An eminent Indian embryologist is ______.

(a)

S.R.Kashyap

(b)

P.Maheswari

(c)

M.S. Swaminathan

(d)

K.C.Mehta

Size of pollen grain in Myosotis ______.

(a)

10 micrometer

(b)

20 micrometer

(c)

200 micrometer

(d)

2000 micrometer

Assertion(A) : Sporopollenin preserves pollen in fossil deposits
Reason (R): Sporopollenin is resistant to physical and biological decomposition

(a)

assertion is true; reason is false

(b)

assertion is false; reason is true

(c)

Both Assertion and reason are not true

(d)

Both Assertion and reason are true.

Choose the correct statement(s) about tenuinucellate ovule.

(a)

Sporogenous cell is hypodermal

(b)

Ovules have fairly large nucellus

(c)

sporogenous cell is epidermal

(d)

ovules have single layer of nucellus tissue

Which of the following represent megagametophyte?

(a)

Ovule

(b)

Embryosac

(c)

Nucellus

(d)

Endosperm

The unit of reproductive structure used in vegetative propagation is called as __________________

(a)

Diplospores

(b)

Aplanospores

(c)

Diaspores

(d)

Conidiospores

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

The genetic ability of a plant cell to produce the entire plant is said to be ________________

(a)

Multipotency

(b)

Totipotency

(c)

Pleuripotency

(d)

Differentiation

A typical anther is ________________

(a)

Bisporangiate

(b)

Tetrasporangiate

(c)

Unisporangiate

(d)

Multisporangiate

Innermost layer of anther wall is ________________

(a)

Endothecium

(b)

Endothecum

(c)

Endothelium

(d)

Tapetum

Corm

(1)

Pistia stratiotes

Offset

(2)

Elongated funiculus surrounds ovule

Hemianatropous

(3)

body of ovule is at right angles to funiculus

Circinotropus

(4)

Colocasia

Campylotropous

(5)

hilum, micropyle and chalaza of ovule lie adjacent to one another

A detached leaf of Bryophyllum produces new plants. How?

“Tissue culture is the best method for propagating rare and endangered plant species”- Discuss.

Point out the advantages of natural vegetative reproduction

Mention any two conventional propagation techniques

What do you mean by terms 'stock' and 'scion' in grafting technique?

Why does the zygote divides only after the division of Primary endosperm cell.

What is Mellitophily?

“Endothecium is associated with dehiscence of anther” Justify the statement

How tongue grafting differs from wedge grafting?

List any three advantages of micropropagation

What is endosperm. Explain the types.

Write about the different types of ovules.