Select the appropriate options with reference to post fertilisation changes in angiosperms.
A. Inner integument of ovule develops into tegmen.
B. Ovary wall forms pericarp
C. Ovule forms fruit
D. Zygote forms endosperm
E. Outer integument of ovule develops into Testa
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A, B, E only
After double fertilisation, the parts of the flower change: the ovules become seeds and the ovary becomes the fruit.
A. Inner integument of ovule develops into tegmen. — True. The integuments harden into the seed coat. The inner one forms the inner seed coat, the tegmen.
B. Ovary wall forms pericarp — True. The wall of the ovary becomes the wall of the fruit, the pericarp.
C. Ovule forms fruit — False. The ovule forms the seed; the ovary forms the fruit.
D. Zygote forms endosperm — False. The zygote forms the embryo. The endosperm comes from the primary endosperm nucleus, made by triple fusion.
E. Outer integument of ovule develops into Testa — True. The outer integument forms the outer seed coat, the testa.
NCERT Extract:
Seed – “… As ovules mature into seeds, the ovary develops into a fruit, i.e., the transformation of ovules into seeds and ovary into fruit proceeds simultaneously. The wall of the ovary develops into the wall of fruit called pericarp. The fruits may be fleshy as in guava, orange, mango, etc., or may be dry, as in groundnut, and mustard, etc.”