The aleurone layer in maize grain is specially rich in
1
Proteins
2
Starch
3
Lipids
4
Auxins
Official Solution
Correct Option: (1)
In monocotyledons the seeds are generally endospermous. The internal structure of grain can be studied in a longitudinal section. It shows two distinct regions upper large region, the endosperm and lower smaller region, the embryo. The endosperm is surrounded by a special one cell thick layer, called aleurone layer. It is filled with aleurone grains which are proteinaceous in nature. Other components of this layer are phytin, carbohydrates and small amounts of phospholipids are also present,
02
PYQ 2012
medium
biologyID: neet-ug-
The coconut water and the edible part of coconut are equivalent to
1
Endosperm
2
Endocarp
3
Mesocarp
4
Embryo
Official Solution
Correct Option: (1)
Coconut fruit is a drupe. It has a membranous epicarp, fibrous mesocarp and stony endocarp. The endocarp encloses a single seed with brown testa that contains a small embryo and a white oily endosperm (edible part) with watery fluid called coconut water.
03
PYQ 2013
medium
biologyID: neet-ug-
During seed germination its stored food is mobilized by
1
Ethylene
2
Cytokinin
3
ABA
4
Gibberellin
Official Solution
Correct Option: (4)
The correct option is (D): Gibberellin.
04
PYQ 2013
medium
biologyID: neet-ug-
Perisperm differs from endosperm in
1
Being a haploid tissue
2
Having no reserve food
3
Being a diploid tissue
4
Its formation by fusion of secondary nucleus with several sperms
Official Solution
Correct Option: (3)
The correct option is (C): Being a diploid tissue.
05
PYQ 2014
medium
biologyID: neet-ug-
Which one of the following statements is correct?
1
Mango is a parthenocarpic fruit
2
A proteinaceous aleurone layer is present in maize grain
3
A sterile pistil is called a staminode
4
The seed in grasses is not endospermic
Official Solution
Correct Option: (2)
The correct option (B): A proteinaceous aleurone layer is present in maize grain.
06
PYQ 2014
medium
biologyID: neet-ug-
Non-albuminous seed is produced in:
1
Castor
2
Wheat
3
Pea
4
Maize
Official Solution
Correct Option: (3)
The correct option (C): Pea
.
07
PYQ 2017
medium
biologyID: neet-ug-
The morphological nature of the edible part of coconut is
1
Perisperm
2
Cotyledon
3
Endosperm
4
Pericarp
Official Solution
Correct Option: (3)
The correct option is (C): Endosperm.
08
PYQ 2019
medium
biologyID: neet-ug-
The given diagram shows different stages of seed germination. Identify , , and and select the correct option.
1
a
2
b
3
c
4
d
Official Solution
Correct Option: (2)
Answer (b) b
09
PYQ 2024
easy
biologyID: neet-ug-
Identify the part of the seed from the given figure which is destined to form root when the seed germinates.
1
A
2
B
3
C
4
D
Official Solution
Correct Option: (3)
In a seed, the part that forms the root during germination is called the radicle, which is located at the base of the embryo. From the given figure, the part labeled C corresponds to the radicle.
Thus, the correct answer is (3) C.
10
PYQ 2025
medium
biologyID: neet-ug-
In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called:
1
Coleorhiza
2
Integument
3
Aleurone layer
4
Coleoptile
Official Solution
Correct Option: (3)
In the seeds of cereals, the aleurone layer is the protein-rich outer covering of the endosperm. This layer is crucial in storing proteins and plays a significant role in seed germination. The aleurone layer is situated just below the seed coat and surrounds the endosperm, which provides nutrients to the embryo during germination. Thus, the correct answer is Aleurone layer.
