With reference to the formation of fruits and seeds, consider the following statements: 1. The fruit is the ripened ovary. 2. The seed develops from the stigma. 3. The seed coat develops from the zygote. Which of the statements given above is/are correct?

Correct Option The correct option is (a). Explanation In angiosperms (flowering plants), the process of double fertilization triggers significant post-fertilization changes. These changes involve the transformation of specific floral parts into structures that constitute the fruit and the seed. Statement-wise Analysis - Statement 1 is Correct: After fertilization, the ovary of the flower develops into the fruit. The wall of the ovary transforms into the fruit wall, known as the pericarp. Therefore, a fruit is technically defined as a ripened ovary. - Statement 2 is Incorrect: The seed develops from the ovule, not the stigma. The stigma is the part of the pistil where pollen grains land and germinate. After fertilization, the stigma, style, and stamens typically wither and fall off. - Statement 3 is Incorrect: The seed coat develops from the integuments (protective coverings) of the ovule. The zygote develops into the embryo, which is the precursor to the new plant contained within the seed. Key Takeaway Post-Fertilization Transformations: - Ovary → Fruit - Ovule → Seed - Integuments → Seed Coat - Zygote → Embryo - Primary Endosperm Nucleus (PEN) → Endosperm

With reference to the formation of fruits… - NCERT Class 7 Science MCQ

NCERT Class 7 Science — Chapter 4: Reproduction in plants

mcqmedium

With reference to the formation of fruits and seeds, consider the following statements:

The fruit is the ripened ovary.
The seed develops from the stigma.
The seed coat develops from the zygote.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 7 · Page 6

Options

A1 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (a).

Explanation

In angiosperms (flowering plants), the process of double fertilization triggers significant post-fertilization changes. These changes involve the transformation of specific floral parts into structures that constitute the fruit and the seed.

Statement-wise Analysis

Statement 1 is Correct: After fertilization, the ovary of the flower develops into the fruit. The wall of the ovary transforms into the fruit wall, known as the pericarp. Therefore, a fruit is technically defined as a ripened ovary.
Statement 2 is Incorrect: The seed develops from the ovule, not the stigma. The stigma is the part of the pistil where pollen grains land and germinate. After fertilization, the stigma, style, and stamens typically wither and fall off.
Statement 3 is Incorrect: The seed coat develops from the integuments (protective coverings) of the ovule. The zygote develops into the embryo, which is the precursor to the new plant contained within the seed.

Key Takeaway

Post-Fertilization Transformations:

Ovary → Fruit
Ovule → Seed
Integuments → Seed Coat
Zygote → Embryo
Primary Endosperm Nucleus (PEN) → Endosperm

Your note

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