Which of the following aquatic plant is popularly known as the "Terror of Bengal"?

(a)

Eichomia crassipes

(b)

Vallisneria spiralis

(c)

Pistia stratiotes

(d)

Zostera marina

A typical anther is ________________

(a)

Bisporangiate

(b)

Tetrasporangiate

(c)

Unisporangiate

(d)

Multisporangiate

Which is not a part of mature seed?

(a)

Funiculus

(b)

Testa and tegma

(c)

hilum

(d)

Chalaza

Statement 1: Primary sporogenous cell functions as megaspore mother cell.
Statement 2: Megaspore mother cell undergoes mitotic division producing megaspores.

(a)

Statement 1 is correct and statement 2 is incorrect.

(b)

Statement 1 is incorrect and statement 2 is correct.

(c)

Both the statements 1 and 2 are correct.

(d)

Both the statements 1 and 2 are incorrect.

Identify the type of ovule, where the nucellus acquires a horse-shoe shaped structure.

(a)

Anatropus

(b)

Hemianatropus

(c)

Campylotropus

(d)

Amphitropus