Sexual Reproduction in Flowering Plants Test

Result

Sexual Reproduction in Flowering Plants Test - 27

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Among the terms listed below, those that of are not technically correct names for a floral whorl are

i. Androecium

ii. Carpel

iii. Corolla

iv. Sepal

A
i and iv,

B
iii and iv

C
ii and iv

D
i and ii.

Solution

Carpel and sepal are individual parts and make gynoecium and calyx respectively.
Question 2
1 / -0

Embryo sac is to ovule as _______ is to an anther.

A
Stamen

B
Filament

C
Pollen grain

D
Androecium

Solution

A typical carpel consists of ovary which can have many ovules. Each ovule has an embryo sac, which in turn has a single egg cell. Similarly, in majority of angiosperms each stamen consists of a bilobed anther, which in turn has two pollen sacs in each lobe, consisting of pollen grains.
Question 3
1 / -0

In a typical complete, bisexual and hypogynous flower the arrangement of floral whorls on the thalamus from the outermost to the innermost is:

A
Calyx, corolla, androecium and gynoecium

B
Calyx, corolla, gynoecium and androecium

C
Gynoecium, androecium, corolla and calyx

D
Androecium, gynoecium, corolla and calyx

Solution

Calyx, corolla, androecium and gynoecium
Question 4
1 / -0

A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is:

A
Plant is dioecious and bears only pistillate flowers

B
Plant is dioecious and bears both pistillate and staminate flowers

C
Plant is monoecious

D
Plant is dioecious and bears only staminate flowers.

Solution

Fruits can develop from a single ovary of a single flower(simple fruit) or from several free carpels of a single flower (aggregate) or form whole inflorescence(multiple). In total, fruits develop from ovaries. This is why, a dioecious plant (unisexual) bearing only staminate (male) flowers will not produce fruits, whereas monoecious plants (bisexual) or dioecious plants bearing only pistillate (female) lowers or pistillate and staminate both can bear fruits. So, the correct answer is 'Plant is dioecious and bears only staminate flowers'.
Question 5
1 / -0

The outermost and innermost wall layers of microsporangium in an anther are respectively:

A
Endothecium and tapetum

B
Epidermis and endodermis

C
Epidermis and middle layer

D
Epidermis and tapetum

Solution

Epidermis and tapetum
Question 6
1 / -0

During microsporogenesis, meiosis occurs in:

A
Endothecium

B
Microspore mother cells

C
Microspore tetrads

D
Pollen grains.

Solution

Microspore mother cell undergoes meiosis to produce haploid pollen grains.
Question 7
1 / -0

From among the sets of terms given below, identify those that are associated with the gynoecium.

A
Stigma, ovule, embryo sac, placenta

B
Thalamus, pistil, style, ovule

C
Ovule, ovary, embryo sac, tapetum

D
Ovule, stamen, ovary, embryo sac

Solution

Stigma is a part of pistil on which pollen grain lands. Each ovary may have many ovules, which have embryo sacs in them. Placenta is a tissue/ridge inside ovary to which ovules are attached.

Thalamus is the terminal part of the axis of flower which bears all floral appendages. Tapetum is the innermost layer of microsporangium while stamen is part of androecium.
Question 8
1 / -0

Starting from the innermost part, the correct sequence of parts in an ovule are,

A
egg, nucellus, embryo sac, integument

B
egg, embryo sac, nucellus, integument

C
embryo sac, nucellus, integument, egg

D
egg, integument, embryo sac, nucellus.

Solution

Egg cell is inside the embryo sac in the ovule. The embryo sac is further enclosed by the parenchymatous tissue, nucellus, which provides nutrition to developing embryo. Nucellus is ultimately surrounded by integuments.
Question 9
1 / -0

From the statements given below choose the option that are true for a typical female gametophyte of a flowering plant:

i. It is 8-nucleate and 7-celled at maturity

ii. It is free-nuclear during the development

iii. It is situated inside the integument but outside the nucellus

iv. It has an egg apparatus situated at the chalazal end

A
i and iv

B
ii and iii

C
i and ii

D
ii and iv

Solution

A typical female gametophyte of a flowering plant is 8-nucleate and 7-celled at maturity and free-nuclear during the development.
Question 10
1 / -0

Autogamy can occur in a chasmogamous flower if:

A
Pollen matures before maturity of ovule

B
Ovules mature before maturity of pollen

C
Both pollen and ovules mature simultaneously

D
Both anther and stigma are of equal lengths.

Solution

Relative lengths of stigma and anther are not the only factors, time of maturity of pollens and ovules is also important in deciding the type of pollination. If pollens mature before ovules; they will become ineffective by the time the ovule matures.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Sexual Reproduction in Flowering Plants Test - 27

Result

Sexual Reproduction in Flowering Plants Test - 27

Score

-

Rank

-

SHARING IS CARING

Question 1

i and iv,

iii and iv

ii and iv

i and ii.

Solution

Question 2

Stamen

Filament

Pollen grain

Androecium

Solution

Question 3

Calyx, corolla, androecium and gynoecium

Calyx, corolla, gynoecium and androecium

Gynoecium, androecium, corolla and calyx

Androecium, gynoecium, corolla and calyx

Solution

Question 4

Plant is dioecious and bears only pistillate flowers

Plant is dioecious and bears both pistillate and staminate flowers

Plant is monoecious

Plant is dioecious and bears only staminate flowers.

Solution

Question 5

Endothecium and tapetum

Epidermis and endodermis

Epidermis and middle layer

Epidermis and tapetum

Solution

Question 6

Endothecium

Microspore mother cells

Microspore tetrads

Pollen grains.

Solution

Question 7

Stigma, ovule, embryo sac, placenta

Thalamus, pistil, style, ovule

Ovule, ovary, embryo sac, tapetum

Ovule, stamen, ovary, embryo sac

Solution

Question 8

egg, nucellus, embryo sac, integument

egg, embryo sac, nucellus, integument

embryo sac, nucellus, integument, egg

egg, integument, embryo sac, nucellus.

Solution

Question 9

i and iv

ii and iii

i and ii

ii and iv

Solution

Question 10

Pollen matures before maturity of ovule

Ovules mature before maturity of pollen

Both pollen and ovules mature simultaneously

Both anther and stigma are of equal lengths.

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.