Sexual Reproduction in Flowering Plants
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Flower Structure
SubtopicFlower Structure under Sexual Reproduction in Flowering Plants for Grade 12 CBSE.
Preview questions (no answers)
- 1.
In which part of the flower are the ovules located?
A.Stigma
B.Ovary
C.Style
D.Filament
- 2.
A typical flower consists of four whorls arranged on the swollen end of the stalk called the:
A.Pedicel
B.Petiole
C.Thalamus
D.Stipule
- 3.
The proximal end of the filament of a stamen is typically attached to the:
A.Anther
B.Connective
C.Pollen sac
D.Thalamus or petal
Download the worksheet for Sexual Reproduction in Flowering Plants - Flower Structure to practice offline. It includes additional chapter-level practice questions.
Pre-fertilization: Structures and Events
SubtopicPre-fertilization: Structures and Events under Sexual Reproduction in Flowering Plants for Grade 12 CBSE.
Preview questions (no answers)
- 1.
The filiform apparatus, which plays an important role in guiding the pollen tube into the embryo sac, is a specialized cellular thickening found in the:
A.Antipodal cells
B.Egg cell
C.Synergids
D.Central cell
- 2.
A typical mature angiosperm embryo sac (female gametophyte) is characterized by which of the following nuclear and cellular configurations?
A.8-nucleate, 7-celled
B.7-nucleate, 8-celled
C.8-nucleate, 8-celled
D.7-nucleate, 7-celled
- 3.
The process of formation of microspores from a pollen mother cell () through meiosis is known as:
A.Megasporogenesis
B.Microsporogenesis
C.Triple fusion
D.Emasculation
Download the worksheet for Sexual Reproduction in Flowering Plants - Pre-fertilization: Structures and Events to practice offline. It includes additional chapter-level practice questions.
Pollination and Pollen-Pistil Interaction
SubtopicPollination and Pollen-Pistil Interaction under Sexual Reproduction in Flowering Plants for Grade 12 CBSE.
Preview questions (no answers)
- 1.
What are the primary floral rewards provided by flowers to animal pollinators to ensure repeat visits?
A.Nectar and Pollen grains
B.Fragrance and Bright color
C.Edible petals and Sepals
D.Stigma exudates and Mucilage
- 2.
The pollen tube usually enters the embryo sac through which of the following structures?
A.Chalaza
B.Micropyle
C.Integument
D.Funicle
- 3.
In which of the following plants does pollination occur through the agency of water (Hydrophily)?
A.Vallisneria
B.Water Hyacinth
C.Lotus
D.Water Lily
Download the worksheet for Sexual Reproduction in Flowering Plants - Pollination and Pollen-Pistil Interaction to practice offline. It includes additional chapter-level practice questions.
Double Fertilization
SubtopicDouble Fertilization under Sexual Reproduction in Flowering Plants for Grade 12 CBSE.
Preview questions (no answers)
- 1.
Through which part of the embryo sac does the pollen tube usually enter to release its two male gametes?
A.Through the antipodal cells
B.Directly into the central cell
C.From the chalazal end
D.Into the cytoplasm of one of the synergids
- 2.
How many haploid nuclei are involved in the specific process known as 'Triple Fusion'?
A.Two
B.Three
C.Four
D.Five
- 3.
Double fertilization is a unique reproductive event found exclusively in which of the following groups of plants?
A.Bryophytes
B.Pteridophytes
C.Angiosperms
D.Gymnosperms
Download the worksheet for Sexual Reproduction in Flowering Plants - Double Fertilization to practice offline. It includes additional chapter-level practice questions.
Post-fertilization: Development of Endosperm and Embryo
SubtopicPost-fertilization: Development of Endosperm and Embryo under Sexual Reproduction in Flowering Plants for Grade 12 CBSE.
Preview questions (no answers)
- 1.
In a coconut, the 'coconut water' represents which type of endosperm development?
A.Cellular endosperm
B.Helobial endosperm
C.Free-nuclear endosperm
D.Ruminate endosperm
- 2.
The cylindrical portion of the embryonal axis below the level of cotyledons that terminates at the radicle is known as:
A.Epicotyl
B.Hypocotyl
C.Coleorhiza
D.Scutellum
- 3.
What is the typical ploidy level of the endosperm in most flowering plants?
A.Haploid ()
B.Diploid ()
C.Triploid ()
D.Tetraploid ()
Download the worksheet for Sexual Reproduction in Flowering Plants - Post-fertilization: Development of Endosperm and Embryo to practice offline. It includes additional chapter-level practice questions.
Development of Seed and Formation of Fruit
SubtopicDevelopment of Seed and Formation of Fruit under Sexual Reproduction in Flowering Plants for Grade 12 CBSE.
Preview questions (no answers)
- 1.
Which of these is an example of a 'False Fruit' where the thalamus contributes to the fruit formation along with the ovary?
A.Mango
B.Pea
C.Banana
D.Apple
- 2.
Seeds that retain a portion of the endosperm because it is not completely consumed during embryo development are categorized as:
A.Non-albuminous seeds
B.Ex-albuminous seeds
C.Albuminous seeds
D.Parthenocarpic seeds
- 3.
Which of the following floral parts usually develops into the fruit after fertilization?
A.Style
B.Ovary
C.Stigma
D.Ovule
Download the worksheet for Sexual Reproduction in Flowering Plants - Development of Seed and Formation of Fruit to practice offline. It includes additional chapter-level practice questions.
Apomixis and Polyembryony
SubtopicApomixis and Polyembryony under Sexual Reproduction in Flowering Plants for Grade 12 CBSE.
Preview questions (no answers)
- 1.
In which of the following plant families is apomixis most commonly observed?
A.Asteraceae and Poaceae
B.Solanaceae and Fabaceae
C.Brassicaceae and Liliaceae
D.Malvaceae and Cucurbitaceae
- 2.
Apomixis is a type of reproduction that mimics sexual reproduction but is actually:
A.Sexual reproduction
B.Vegetative propagation only
C.Parasexual reproduction
D.Asexual reproduction
- 3.
Which of the following is a common phenomenon where a seed contains more than one embryo?
A.Apospory
B.Polyembryony
C.Apogamy
D.Parthenogenesis
Download the worksheet for Sexual Reproduction in Flowering Plants - Apomixis and Polyembryony to practice offline. It includes additional chapter-level practice questions.