STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
MORPHOLOGY OF FLOWERING PLANTS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Pore is hilum while the scar is micropyle.
|
|
|
Pore is micropyle while the scar is hilum.
|
|
|
Pore is micropyle while the scar is funicle
|
|
|
Pore is hilum and scar is funicle.
|
Detailed explanation-1: -The micropyle is a small opening that is found in the ovule, just close to the hilum and is retained in the seed after fertilisation. When soaked, seeds absorb water mainly through the micropyle. Micropyle also helps in respiration and in the exchange of gases.
Detailed explanation-2: -The micropyle is the small opening present at the tip where the integument does not cover the nucellus in the ovule of the seed. Pollen tube enters the ovule through a micropyle during fertilization. It is present as a small pore above the hilum in the seed. It absorbs water and helps in seed germination.
Detailed explanation-3: -Hilum. The seed coat is the outer protective covering of the seed. The hilum is the scar on the seed coat through which seeds are attached to the fruit.
Detailed explanation-4: -The hilum of a liberated seed is a small scar marking its former place of attachment. The short ridge (raphe) that sometimes leads away from the hilum is formed by the fusion of seed stalk and testa. In many seeds, the micropyle of the ovule also persists as a small opening in the seed coat.