where the leaf is modified into a structure to trap small aquatic insects.
A.Leaf Tendril
B.Leaf Spine
C.Leaf Bladder
D.Scale Leaf
- 7.
When the veins are irregularly distributed to form a meshwork, the venation is called:
A.Reticulate
B.Parallel
C.Lateral
D.Alternate
- 8.
In the insectivorous , what is the fate of the insect once it is trapped by the tentacles?
A.It is crushed by the mechanical force of the leaf
B.It is drowned in the water stored in the leaf base
C.It is digested by enzymes and its nitrogen is absorbed by the leaf
D.It is kept alive to provide CO2 to the plant
- 9.
The relationship between leaf venation and the number of cotyledons in a seed is a key botanical principle. Which of the following follows this principle?
A.Parallel venation - Two cotyledons
B.Reticulate venation - One cotyledon
C.Parallel venation - One cotyledon
D.No relationship exists
- 10.
Which of the following plants has leaves modified into spines, but the plant is not a cactus?
A.Opuntia
B.Argemone (Prickly Poppy)
C.Hibiscus
D.Banyan
Download the worksheet for Plant Life - Venation and Modifications of Leaves to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
A flower that contains both the male and female reproductive parts is called:
A.Unisexual
B.Bisexual
C.Staminate
D.Pistillate
- 2.
Which of these parts is typically absent in a staminate flower?
A.Anther
B.Filament
C.Stamen
D.Carpel
- 3.
After fertilization, the wall of the ovary often develops into the:
A.Seed coat
B.Fruit wall
C.Leaf
D.Stem
- 4.
The individual units of the calyx are called:
A.Stamens
B.Sepals
C.Petals
D.Ovules
- 5.
Which of the following parts is NOT a portion of the pistil?
A.Stigma
B.Style
C.Filament
D.Ovary
- 6.
How many whorls are present in a typical complete flower?
A.Two
B.Three
C.Four
D.Five
- 7.
Which part of the flower is specifically known as the male reproductive organ?
A.Pistil
B.Stamen
C.Carpel
D.Sepal
- 8.
In many plants, the petals have bright colors. Which pigment is primarily responsible for the red and blue colors in petals?
A.Chlorophyll
B.Anthocyanin
C.Carotene
D.Xanthophyll
- 9.
What structure is found inside the ovary and contains the female gamete (egg)?
A.Pollen grain
B.Ovule
C.Stigma
D.Style
- 10.
Which whorl is usually green and performs photosynthesis during the early stages of flower development?
A.Corolla
B.Androecium
C.Calyx
D.Gynoecium
Download the worksheet for Plant Life - Parts of a Flower to practice offline. It includes additional chapter-level practice questions.
Pollination and Fertilization
SubtopicPollination and Fertilization under Plant Life for Grade 6 ICSE.
Preview questions (no answers)
- 1.
A flower that has only the gynoecium is called a:
A.Staminate flower
B.Pistillate flower
C.Bisexual flower
D.Complete flower
- 2.
Which of these is a characteristic of insect-pollinated flowers?
A.They are very small and green
B.They have long, feathery stigmas
C.They produce a sweet scent
D.They have no nectar
- 3.
Which part of the flower protects the reproductive organs when the flower is in the bud stage?
A.Petals
B.Anthers
C.Sepals
D.Stigma
- 4.
How many male nuclei are typically involved in the fertilization of one egg cell?
A.One
B.Two
C.Three
D.Four
- 5.
In a flowering plant, where is the male gamete located before pollination?
A.Inside the ovule
B.Inside the pollen grain
C.Inside the stigma
D.Inside the ovary
- 6.
Which of the following is a characteristic of water-pollinated flowers?
A.Large bright petals
B.Strong sweet scent
C.Pollen grains often have a mucilaginous covering
D.Abundant nectar production
- 7.
What is the role of the 'Style' in the fertilization process?
A.To produce the egg cell
B.To provide a path for the pollen tube to reach the ovary
C.To attract insects with its color
D.To develop into the seed coat
- 8.
In the context of the carpel, what is the role of the 'Style'?
A.To produce and store the ovules
B.To receive the pollen grains from the air
C.To provide a path for the pollen tube to reach the ovary
D.To protect the flower during the bud stage
- 9.
Which of the following statements about 'Self-pollination' is TRUE?
A.It always requires an external agent like wind or insects
B.It leads to a significant increase in genetic diversity
C.It can occur even when the flower is in the bud stage
D.It only happens in unisexual flowers
- 10.
What happens to the 'Antipodal cells' found in the embryo sac after fertilization occurs?
A.They grow to become the embryo
B.They usually degenerate and disappear
C.They form the endosperm
D.They develop into the seed coat
Download the worksheet for Plant Life - Pollination and Fertilization to practice offline. It includes additional chapter-level practice questions.