Question

Which of the following statements is correct?
A. The seed in grasses is not endospermic.
B. Mango is a parthenocarpic fruit.
C. A proteinous aleurone layer is present in maize grain.
D. A sterile pistil is called a staminode.

Answer 1

Hint: Endosperm: The endosperm is a tissue inside the seeds of most of the flowering plants after fertilization.
- It surrounds the embryo and provides nutrition in the form of starch.
- It can also contain oils and protein.

Complete answer:
In order to solve this question, we need to discuss the options given.
> Option A: The seed in grasses is not endospermic.
The seed in grasses is endospermic.
Grasses mainly belong to Family Poaceae.
They have albuminous seeds.
So, this option is incorrect.

> Option B: Mango is a parthenocarpic fruit.
Parthenocarpic fruit is a fruit which is developed without fertilization.
They do not have seed.
So, Mango is not a parthenocarpic fruit.

> Option C: A proteinous aleurone layer is present in maize grain.
A proteinaceous aleurone layer is present in maize grain.
In monocotyledons seeds are usually endospermic.
The endosperm is surrounded by one special thick layered cell which is known as aleurone layer.
The layer is usually proteinaceous in nature.
It provides nourishment to the plants.
So, this is the correct option.

> Option D: A sterile pistil is called a staminode.
A sterile pistil is called a pistillode. A sterile stamen is called a staminode.
So, this option is incorrect.

Hence, The correct answer is option (C).

Note: Flower: A flower is the reproductive structure found in flowering plants also known as angiosperms. The flower helps in reproduction by providing a method for the union of sperms with eggs.
Pollination is of two types: self-pollination and cross-pollination.
- Self pollination means when the pollen from the anther is dropped on the stigma of the same flower or can be on another flower on the same plant.
- Cross pollination means transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.