Botany XII - Sexual Reproduction in Flowering Plants 03

Question : 1

The type of pollination that brings genetically different types of pollen to the stigma shows is
 

Options:

	Transfer of pollen grains from the anther to the stigma of another flower on same plant
	Both genetically as well as ecologically crosspollination
	Transfer of pollen within the same flower
	Functionally cross-pollination but genetically selfpollination

Solution :

(B)

Xenogamy/Allogamy

You scored 0 of 1

Question : 2

(skipped)

The number of abiotic and biotic agents involved in pollination are (respectively)
 

Options:

	One, two
	Two, two
	Two, one
	One, one

Solution :

(3)

Abiotic agents – Wind and water (two)
Biotic agent – Animals (one)

You scored 0 of 1

Question : 3

(skipped)

Which of the following is a mis-matched pair w.r.t. outbreeding devices?
 

Options:

	Presence of male and female    –     Dioecy flowers on different plants
	Pollen grain of one flower          –     Prepotency germinates more rapidly over stigma of another flower as compared to its own flower
	Certain gametes, even from        –    Self -incompatibility genetically similar parents,            do not fuse with each other
	The presence of natural and        –    Dichogamy physical barrier between androecium and gynoecium

Solution :

(D)

Presence of natural or physical
barrier between andoroecium and
gynoecium is known as herkogamy.
• Different maturation time of the two
sexes is known as dichogamy

You scored 0 of 1

Question : 4

(skipped)

Anther matures first in
 

Options:

	Salvia
	Ficus
	Aristolochia
	Magnolia

Solution :

(!)

Protandry occurs in Salvia, rest plants
show protogyny.

You scored 0 of 1

Question : 5

(skipped)

Read the following statements carefully and fill in the blanks with the correct option.
I. When gynoecium matures first it is called as ____A____.
II. Continued self-pollination results in ____B____.
III. Monoecious condition prevents ___C___ but not geitonogamy.
IV. In GSI pollen is rejected in/on ____D____.
 

Options:

	A – Protandry, B – Inbreeding depression
	C – Auotogamy, D – Style
	A – Protogyny, D – Stigma
	B – Heterosis, C – Autogamy

Solution :

(B)

A – Protogyny
B – Inbreeding depression
C – Autogamy
D – Style

You scored 0 of 1

Question : 6

(skipped)

Anemophily is pollination by
 

Options:

	Wind
	Insects
	Water
	Mammals

Solution :

(A)

Anemophily is pollination by wind.

You scored 0 of 1

Question : 7

(skipped)

The pollination by water is limited to
 

Options:

	30 species, mostly monocots
	70 species, mostly dicots
	30 genera, mostly monocots
	60 genera, mostly monocots

Solution :

(C)

Pollination by water is limited to 30
genera, mostly monocots.

You scored 0 of 1

Question : 8

(skipped)

The given plant, w.r.t. type of pollination, shows

          

Options:

	Light and non-sticky pollen grains
	Flowers with well exposed stamens and large, often feathery stigma
	Single ovule in each ovary and numerous flowers packed into an inflorescence
	More than one option is correct

Solution :

(D)

Plant shows anemophily i.e., wind
pollination

You scored 0 of 1

Question : 9

(skipped)

Identify the correctly matched pair.
 

Options:

	Water hyacinth – Hydrophily
	Alisma – Anemophily
	Zostera – Hydrophily
	Potamogeton – Entomophily

Solution :

(C)

Water hyacinth – Pollination by insects
or wind
Alisma – Entomophily
Potamogeton – Anemophily

You scored 0 of 1

Question : 10

(skipped)

The pollination shown below

I. Occurs in Vallisneria
II. Pollen grains are released inside water
III. The female flowers reach the surface of water by the short stalk
 

Options:

	I & II are incorrect
	II & III are incorrect
	I & III are incorrect
	All are correct

Solution :

(B)

Vallisneria
• Dioecious plant
• Pollens are released on the surface
of water.
• Female flowers reach the surface of
water by the long stalk.